HappyRun G100 Pro 48V/33Ah 3000W Fat Tire Electric Bike

Frequently Asked Questions

Does the bike come fully assembled?

The G100 Pro arrives 90% pre-assembled. You'll need to attach the handlebars, front wheel, and pedals—a straightforward process that takes 30-45 minutes. A detailed video guide (accessible via QR code) walks you through every step, and all necessary tools are included.

What's the actual top speed in real-world conditions?

The G100 Pro can reach 50 mph in Class 5 mode on flat terrain with a single rider. Real-world speeds depend on rider weight, terrain, wind conditions, and battery charge level. Heavier riders or uphill riding will reduce top speed slightly. Remember: Class 5 mode is for off-road use only.

How long does the battery really last?

Battery range varies significantly based on riding mode. In Class 1 (13 mph), you can achieve 70-78 miles. In Class 5 (50 mph), expect 30-40 miles. The dual battery system with auto-switching balancer ensures you get maximum range from both batteries. Aggressive acceleration and frequent stops reduce overall range.

Can I use this bike for daily commuting on public roads?

Yes, but you must limit your speed to comply with local e-bike laws. Most areas allow Class 2 (20 mph) or Class 3 (28 mph) e-bikes on public roads. The G100 Pro's multiple speed modes make it easy to stay legal. Always check your local regulations—some jurisdictions may require registration or licensing for high-powered e-bikes.

What safety gear do I need for riding at high speeds?

For speeds above 28 mph, we strongly recommend:

• DOT-approved full-face or modular motorcycle helmet
• Armored riding jacket
• Motorcycle gloves
• Knee and elbow pads
• Sturdy boots with ankle protection
• Eye protection (if not using full-face helmet)

At 50 mph, this bike performs like a motorcycle—dress accordingly.

How do I switch between speed modes?

Press the "S" button on the display to cycle through speed gears 1-5. Each gear corresponds to a different speed class. The LED display clearly shows your current mode. You can also access hidden functions like switching between kilometers/miles and trip/total mileage using button combinations detailed in the manual.

What's the difference between the G100 and G100 Pro?

The G100 Pro features several key upgrades:

• Dual battery system (72V 33Ah vs single battery)
• Auto-switching dual-battery balancer
• Extended range (up to 78 miles vs 50-60 miles)
• Enhanced suspension system
• Improved NFC unlock system
• Sequential turn signals

The Pro is designed for riders who demand maximum range and performance.

Can I ride this bike in the rain or snow?

The G100 Pro has an IP54 waterproof rating, meaning it's protected against splashing water and dust. You can ride in light to moderate rain, but avoid deep puddles, submersion, or pressure washing. The fat tires provide excellent traction in wet conditions and light snow, but exercise caution on slippery surfaces at high speeds.

How much does it cost to charge the battery?

Based on average US electricity rates ($0.13/kWh), a full charge of the 72V 33Ah battery system (approximately 2.4 kWh) costs about $0.31. If you ride 50 miles per charge, that's less than $0.01 per mile—dramatically cheaper than gas-powered vehicles.

What maintenance does the G100 Pro require?

Maintenance is minimal compared to gas motorcycles:

• Check tire pressure weekly
• Inspect brakes monthly
• Clean and lubricate chain every 200-300 miles
• Check all bolts and connections monthly
• Keep battery charged (don't store fully depleted)
• Annual professional inspection recommended

The brushless motor requires virtually no maintenance.

Is the G100 Pro suitable for off-road trail riding?

Absolutely. The full suspension system, fat tires, and powerful motor make the G100 Pro excellent for off-road use. The 170Nm of torque handles steep climbs, and the suspension absorbs trail obstacles. The 20" wheels provide better maneuverability than larger wheels on technical terrain. This is where you can legally use Class 5 mode for maximum performance.

What's the recommended rider height range?

The G100 Pro accommodates riders from 5'3" to 6'5". The seat height is adjustable from 32" to 33", and the handlebar position works well for a wide range of body types. If you're at the extreme ends of this range, we recommend testing the fit carefully or considering alternative models.

Can I add accessories like cargo bags or phone mounts?

Yes! The G100 Pro includes a rear rack (33 lbs capacity) that ships separately. You can add:

• Cargo bags and panniers
• Phone mounts (handlebar or stem)
• Additional lighting
• Mirrors
• Cup holders
• Storage boxes

The sturdy frame and rack system support various accessories for commuting or touring.

How long will the battery last before needing replacement?

The lithium-ion battery system is rated for 800-1000 charge cycles before capacity drops to 80%. With proper care (avoiding extreme temperatures, not storing fully depleted, charging regularly), expect 3-5 years of battery life with regular use. Replacement batteries are available through HappyRun.

What's the warranty coverage?

The G100 Pro includes a manufacturer limited warranty covering defects in materials and workmanship. Warranty details vary by component (frame, motor, battery, electronics). Contact Eco Bikes USA for complete warranty information. Note that warranty may not cover damage from off-road use, modifications, or operation beyond legal speed limits.

HappyRun Electric Bike Warranty Policy

At Eco Bike USA, all HappyRun electric bikes come with comprehensive manufacturer warranty coverage. This warranty protects your investment against defects in materials and workmanship when the bike is used normally according to the manufacturer's guidelines.

Warranty Coverage

The warranty period begins on the date of delivery of your original purchase. Coverage varies by component as outlined below:

Frame & Structure

• Frame: 24 months - Covers natural deformation, open welding, desoldering, and fracture due to manufacturing defects. Does not cover self-modification or collision damage.
• Front Forks & Handlebar: 12 months

Essential Components

6-Month Coverage:

• Crank Chain Plate
• Wheel Hub & Spokes
• Derailleur & Freewheel
• Chain & Bottom Bracket
• Shock Absorber
• Kickstand, Rims, Shifter

3-Month Coverage:

• Pedals, Tires, Saddles
• Fenders, Brakes
• Brake Discs, Brake Rods, Brake Levers

Note: Punctures from sharp objects, collision damage, human-caused damage, and self-modifications are not covered.

Electrical Components

12-Month Coverage:

• Motors, Halls, Bearings
• Controller, Charger, Main Harness
• Battery: Maintains up to 75% of original capacity for up to 300 charging cycles

Covers short circuits, burnouts, and performance failures from manufacturing defects. Does not cover water damage, disconnections, or human error.

6-Month Coverage:

• Display, Speed Control Knob
• Booster, Throttle

3-Month Coverage:

• Headlights, Turn Signal Lights
• Taillights, Keys, Switches

What's NOT Covered

This warranty does not cover:

• Normal wear and tear
• Damage from abuse, neglect, misuse, or accidents
• Stunt riding, ramp jumping, or activities inconsistent with intended use
• Improper battery charging or use of non-HappyRun chargers
• Third-party parts, accessories, or modifications
• Modified or tampered components
• Lost or damaged keys/NFC cards
• Repairs by unauthorized persons
• Stolen bikes

Important: All warranties are void if electrical parts have been repaired or modified by unauthorized personnel.

