HappyRun G100 48V/38Ah 1000W Fat Tire Electric Bike

Frequently Asked Questions

Do I need a driver's license to ride the G100?

No driver's license is required. The G100 is a street-legal e-bike with an on-road mode (28 mph) and off-road mode (up to 38 mph). The bike defaults to off-road mode, but you can switch to street-legal mode for urban commuting. Check your local regulations, as some states may have specific requirements for e-bikes exceeding 28 mph.

Does the bike come fully assembled?

The bike arrives 80% assembled. You'll need to attach the handlebars, front wheel, and pedals—a simple process that takes about 30 minutes. A guidance video link QR code is included on the screen for easy step-by-step instructions.

What's the recommended rider height?

The G100 is designed for riders between 5'3" and 6'5". The seat height is 32 inches and adjustable for comfort across a wide range of heights.

Can I ride it as a commuter bike?

Absolutely. The G100 excels as a commuter bike, handling urban roads, rural paths, and mountainous terrain with ease. Its powerful motor, long range, and full suspension make daily commuting comfortable and efficient. Plus, the retro design adds style to your ride.

Can it really reach 38 mph max speed?

Yes, the G100 can reach 38 mph in off-road mode. Actual speed depends on battery level, rider weight, and terrain. Most riders experience speeds between 34-36 mph under normal conditions.

How long does the battery last?

The dual battery system provides up to 85 miles per charge depending on terrain, rider weight, and assist level. Battery lifespan is typically 800-1000 charge cycles, which translates to 3-5 years of regular use.

Can I ride it in the rain?

Yes, the G100 has an IP54 waterproof rating, making it resistant to light rain and splashes. Avoid deep puddles and submersion, but riding in wet conditions is safe.

Is it street legal?

Yes, in most states. The G100 meets Class 2 e-bike specifications when set to street-legal mode (28 mph with throttle and pedal assist). Off-road mode exceeds this, so check your local regulations for high-speed e-bike use.

How do I switch between kilometers and miles?

Once the e-bike is unlocked, hold the brake lever and press the "S" button twice to toggle between kilometers and miles.

How do I switch between single trip mileage and total mileage?

Once the e-bike is unlocked, press the "S" button three times to toggle between trip mileage and total mileage.

What are the hidden functions of the G100 speed button?

The "S" button has multiple functions:

1. Press and hold for 1 second (power off) to turn on
2. Press and hold for 2 seconds (power on) to turn off
3. Press once to switch speed gears (1-5)
4. Hold brake lever + press twice to switch km/miles
5. Press three times to switch trip/total mileage
6. Hold brake lever + press five times to toggle zero/non-zero start
7. Press nine times to write an NFC card

Is the G100 suitable for off-road riding?

Yes, the G100 is a full-suspension, all-terrain electric bike designed for off-road use. Its powerful peak 2000W motor, fat tires, and dual suspension system handle muddy trails, gravel paths, rocky roads, and steep inclines with ease. It's perfect for outdoor enthusiasts who love exploring diverse terrains.

How does the NFC unlocking work?

The G100 features NFC smart unlocking technology with a 0.3-second response time. Simply touch your NFC card to the sensor for instant, keyless access. Two NFC cards are included with your purchase.

What's the weight limit?

The maximum load capacity is 400 lbs, including the rider and any cargo on the rear rack (up to 33 lbs).

How much does the bike weigh?

The G100 weighs 107 lbs, providing a solid, stable ride while still being manageable for most adults.

Can I remove the batteries for charging?

Yes, both batteries are removable for convenient charging at home, work, or anywhere with an outlet. This also adds security when parking your bike.

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

Do I need a driver's license to ride the G100?

No driver's license is required. The G100 is a street-legal e-bike with an on-road mode (28 mph) and off-road mode (up to 38 mph). The bike defaults to off-road mode, but you can switch to street-legal mode for urban commuting. Check your local regulations, as some states may have specific requirements for e-bikes exceeding 28 mph.

Does the bike come fully assembled?

The bike arrives 80% assembled. You'll need to attach the handlebars, front wheel, and pedals—a simple process that takes about 30 minutes. A guidance video link QR code is included on the screen for easy step-by-step instructions.

What's the recommended rider height?

The G100 is designed for riders between 5'3" and 6'5". The seat height is 32 inches and adjustable for comfort across a wide range of heights.

Can I ride it as a commuter bike?

Absolutely. The G100 excels as a commuter bike, handling urban roads, rural paths, and mountainous terrain with ease. Its powerful motor, long range, and full suspension make daily commuting comfortable and efficient. Plus, the retro design adds style to your ride.

Can it really reach 38 mph max speed?

Yes, the G100 can reach 38 mph in off-road mode. Actual speed depends on battery level, rider weight, and terrain. Most riders experience speeds between 34-36 mph under normal conditions.

How long does the battery last?

The dual battery system provides up to 85 miles per charge depending on terrain, rider weight, and assist level. Battery lifespan is typically 800-1000 charge cycles, which translates to 3-5 years of regular use.

Can I ride it in the rain?