Filing a Warranty Claim

To file a warranty claim, please contact us at support@ecobikesusa.com with:

1. Proof of purchase
2. Photos or videos of the damaged product
3. Description of the issue

We encourage you to reach out before filing a claim, as many issues have simple fixes that don't require replacement parts.

Note:

• HappyRun will not replace parts without photo or video evidence
• Free replacement parts are provided; installation fees are not covered unless authorized
• Shipping damage claims must be filed within 14 days of delivery
• Scratched accessories during shipping are not eligible for replacement

Warranty Region

This warranty applies only to bikes purchased within the continental United States (lower 48 states). We do not ship warranty parts to Alaska, Hawaii, Puerto Rico, or other U.S. territories.

Questions?

Contact Eco Bike USA at support@ecobikesusa.com for warranty assistance and troubleshooting support.

HappyRun Electric Bike Return & Refund Policy

At Eco Bike USA, we want you to be completely satisfied with your HappyRun electric bike purchase. Please review our return policy carefully before making your purchase.

Order Cancellation

To cancel an order, email us at support@ecobikesusa.com before shipment. Cancellation requests are subject to approval and not guaranteed. If successfully canceled, you'll receive email confirmation within 24 hours. A 4.5% transaction processing fee (retained by the payment processor, not Eco Bike USA) will be deducted from your refund.

After Shipment: Orders cannot be canceled once shipped, but you may refuse the package. A 4.5% transaction processing fee and return shipping costs apply: $150 for adult bikes ($200 for G100 Pro/G300 Pro models) and $40 for kids' bikes. The transaction fee can be waived if you opt for a product exchange instead.

Return Policy

14-Day Return Window

Returns must be initiated within 14 days of delivery. Returns are not accepted after 14 days except for quality issues.

Holiday Exception: Purchases made between November 21st and December 24th can be returned until January 6th of the following year.

Non-Quality Returns

New & Unused Bikes (Within 14 Days):

• Return shipping fee: $150 per bike ($200 for G100 Pro/G300 Pro)
• 4.5% transaction processing fee applies
• No restocking fee

Used Bikes (Within 14 Days):

• Return shipping fee: $150 per bike ($200 for G100 Pro/G300 Pro)
• 20% restocking fee
• 4.5% transaction processing fee
• Bike must be in good condition with odometer reading under 20 miles

Quality Issue Returns

Within 14 Days:

• Full refund with no return shipping or processing fees (for critically damaged items affecting functional use)
• Option to exchange for another e-bike at no additional cost
• Our team will investigate all quality claims; intentional or man-made damage will incur return shipping fees

Critically damaged items are defined as products with main structure deformation affecting normal function.

After 14 Days:

• Return shipping fees may apply depending on circumstances
• Contact support@ecobikesusa.com for evaluation

What's NOT Considered a Quality Issue:

• Minor damage to outer packaging
• Damage to parts or wearing parts after excessive use
• Normal wear and tear from regular use

Accessories & Components

New & Unused (Within 14 Days):

• Full refund available
• Return shipping charges:
  
  $50 for wheels, motors, batteries, trailers
  $15 for all other accessories

Return Requirements

All returns must include:

• Original packaging and shipping box
• All included items (battery, charger, keys, tool set, manual, etc.)
• Products must be free of wear, dirt, and scratches
• Same condition as received

Important: Items returned without prior approval will not be accepted.

How to Start a Return

Contact us at support@ecobikesusa.com with:

• Photos and/or videos as evidence
• Order number and reason for return

If approved, we'll provide a return shipping label. If you arrange your own return shipping (with our approval), you're responsible for safe shipment and successful delivery. Eco Bike USA is not liable for lost return packages or customer-arranged shipping costs.

Refund Processing

Refunds are processed within 10-15 business days after we receive and inspect the returned item. Once confirmed, applicable fees will be deducted and the remaining amount refunded to your original payment method.

If your refund hasn't appeared after 7 days, contact your credit card company or bank, as processing times vary by financial institution.

Important Notes

• This policy applies only to HappyRun bikes purchased through Eco Bike USA
• All fees are subject to the terms outlined above
• Choose carefully and contact our team at support@ecobikesusa.com if you need assistance selecting the right product

Frequently Asked Questions

Does the bike come fully assembled?

The G100 Pro arrives 90% pre-assembled. You'll need to attach the handlebars, front wheel, and pedals—a straightforward process that takes 30-45 minutes. A detailed video guide (accessible via QR code) walks you through every step, and all necessary tools are included.

What's the actual top speed in real-world conditions?

The G100 Pro can reach 50 mph in Class 5 mode on flat terrain with a single rider. Real-world speeds depend on rider weight, terrain, wind conditions, and battery charge level. Heavier riders or uphill riding will reduce top speed slightly. Remember: Class 5 mode is for off-road use only.

How long does the battery really last?

Battery range varies significantly based on riding mode. In Class 1 (13 mph), you can achieve 70-78 miles. In Class 5 (50 mph), expect 30-40 miles. The dual battery system with auto-switching balancer ensures you get maximum range from both batteries. Aggressive acceleration and frequent stops reduce overall range.

Can I use this bike for daily commuting on public roads?

Yes, but you must limit your speed to comply with local e-bike laws. Most areas allow Class 2 (20 mph) or Class 3 (28 mph) e-bikes on public roads. The G100 Pro's multiple speed modes make it easy to stay legal. Always check your local regulations—some jurisdictions may require registration or licensing for high-powered e-bikes.

What safety gear do I need for riding at high speeds?

For speeds above 28 mph, we strongly recommend:

• DOT-approved full-face or modular motorcycle helmet
• Armored riding jacket
• Motorcycle gloves
• Knee and elbow pads
• Sturdy boots with ankle protection
• Eye protection (if not using full-face helmet)

At 50 mph, this bike performs like a motorcycle—dress accordingly.

How do I switch between speed modes?

Press the "S" button on the display to cycle through speed gears 1-5. Each gear corresponds to a different speed class. The LED display clearly shows your current mode. You can also access hidden functions like switching between kilometers/miles and trip/total mileage using button combinations detailed in the manual.

What's the difference between the G100 and G100 Pro?

The G100 Pro features several key upgrades:

• Dual battery system (72V 33Ah vs single battery)
• Auto-switching dual-battery balancer
• Extended range (up to 78 miles vs 50-60 miles)
• Enhanced suspension system
• Improved NFC unlock system
• Sequential turn signals

The Pro is designed for riders who demand maximum range and performance.

Can I ride this bike in the rain or snow?

The G100 Pro has an IP54 waterproof rating, meaning it's protected against splashing water and dust. You can ride in light to moderate rain, but avoid deep puddles, submersion, or pressure washing. The fat tires provide excellent traction in wet conditions and light snow, but exercise caution on slippery surfaces at high speeds.

How much does it cost to charge the battery?

Based on average US electricity rates ($0.13/kWh), a full charge of the 72V 33Ah battery system (approximately 2.4 kWh) costs about $0.31. If you ride 50 miles per charge, that's less than $0.01 per mile—dramatically cheaper than gas-powered vehicles.

What maintenance does the G100 Pro require?

Maintenance is minimal compared to gas motorcycles:

• Check tire pressure weekly
• Inspect brakes monthly
• Clean and lubricate chain every 200-300 miles
• Check all bolts and connections monthly
• Keep battery charged (don't store fully depleted)
• Annual professional inspection recommended

The brushless motor requires virtually no maintenance.

Is the G100 Pro suitable for off-road trail riding?

Absolutely. The full suspension system, fat tires, and powerful motor make the G100 Pro excellent for off-road use. The 170Nm of torque handles steep climbs, and the suspension absorbs trail obstacles. The 20" wheels provide better maneuverability than larger wheels on technical terrain. This is where you can legally use Class 5 mode for maximum performance.

What's the recommended rider height range?

The G100 Pro accommodates riders from 5'3" to 6'5". The seat height is adjustable from 32" to 33", and the handlebar position works well for a wide range of body types. If you're at the extreme ends of this range, we recommend testing the fit carefully or considering alternative models.

Can I add accessories like cargo bags or phone mounts?

Yes! The G100 Pro includes a rear rack (33 lbs capacity) that ships separately. You can add:

• Cargo bags and panniers
• Phone mounts (handlebar or stem)
• Additional lighting
• Mirrors
• Cup holders
• Storage boxes

The sturdy frame and rack system support various accessories for commuting or touring.

How long will the battery last before needing replacement?

The lithium-ion battery system is rated for 800-1000 charge cycles before capacity drops to 80%. With proper care (avoiding extreme temperatures, not storing fully depleted, charging regularly), expect 3-5 years of battery life with regular use. Replacement batteries are available through HappyRun.

What's the warranty coverage?

The G100 Pro includes a manufacturer limited warranty covering defects in materials and workmanship. Warranty details vary by component (frame, motor, battery, electronics). Contact Eco Bikes USA for complete warranty information. Note that warranty may not cover damage from off-road use, modifications, or operation beyond legal speed limits.

HappyRun Electric Bike Warranty Policy

At Eco Bike USA, all HappyRun electric bikes come with comprehensive manufacturer warranty coverage. This warranty protects your investment against defects in materials and workmanship when the bike is used normally according to the manufacturer's guidelines.

Warranty Coverage

The warranty period begins on the date of delivery of your original purchase. Coverage varies by component as outlined below:

Frame & Structure

• Frame: 24 months - Covers natural deformation, open welding, desoldering, and fracture due to manufacturing defects. Does not cover self-modification or collision damage.
• Front Forks & Handlebar: 12 months

Essential Components

6-Month Coverage:

• Crank Chain Plate
• Wheel Hub & Spokes
• Derailleur & Freewheel
• Chain & Bottom Bracket
• Shock Absorber
• Kickstand, Rims, Shifter

3-Month Coverage:

• Pedals, Tires, Saddles
• Fenders, Brakes
• Brake Discs, Brake Rods, Brake Levers

Note: Punctures from sharp objects, collision damage, human-caused damage, and self-modifications are not covered.

Electrical Components

12-Month Coverage:

• Motors, Halls, Bearings
• Controller, Charger, Main Harness
• Battery: Maintains up to 75% of original capacity for up to 300 charging cycles

Covers short circuits, burnouts, and performance failures from manufacturing defects. Does not cover water damage, disconnections, or human error.

6-Month Coverage:

• Display, Speed Control Knob
• Booster, Throttle

3-Month Coverage:

• Headlights, Turn Signal Lights
• Taillights, Keys, Switches

What's NOT Covered

This warranty does not cover:

• Normal wear and tear
• Damage from abuse, neglect, misuse, or accidents
• Stunt riding, ramp jumping, or activities inconsistent with intended use
• Improper battery charging or use of non-HappyRun chargers
• Third-party parts, accessories, or modifications
• Modified or tampered components
• Lost or damaged keys/NFC cards
• Repairs by unauthorized persons
• Stolen bikes

Important: All warranties are void if electrical parts have been repaired or modified by unauthorized personnel.

Filing a Warranty Claim

To file a warranty claim, please contact us at support@ecobikesusa.com with:

1. Proof of purchase
2. Photos or videos of the damaged product
3. Description of the issue

We encourage you to reach out before filing a claim, as many issues have simple fixes that don't require replacement parts.

Note:

• HappyRun will not replace parts without photo or video evidence
• Free replacement parts are provided; installation fees are not covered unless authorized
• Shipping damage claims must be filed within 14 days of delivery
• Scratched accessories during shipping are not eligible for replacement

Warranty Region

This warranty applies only to bikes purchased within the continental United States (lower 48 states). We do not ship warranty parts to Alaska, Hawaii, Puerto Rico, or other U.S. territories.

Questions?

Contact Eco Bike USA at support@ecobikesusa.com for warranty assistance and troubleshooting support.

HappyRun Electric Bike Return & Refund Policy

At Eco Bike USA, we want you to be completely satisfied with your HappyRun electric bike purchase. Please review our return policy carefully before making your purchase.

Order Cancellation

To cancel an order, email us at support@ecobikesusa.com before shipment. Cancellation requests are subject to approval and not guaranteed. If successfully canceled, you'll receive email confirmation within 24 hours. A 4.5% transaction processing fee (retained by the payment processor, not Eco Bike USA) will be deducted from your refund.

After Shipment: Orders cannot be canceled once shipped, but you may refuse the package. A 4.5% transaction processing fee and return shipping costs apply: $150 for adult bikes ($200 for G100 Pro/G300 Pro models) and $40 for kids' bikes. The transaction fee can be waived if you opt for a product exchange instead.

Return Policy

14-Day Return Window

Returns must be initiated within 14 days of delivery. Returns are not accepted after 14 days except for quality issues.

Holiday Exception: Purchases made between November 21st and December 24th can be returned until January 6th of the following year.

Non-Quality Returns

New & Unused Bikes (Within 14 Days):

• Return shipping fee: $150 per bike ($200 for G100 Pro/G300 Pro)
• 4.5% transaction processing fee applies
• No restocking fee

Used Bikes (Within 14 Days):

• Return shipping fee: $150 per bike ($200 for G100 Pro/G300 Pro)
• 20% restocking fee
• 4.5% transaction processing fee
• Bike must be in good condition with odometer reading under 20 miles

Quality Issue Returns

Within 14 Days:

• Full refund with no return shipping or processing fees (for critically damaged items affecting functional use)
• Option to exchange for another e-bike at no additional cost
• Our team will investigate all quality claims; intentional or man-made damage will incur return shipping fees

Critically damaged items are defined as products with main structure deformation affecting normal function.

After 14 Days:

• Return shipping fees may apply depending on circumstances
• Contact support@ecobikesusa.com for evaluation

What's NOT Considered a Quality Issue:

• Minor damage to outer packaging
• Damage to parts or wearing parts after excessive use
• Normal wear and tear from regular use

Accessories & Components

New & Unused (Within 14 Days):

• Full refund available
• Return shipping charges:
  
  $50 for wheels, motors, batteries, trailers
  $15 for all other accessories

Return Requirements

All returns must include:

• Original packaging and shipping box
• All included items (battery, charger, keys, tool set, manual, etc.)
• Products must be free of wear, dirt, and scratches
• Same condition as received

Important: Items returned without prior approval will not be accepted.

How to Start a Return

Contact us at support@ecobikesusa.com with:

• Photos and/or videos as evidence
• Order number and reason for return

If approved, we'll provide a return shipping label. If you arrange your own return shipping (with our approval), you're responsible for safe shipment and successful delivery. Eco Bike USA is not liable for lost return packages or customer-arranged shipping costs.

Refund Processing

Refunds are processed within 10-15 business days after we receive and inspect the returned item. Once confirmed, applicable fees will be deducted and the remaining amount refunded to your original payment method.

If your refund hasn't appeared after 7 days, contact your credit card company or bank, as processing times vary by financial institution.

Important Notes

• This policy applies only to HappyRun bikes purchased through Eco Bike USA
• All fees are subject to the terms outlined above
• Choose carefully and contact our team at support@ecobikesusa.com if you need assistance selecting the right product

Frequently Asked Questions

Does the bike come fully assembled?

The G100 Pro arrives 90% pre-assembled. You'll need to attach the handlebars, front wheel, and pedals—a straightforward process that takes 30-45 minutes. A detailed video guide (accessible via QR code) walks you through every step, and all necessary tools are included.

What's the actual top speed in real-world conditions?

The G100 Pro can reach 50 mph in Class 5 mode on flat terrain with a single rider. Real-world speeds depend on rider weight, terrain, wind conditions, and battery charge level. Heavier riders or uphill riding will reduce top speed slightly. Remember: Class 5 mode is for off-road use only.

How long does the battery really last?

Battery range varies significantly based on riding mode. In Class 1 (13 mph), you can achieve 70-78 miles. In Class 5 (50 mph), expect 30-40 miles. The dual battery system with auto-switching balancer ensures you get maximum range from both batteries. Aggressive acceleration and frequent stops reduce overall range.

Can I use this bike for daily commuting on public roads?

Yes, but you must limit your speed to comply with local e-bike laws. Most areas allow Class 2 (20 mph) or Class 3 (28 mph) e-bikes on public roads. The G100 Pro's multiple speed modes make it easy to stay legal. Always check your local regulations—some jurisdictions may require registration or licensing for high-powered e-bikes.

What safety gear do I need for riding at high speeds?

For speeds above 28 mph, we strongly recommend:

• DOT-approved full-face or modular motorcycle helmet
• Armored riding jacket
• Motorcycle gloves
• Knee and elbow pads
• Sturdy boots with ankle protection
• Eye protection (if not using full-face helmet)

At 50 mph, this bike performs like a motorcycle—dress accordingly.

How do I switch between speed modes?

Press the "S" button on the display to cycle through speed gears 1-5. Each gear corresponds to a different speed class. The LED display clearly shows your current mode. You can also access hidden functions like switching between kilometers/miles and trip/total mileage using button combinations detailed in the manual.

What's the difference between the G100 and G100 Pro?

The G100 Pro features several key upgrades:

• Dual battery system (72V 33Ah vs single battery)
• Auto-switching dual-battery balancer
• Extended range (up to 78 miles vs 50-60 miles)
• Enhanced suspension system
• Improved NFC unlock system
• Sequential turn signals

The Pro is designed for riders who demand maximum range and performance.

Can I ride this bike in the rain or snow?

The G100 Pro has an IP54 waterproof rating, meaning it's protected against splashing water and dust. You can ride in light to moderate rain, but avoid deep puddles, submersion, or pressure washing. The fat tires provide excellent traction in wet conditions and light snow, but exercise caution on slippery surfaces at high speeds.

How much does it cost to charge the battery?

Based on average US electricity rates ($0.13/kWh), a full charge of the 72V 33Ah battery system (approximately 2.4 kWh) costs about $0.31. If you ride 50 miles per charge, that's less than $0.01 per mile—dramatically cheaper than gas-powered vehicles.

What maintenance does the G100 Pro require?

Maintenance is minimal compared to gas motorcycles:

• Check tire pressure weekly
• Inspect brakes monthly
• Clean and lubricate chain every 200-300 miles
• Check all bolts and connections monthly
• Keep battery charged (don't store fully depleted)
• Annual professional inspection recommended

The brushless motor requires virtually no maintenance.

Is the G100 Pro suitable for off-road trail riding?

Absolutely. The full suspension system, fat tires, and powerful motor make the G100 Pro excellent for off-road use. The 170Nm of torque handles steep climbs, and the suspension absorbs trail obstacles. The 20" wheels provide better maneuverability than larger wheels on technical terrain. This is where you can legally use Class 5 mode for maximum performance.

What's the recommended rider height range?

The G100 Pro accommodates riders from 5'3" to 6'5". The seat height is adjustable from 32" to 33", and the handlebar position works well for a wide range of body types. If you're at the extreme ends of this range, we recommend testing the fit carefully or considering alternative models.

Can I add accessories like cargo bags or phone mounts?

Yes! The G100 Pro includes a rear rack (33 lbs capacity) that ships separately. You can add:

• Cargo bags and panniers
• Phone mounts (handlebar or stem)
• Additional lighting
• Mirrors
• Cup holders
• Storage boxes

The sturdy frame and rack system support various accessories for commuting or touring.

How long will the battery last before needing replacement?

The lithium-ion battery system is rated for 800-1000 charge cycles before capacity drops to 80%. With proper care (avoiding extreme temperatures, not storing fully depleted, charging regularly), expect 3-5 years of battery life with regular use. Replacement batteries are available through HappyRun.

What's the warranty coverage?

The G100 Pro includes a manufacturer limited warranty covering defects in materials and workmanship. Warranty details vary by component (frame, motor, battery, electronics). Contact Eco Bikes USA for complete warranty information. Note that warranty may not cover damage from off-road use, modifications, or operation beyond legal speed limits.

HappyRun Electric Bike Warranty Policy

At Eco Bike USA, all HappyRun electric bikes come with comprehensive manufacturer warranty coverage. This warranty protects your investment against defects in materials and workmanship when the bike is used normally according to the manufacturer's guidelines.

Warranty Coverage

The warranty period begins on the date of delivery of your original purchase. Coverage varies by component as outlined below:

Frame & Structure

• Frame: 24 months - Covers natural deformation, open welding, desoldering, and fracture due to manufacturing defects. Does not cover self-modification or collision damage.
• Front Forks & Handlebar: 12 months

Essential Components

6-Month Coverage:

• Crank Chain Plate
• Wheel Hub & Spokes
• Derailleur & Freewheel
• Chain & Bottom Bracket
• Shock Absorber
• Kickstand, Rims, Shifter

3-Month Coverage:

• Pedals, Tires, Saddles
• Fenders, Brakes
• Brake Discs, Brake Rods, Brake Levers

Note: Punctures from sharp objects, collision damage, human-caused damage, and self-modifications are not covered.

Electrical Components

12-Month Coverage:

• Motors, Halls, Bearings
• Controller, Charger, Main Harness
• Battery: Maintains up to 75% of original capacity for up to 300 charging cycles

Covers short circuits, burnouts, and performance failures from manufacturing defects. Does not cover water damage, disconnections, or human error.

6-Month Coverage:

• Display, Speed Control Knob
• Booster, Throttle

3-Month Coverage:

• Headlights, Turn Signal Lights
• Taillights, Keys, Switches

What's NOT Covered

This warranty does not cover:

• Normal wear and tear
• Damage from abuse, neglect, misuse, or accidents
• Stunt riding, ramp jumping, or activities inconsistent with intended use
• Improper battery charging or use of non-HappyRun chargers
• Third-party parts, accessories, or modifications
• Modified or tampered components
• Lost or damaged keys/NFC cards
• Repairs by unauthorized persons
• Stolen bikes

Important: All warranties are void if electrical parts have been repaired or modified by unauthorized personnel.

Filing a Warranty Claim

To file a warranty claim, please contact us at support@ecobikesusa.com with:

1. Proof of purchase
2. Photos or videos of the damaged product
3. Description of the issue

We encourage you to reach out before filing a claim, as many issues have simple fixes that don't require replacement parts.

Note:

• HappyRun will not replace parts without photo or video evidence
• Free replacement parts are provided; installation fees are not covered unless authorized
• Shipping damage claims must be filed within 14 days of delivery
• Scratched accessories during shipping are not eligible for replacement

Warranty Region

This warranty applies only to bikes purchased within the continental United States (lower 48 states). We do not ship warranty parts to Alaska, Hawaii, Puerto Rico, or other U.S. territories.

Questions?

Contact Eco Bike USA at support@ecobikesusa.com for warranty assistance and troubleshooting support.

HappyRun Electric Bike Return & Refund Policy

At Eco Bike USA, we want you to be completely satisfied with your HappyRun electric bike purchase. Please review our return policy carefully before making your purchase.

Order Cancellation

To cancel an order, email us at support@ecobikesusa.com before shipment. Cancellation requests are subject to approval and not guaranteed. If successfully canceled, you'll receive email confirmation within 24 hours. A 4.5% transaction processing fee (retained by the payment processor, not Eco Bike USA) will be deducted from your refund.

After Shipment: Orders cannot be canceled once shipped, but you may refuse the package. A 4.5% transaction processing fee and return shipping costs apply: $150 for adult bikes ($200 for G100 Pro/G300 Pro models) and $40 for kids' bikes. The transaction fee can be waived if you opt for a product exchange instead.

Return Policy

14-Day Return Window

Returns must be initiated within 14 days of delivery. Returns are not accepted after 14 days except for quality issues.

Holiday Exception: Purchases made between November 21st and December 24th can be returned until January 6th of the following year.

Non-Quality Returns

New & Unused Bikes (Within 14 Days):

• Return shipping fee: $150 per bike ($200 for G100 Pro/G300 Pro)
• 4.5% transaction processing fee applies
• No restocking fee

Used Bikes (Within 14 Days):

• Return shipping fee: $150 per bike ($200 for G100 Pro/G300 Pro)
• 20% restocking fee
• 4.5% transaction processing fee
• Bike must be in good condition with odometer reading under 20 miles

Quality Issue Returns

Within 14 Days:

• Full refund with no return shipping or processing fees (for critically damaged items affecting functional use)
• Option to exchange for another e-bike at no additional cost
• Our team will investigate all quality claims; intentional or man-made damage will incur return shipping fees

Critically damaged items are defined as products with main structure deformation affecting normal function.

After 14 Days:

• Return shipping fees may apply depending on circumstances
• Contact support@ecobikesusa.com for evaluation

What's NOT Considered a Quality Issue:

• Minor damage to outer packaging
• Damage to parts or wearing parts after excessive use
• Normal wear and tear from regular use

Accessories & Components

New & Unused (Within 14 Days):

• Full refund available
• Return shipping charges:
  
  $50 for wheels, motors, batteries, trailers
  $15 for all other accessories

Return Requirements

All returns must include:

• Original packaging and shipping box
• All included items (battery, charger, keys, tool set, manual, etc.)
• Products must be free of wear, dirt, and scratches
• Same condition as received

Important: Items returned without prior approval will not be accepted.

How to Start a Return

Contact us at support@ecobikesusa.com with:

• Photos and/or videos as evidence
• Order number and reason for return

If approved, we'll provide a return shipping label. If you arrange your own return shipping (with our approval), you're responsible for safe shipment and successful delivery. Eco Bike USA is not liable for lost return packages or customer-arranged shipping costs.

Refund Processing

Refunds are processed within 10-15 business days after we receive and inspect the returned item. Once confirmed, applicable fees will be deducted and the remaining amount refunded to your original payment method.

If your refund hasn't appeared after 7 days, contact your credit card company or bank, as processing times vary by financial institution.

Important Notes

• This policy applies only to HappyRun bikes purchased through Eco Bike USA
• All fees are subject to the terms outlined above
• Choose carefully and contact our team at support@ecobikesusa.com if you need assistance selecting the right product

Frequently Asked Questions

Does the bike come fully assembled?

The G100 Pro arrives 90% pre-assembled. You'll need to attach the handlebars, front wheel, and pedals—a straightforward process that takes 30-45 minutes. A detailed video guide (accessible via QR code) walks you through every step, and all necessary tools are included.

What's the actual top speed in real-world conditions?

The G100 Pro can reach 50 mph in Class 5 mode on flat terrain with a single rider. Real-world speeds depend on rider weight, terrain, wind conditions, and battery charge level. Heavier riders or uphill riding will reduce top speed slightly. Remember: Class 5 mode is for off-road use only.

How long does the battery really last?

Battery range varies significantly based on riding mode. In Class 1 (13 mph), you can achieve 70-78 miles. In Class 5 (50 mph), expect 30-40 miles. The dual battery system with auto-switching balancer ensures you get maximum range from both batteries. Aggressive acceleration and frequent stops reduce overall range.

Can I use this bike for daily commuting on public roads?

Yes, but you must limit your speed to comply with local e-bike laws. Most areas allow Class 2 (20 mph) or Class 3 (28 mph) e-bikes on public roads. The G100 Pro's multiple speed modes make it easy to stay legal. Always check your local regulations—some jurisdictions may require registration or licensing for high-powered e-bikes.

What safety gear do I need for riding at high speeds?

For speeds above 28 mph, we strongly recommend:

• DOT-approved full-face or modular motorcycle helmet
• Armored riding jacket
• Motorcycle gloves
• Knee and elbow pads
• Sturdy boots with ankle protection
• Eye protection (if not using full-face helmet)

At 50 mph, this bike performs like a motorcycle—dress accordingly.

How do I switch between speed modes?

Press the "S" button on the display to cycle through speed gears 1-5. Each gear corresponds to a different speed class. The LED display clearly shows your current mode. You can also access hidden functions like switching between kilometers/miles and trip/total mileage using button combinations detailed in the manual.

What's the difference between the G100 and G100 Pro?

The G100 Pro features several key upgrades:

• Dual battery system (72V 33Ah vs single battery)
• Auto-switching dual-battery balancer
• Extended range (up to 78 miles vs 50-60 miles)
• Enhanced suspension system
• Improved NFC unlock system
• Sequential turn signals

The Pro is designed for riders who demand maximum range and performance.

Can I ride this bike in the rain or snow?

The G100 Pro has an IP54 waterproof rating, meaning it's protected against splashing water and dust. You can ride in light to moderate rain, but avoid deep puddles, submersion, or pressure washing. The fat tires provide excellent traction in wet conditions and light snow, but exercise caution on slippery surfaces at high speeds.

How much does it cost to charge the battery?

Based on average US electricity rates ($0.13/kWh), a full charge of the 72V 33Ah battery system (approximately 2.4 kWh) costs about $0.31. If you ride 50 miles per charge, that's less than $0.01 per mile—dramatically cheaper than gas-powered vehicles.

What maintenance does the G100 Pro require?

Maintenance is minimal compared to gas motorcycles:

• Check tire pressure weekly
• Inspect brakes monthly
• Clean and lubricate chain every 200-300 miles
• Check all bolts and connections monthly
• Keep battery charged (don't store fully depleted)
• Annual professional inspection recommended

The brushless motor requires virtually no maintenance.

Is the G100 Pro suitable for off-road trail riding?

Absolutely. The full suspension system, fat tires, and powerful motor make the G100 Pro excellent for off-road use. The 170Nm of torque handles steep climbs, and the suspension absorbs trail obstacles. The 20" wheels provide better maneuverability than larger wheels on technical terrain. This is where you can legally use Class 5 mode for maximum performance.

What's the recommended rider height range?

The G100 Pro accommodates riders from 5'3" to 6'5". The seat height is adjustable from 32" to 33", and the handlebar position works well for a wide range of body types. If you're at the extreme ends of this range, we recommend testing the fit carefully or considering alternative models.

Can I add accessories like cargo bags or phone mounts?

Yes! The G100 Pro includes a rear rack (33 lbs capacity) that ships separately. You can add:

• Cargo bags and panniers
• Phone mounts (handlebar or stem)
• Additional lighting
• Mirrors
• Cup holders
• Storage boxes

The sturdy frame and rack system support various accessories for commuting or touring.

How long will the battery last before needing replacement?

The lithium-ion battery system is rated for 800-1000 charge cycles before capacity drops to 80%. With proper care (avoiding extreme temperatures, not storing fully depleted, charging regularly), expect 3-5 years of battery life with regular use. Replacement batteries are available through HappyRun.

What's the warranty coverage?

The G100 Pro includes a manufacturer limited warranty covering defects in materials and workmanship. Warranty details vary by component (frame, motor, battery, electronics). Contact Eco Bikes USA for complete warranty information. Note that warranty may not cover damage from off-road use, modifications, or operation beyond legal speed limits.

HappyRun Electric Bike Warranty Policy

At Eco Bike USA, all HappyRun electric bikes come with comprehensive manufacturer warranty coverage. This warranty protects your investment against defects in materials and workmanship when the bike is used normally according to the manufacturer's guidelines.

Warranty Coverage

The warranty period begins on the date of delivery of your original purchase. Coverage varies by component as outlined below:

Frame & Structure

• Frame: 24 months - Covers natural deformation, open welding, desoldering, and fracture due to manufacturing defects. Does not cover self-modification or collision damage.
• Front Forks & Handlebar: 12 months

Essential Components

6-Month Coverage:

• Crank Chain Plate
• Wheel Hub & Spokes
• Derailleur & Freewheel
• Chain & Bottom Bracket
• Shock Absorber
• Kickstand, Rims, Shifter

3-Month Coverage:

• Pedals, Tires, Saddles
• Fenders, Brakes
• Brake Discs, Brake Rods, Brake Levers

Note: Punctures from sharp objects, collision damage, human-caused damage, and self-modifications are not covered.

Electrical Components

12-Month Coverage:

• Motors, Halls, Bearings
• Controller, Charger, Main Harness
• Battery: Maintains up to 75% of original capacity for up to 300 charging cycles

Covers short circuits, burnouts, and performance failures from manufacturing defects. Does not cover water damage, disconnections, or human error.

6-Month Coverage:

• Display, Speed Control Knob
• Booster, Throttle

3-Month Coverage:

• Headlights, Turn Signal Lights
• Taillights, Keys, Switches

What's NOT Covered

This warranty does not cover:

• Normal wear and tear
• Damage from abuse, neglect, misuse, or accidents
• Stunt riding, ramp jumping, or activities inconsistent with intended use
• Improper battery charging or use of non-HappyRun chargers
• Third-party parts, accessories, or modifications
• Modified or tampered components
• Lost or damaged keys/NFC cards
• Repairs by unauthorized persons
• Stolen bikes

Important: All warranties are void if electrical parts have been repaired or modified by unauthorized personnel.

Filing a Warranty Claim

To file a warranty claim, please contact us at support@ecobikesusa.com with:

1. Proof of purchase
2. Photos or videos of the damaged product
3. Description of the issue

We encourage you to reach out before filing a claim, as many issues have simple fixes that don't require replacement parts.

Note:

• HappyRun will not replace parts without photo or video evidence
• Free replacement parts are provided; installation fees are not covered unless authorized
• Shipping damage claims must be filed within 14 days of delivery
• Scratched accessories during shipping are not eligible for replacement

Warranty Region

This warranty applies only to bikes purchased within the continental United States (lower 48 states). We do not ship warranty parts to Alaska, Hawaii, Puerto Rico, or other U.S. territories.

Questions?

Contact Eco Bike USA at support@ecobikesusa.com for warranty assistance and troubleshooting support.

HappyRun Electric Bike Return & Refund Policy

At Eco Bike USA, we want you to be completely satisfied with your HappyRun electric bike purchase. Please review our return policy carefully before making your purchase.

Order Cancellation

To cancel an order, email us at support@ecobikesusa.com before shipment. Cancellation requests are subject to approval and not guaranteed. If successfully canceled, you'll receive email confirmation within 24 hours. A 4.5% transaction processing fee (retained by the payment processor, not Eco Bike USA) will be deducted from your refund.

After Shipment: Orders cannot be canceled once shipped, but you may refuse the package. A 4.5% transaction processing fee and return shipping costs apply: $150 for adult bikes ($200 for G100 Pro/G300 Pro models) and $40 for kids' bikes. The transaction fee can be waived if you opt for a product exchange instead.

Return Policy

14-Day Return Window

Returns must be initiated within 14 days of delivery. Returns are not accepted after 14 days except for quality issues.

Holiday Exception: Purchases made between November 21st and December 24th can be returned until January 6th of the following year.

Non-Quality Returns

New & Unused Bikes (Within 14 Days):

• Return shipping fee: $150 per bike ($200 for G100 Pro/G300 Pro)
• 4.5% transaction processing fee applies
• No restocking fee

Used Bikes (Within 14 Days):

• Return shipping fee: $150 per bike ($200 for G100 Pro/G300 Pro)
• 20% restocking fee
• 4.5% transaction processing fee
• Bike must be in good condition with odometer reading under 20 miles

Quality Issue Returns

Within 14 Days:

• Full refund with no return shipping or processing fees (for critically damaged items affecting functional use)
• Option to exchange for another e-bike at no additional cost
• Our team will investigate all quality claims; intentional or man-made damage will incur return shipping fees

Critically damaged items are defined as products with main structure deformation affecting normal function.

After 14 Days:

• Return shipping fees may apply depending on circumstances
• Contact support@ecobikesusa.com for evaluation

What's NOT Considered a Quality Issue:

• Minor damage to outer packaging
• Damage to parts or wearing parts after excessive use
• Normal wear and tear from regular use

Accessories & Components

New & Unused (Within 14 Days):

• Full refund available
• Return shipping charges:
  
  $50 for wheels, motors, batteries, trailers
  $15 for all other accessories

Return Requirements

All returns must include:

• Original packaging and shipping box
• All included items (battery, charger, keys, tool set, manual, etc.)
• Products must be free of wear, dirt, and scratches
• Same condition as received

Important: Items returned without prior approval will not be accepted.

How to Start a Return

Contact us at support@ecobikesusa.com with:

• Photos and/or videos as evidence
• Order number and reason for return

If approved, we'll provide a return shipping label. If you arrange your own return shipping (with our approval), you're responsible for safe shipment and successful delivery. Eco Bike USA is not liable for lost return packages or customer-arranged shipping costs.

Refund Processing

Refunds are processed within 10-15 business days after we receive and inspect the returned item. Once confirmed, applicable fees will be deducted and the remaining amount refunded to your original payment method.

If your refund hasn't appeared after 7 days, contact your credit card company or bank, as processing times vary by financial institution.

Important Notes

• This policy applies only to HappyRun bikes purchased through Eco Bike USA
• All fees are subject to the terms outlined above
• Choose carefully and contact our team at support@ecobikesusa.com if you need assistance selecting the right product

Frequently Asked Questions

Does the bike come fully assembled?

The G100 Pro arrives 90% pre-assembled. You'll need to attach the handlebars, front wheel, and pedals—a straightforward process that takes 30-45 minutes. A detailed video guide (accessible via QR code) walks you through every step, and all necessary tools are included.

What's the actual top speed in real-world conditions?

The G100 Pro can reach 50 mph in Class 5 mode on flat terrain with a single rider. Real-world speeds depend on rider weight, terrain, wind conditions, and battery charge level. Heavier riders or uphill riding will reduce top speed slightly. Remember: Class 5 mode is for off-road use only.

How long does the battery really last?

Battery range varies significantly based on riding mode. In Class 1 (13 mph), you can achieve 70-78 miles. In Class 5 (50 mph), expect 30-40 miles. The dual battery system with auto-switching balancer ensures you get maximum range from both batteries. Aggressive acceleration and frequent stops reduce overall range.

Can I use this bike for daily commuting on public roads?

Yes, but you must limit your speed to comply with local e-bike laws. Most areas allow Class 2 (20 mph) or Class 3 (28 mph) e-bikes on public roads. The G100 Pro's multiple speed modes make it easy to stay legal. Always check your local regulations—some jurisdictions may require registration or licensing for high-powered e-bikes.

What safety gear do I need for riding at high speeds?

For speeds above 28 mph, we strongly recommend:

• DOT-approved full-face or modular motorcycle helmet
• Armored riding jacket
• Motorcycle gloves
• Knee and elbow pads
• Sturdy boots with ankle protection
• Eye protection (if not using full-face helmet)

At 50 mph, this bike performs like a motorcycle—dress accordingly.

How do I switch between speed modes?

Press the "S" button on the display to cycle through speed gears 1-5. Each gear corresponds to a different speed class. The LED display clearly shows your current mode. You can also access hidden functions like switching between kilometers/miles and trip/total mileage using button combinations detailed in the manual.

What's the difference between the G100 and G100 Pro?

The G100 Pro features several key upgrades:

• Dual battery system (72V 33Ah vs single battery)
• Auto-switching dual-battery balancer
• Extended range (up to 78 miles vs 50-60 miles)
• Enhanced suspension system
• Improved NFC unlock system
• Sequential turn signals

The Pro is designed for riders who demand maximum range and performance.

Can I ride this bike in the rain or snow?

The G100 Pro has an IP54 waterproof rating, meaning it's protected against splashing water and dust. You can ride in light to moderate rain, but avoid deep puddles, submersion, or pressure washing. The fat tires provide excellent traction in wet conditions and light snow, but exercise caution on slippery surfaces at high speeds.

How much does it cost to charge the battery?

Based on average US electricity rates ($0.13/kWh), a full charge of the 72V 33Ah battery system (approximately 2.4 kWh) costs about $0.31. If you ride 50 miles per charge, that's less than $0.01 per mile—dramatically cheaper than gas-powered vehicles.

What maintenance does the G100 Pro require?

Maintenance is minimal compared to gas motorcycles:

• Check tire pressure weekly
• Inspect brakes monthly
• Clean and lubricate chain every 200-300 miles
• Check all bolts and connections monthly
• Keep battery charged (don't store fully depleted)
• Annual professional inspection recommended

The brushless motor requires virtually no maintenance.

Is the G100 Pro suitable for off-road trail riding?

Absolutely. The full suspension system, fat tires, and powerful motor make the G100 Pro excellent for off-road use. The 170Nm of torque handles steep climbs, and the suspension absorbs trail obstacles. The 20" wheels provide better maneuverability than larger wheels on technical terrain. This is where you can legally use Class 5 mode for maximum performance.

What's the recommended rider height range?

The G100 Pro accommodates riders from 5'3" to 6'5". The seat height is adjustable from 32" to 33", and the handlebar position works well for a wide range of body types. If you're at the extreme ends of this range, we recommend testing the fit carefully or considering alternative models.

Can I add accessories like cargo bags or phone mounts?

Yes! The G100 Pro includes a rear rack (33 lbs capacity) that ships separately. You can add:

• Cargo bags and panniers
• Phone mounts (handlebar or stem)
• Additional lighting
• Mirrors
• Cup holders
• Storage boxes

The sturdy frame and rack system support various accessories for commuting or touring.

How long will the battery last before needing replacement?

The lithium-ion battery system is rated for 800-1000 charge cycles before capacity drops to 80%. With proper care (avoiding extreme temperatures, not storing fully depleted, charging regularly), expect 3-5 years of battery life with regular use. Replacement batteries are available through HappyRun.

What's the warranty coverage?

The G100 Pro includes a manufacturer limited warranty covering defects in materials and workmanship. Warranty details vary by component (frame, motor, battery, electronics). Contact Eco Bikes USA for complete warranty information. Note that warranty may not cover damage from off-road use, modifications, or operation beyond legal speed limits.

HappyRun Electric Bike Warranty Policy

At Eco Bike USA, all HappyRun electric bikes come with comprehensive manufacturer warranty coverage. This warranty protects your investment against defects in materials and workmanship when the bike is used normally according to the manufacturer's guidelines.

Warranty Coverage

The warranty period begins on the date of delivery of your original purchase. Coverage varies by component as outlined below:

Frame & Structure

• Frame: 24 months - Covers natural deformation, open welding, desoldering, and fracture due to manufacturing defects. Does not cover self-modification or collision damage.
• Front Forks & Handlebar: 12 months

Essential Components

6-Month Coverage:

• Crank Chain Plate
• Wheel Hub & Spokes
• Derailleur & Freewheel
• Chain & Bottom Bracket
• Shock Absorber
• Kickstand, Rims, Shifter

3-Month Coverage:

• Pedals, Tires, Saddles
• Fenders, Brakes
• Brake Discs, Brake Rods, Brake Levers

Note: Punctures from sharp objects, collision damage, human-caused damage, and self-modifications are not covered.

Electrical Components

12-Month Coverage:

• Motors, Halls, Bearings
• Controller, Charger, Main Harness
• Battery: Maintains up to 75% of original capacity for up to 300 charging cycles

Covers short circuits, burnouts, and performance failures from manufacturing defects. Does not cover water damage, disconnections, or human error.

6-Month Coverage:

• Display, Speed Control Knob
• Booster, Throttle

3-Month Coverage:

• Headlights, Turn Signal Lights
• Taillights, Keys, Switches

What's NOT Covered

This warranty does not cover:

• Normal wear and tear
• Damage from abuse, neglect, misuse, or accidents
• Stunt riding, ramp jumping, or activities inconsistent with intended use
• Improper battery charging or use of non-HappyRun chargers
• Third-party parts, accessories, or modifications
• Modified or tampered components
• Lost or damaged keys/NFC cards
• Repairs by unauthorized persons
• Stolen bikes

Important: All warranties are void if electrical parts have been repaired or modified by unauthorized personnel.

Filing a Warranty Claim

To file a warranty claim, please contact us at support@ecobikesusa.com with:

1. Proof of purchase
2. Photos or videos of the damaged product
3. Description of the issue

We encourage you to reach out before filing a claim, as many issues have simple fixes that don't require replacement parts.

Note:

• HappyRun will not replace parts without photo or video evidence
• Free replacement parts are provided; installation fees are not covered unless authorized
• Shipping damage claims must be filed within 14 days of delivery
• Scratched accessories during shipping are not eligible for replacement

Warranty Region

This warranty applies only to bikes purchased within the continental United States (lower 48 states). We do not ship warranty parts to Alaska, Hawaii, Puerto Rico, or other U.S. territories.

Questions?

Contact Eco Bike USA at support@ecobikesusa.com for warranty assistance and troubleshooting support.

HappyRun Electric Bike Return & Refund Policy

At Eco Bike USA, we want you to be completely satisfied with your HappyRun electric bike purchase. Please review our return policy carefully before making your purchase.

Order Cancellation

To cancel an order, email us at support@ecobikesusa.com before shipment. Cancellation requests are subject to approval and not guaranteed. If successfully canceled, you'll receive email confirmation within 24 hours. A 4.5% transaction processing fee (retained by the payment processor, not Eco Bike USA) will be deducted from your refund.

After Shipment: Orders cannot be canceled once shipped, but you may refuse the package. A 4.5% transaction processing fee and return shipping costs apply: $150 for adult bikes ($200 for G100 Pro/G300 Pro models) and $40 for kids' bikes. The transaction fee can be waived if you opt for a product exchange instead.

Return Policy

14-Day Return Window

Returns must be initiated within 14 days of delivery. Returns are not accepted after 14 days except for quality issues.

Holiday Exception: Purchases made between November 21st and December 24th can be returned until January 6th of the following year.

Non-Quality Returns

New & Unused Bikes (Within 14 Days):

• Return shipping fee: $150 per bike ($200 for G100 Pro/G300 Pro)
• 4.5% transaction processing fee applies
• No restocking fee

Used Bikes (Within 14 Days):

• Return shipping fee: $150 per bike ($200 for G100 Pro/G300 Pro)
• 20% restocking fee
• 4.5% transaction processing fee
• Bike must be in good condition with odometer reading under 20 miles

Quality Issue Returns

Within 14 Days:

• Full refund with no return shipping or processing fees (for critically damaged items affecting functional use)
• Option to exchange for another e-bike at no additional cost
• Our team will investigate all quality claims; intentional or man-made damage will incur return shipping fees

Critically damaged items are defined as products with main structure deformation affecting normal function.

After 14 Days:

• Return shipping fees may apply depending on circumstances
• Contact support@ecobikesusa.com for evaluation

What's NOT Considered a Quality Issue:

• Minor damage to outer packaging
• Damage to parts or wearing parts after excessive use
• Normal wear and tear from regular use

Accessories & Components

New & Unused (Within 14 Days):

• Full refund available
• Return shipping charges:
  
  $50 for wheels, motors, batteries, trailers
  $15 for all other accessories

Return Requirements

All returns must include:

• Original packaging and shipping box
• All included items (battery, charger, keys, tool set, manual, etc.)
• Products must be free of wear, dirt, and scratches
• Same condition as received

Important: Items returned without prior approval will not be accepted.

How to Start a Return

Contact us at support@ecobikesusa.com with:

• Photos and/or videos as evidence
• Order number and reason for return

If approved, we'll provide a return shipping label. If you arrange your own return shipping (with our approval), you're responsible for safe shipment and successful delivery. Eco Bike USA is not liable for lost return packages or customer-arranged shipping costs.

Refund Processing

Refunds are processed within 10-15 business days after we receive and inspect the returned item. Once confirmed, applicable fees will be deducted and the remaining amount refunded to your original payment method.

If your refund hasn't appeared after 7 days, contact your credit card company or bank, as processing times vary by financial institution.

Important Notes

• This policy applies only to HappyRun bikes purchased through Eco Bike USA
• All fees are subject to the terms outlined above
• Choose carefully and contact our team at support@ecobikesusa.com if you need assistance selecting the right product