Yes, the G100 has an IP54 waterproof rating, making it resistant to light rain and splashes. Avoid deep puddles and submersion, but riding in wet conditions is safe.

Is it street legal?

Yes, in most states. The G100 meets Class 2 e-bike specifications when set to street-legal mode (28 mph with throttle and pedal assist). Off-road mode exceeds this, so check your local regulations for high-speed e-bike use.

How do I switch between kilometers and miles?

Once the e-bike is unlocked, hold the brake lever and press the "S" button twice to toggle between kilometers and miles.

How do I switch between single trip mileage and total mileage?

Once the e-bike is unlocked, press the "S" button three times to toggle between trip mileage and total mileage.

What are the hidden functions of the G100 speed button?

The "S" button has multiple functions:

1. Press and hold for 1 second (power off) to turn on
2. Press and hold for 2 seconds (power on) to turn off
3. Press once to switch speed gears (1-5)
4. Hold brake lever + press twice to switch km/miles
5. Press three times to switch trip/total mileage
6. Hold brake lever + press five times to toggle zero/non-zero start
7. Press nine times to write an NFC card

Is the G100 suitable for off-road riding?

Yes, the G100 is a full-suspension, all-terrain electric bike designed for off-road use. Its powerful peak 2000W motor, fat tires, and dual suspension system handle muddy trails, gravel paths, rocky roads, and steep inclines with ease. It's perfect for outdoor enthusiasts who love exploring diverse terrains.

How does the NFC unlocking work?

The G100 features NFC smart unlocking technology with a 0.3-second response time. Simply touch your NFC card to the sensor for instant, keyless access. Two NFC cards are included with your purchase.

What's the weight limit?

The maximum load capacity is 400 lbs, including the rider and any cargo on the rear rack (up to 33 lbs).

How much does the bike weigh?

The G100 weighs 107 lbs, providing a solid, stable ride while still being manageable for most adults.

Can I remove the batteries for charging?

Yes, both batteries are removable for convenient charging at home, work, or anywhere with an outlet. This also adds security when parking your bike.

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

Do I need a driver's license to ride the G100?

No driver's license is required. The G100 is a street-legal e-bike with an on-road mode (28 mph) and off-road mode (up to 38 mph). The bike defaults to off-road mode, but you can switch to street-legal mode for urban commuting. Check your local regulations, as some states may have specific requirements for e-bikes exceeding 28 mph.

Does the bike come fully assembled?

The bike arrives 80% assembled. You'll need to attach the handlebars, front wheel, and pedals—a simple process that takes about 30 minutes. A guidance video link QR code is included on the screen for easy step-by-step instructions.

What's the recommended rider height?

The G100 is designed for riders between 5'3" and 6'5". The seat height is 32 inches and adjustable for comfort across a wide range of heights.

Can I ride it as a commuter bike?

Absolutely. The G100 excels as a commuter bike, handling urban roads, rural paths, and mountainous terrain with ease. Its powerful motor, long range, and full suspension make daily commuting comfortable and efficient. Plus, the retro design adds style to your ride.

Can it really reach 38 mph max speed?

Yes, the G100 can reach 38 mph in off-road mode. Actual speed depends on battery level, rider weight, and terrain. Most riders experience speeds between 34-36 mph under normal conditions.

How long does the battery last?

The dual battery system provides up to 85 miles per charge depending on terrain, rider weight, and assist level. Battery lifespan is typically 800-1000 charge cycles, which translates to 3-5 years of regular use.

Can I ride it in the rain?

Yes, the G100 has an IP54 waterproof rating, making it resistant to light rain and splashes. Avoid deep puddles and submersion, but riding in wet conditions is safe.

Is it street legal?

Yes, in most states. The G100 meets Class 2 e-bike specifications when set to street-legal mode (28 mph with throttle and pedal assist). Off-road mode exceeds this, so check your local regulations for high-speed e-bike use.

How do I switch between kilometers and miles?

Once the e-bike is unlocked, hold the brake lever and press the "S" button twice to toggle between kilometers and miles.

How do I switch between single trip mileage and total mileage?

Once the e-bike is unlocked, press the "S" button three times to toggle between trip mileage and total mileage.

What are the hidden functions of the G100 speed button?

The "S" button has multiple functions:

1. Press and hold for 1 second (power off) to turn on
2. Press and hold for 2 seconds (power on) to turn off
3. Press once to switch speed gears (1-5)
4. Hold brake lever + press twice to switch km/miles
5. Press three times to switch trip/total mileage
6. Hold brake lever + press five times to toggle zero/non-zero start
7. Press nine times to write an NFC card

Is the G100 suitable for off-road riding?

Yes, the G100 is a full-suspension, all-terrain electric bike designed for off-road use. Its powerful peak 2000W motor, fat tires, and dual suspension system handle muddy trails, gravel paths, rocky roads, and steep inclines with ease. It's perfect for outdoor enthusiasts who love exploring diverse terrains.

How does the NFC unlocking work?

The G100 features NFC smart unlocking technology with a 0.3-second response time. Simply touch your NFC card to the sensor for instant, keyless access. Two NFC cards are included with your purchase.

What's the weight limit?

The maximum load capacity is 400 lbs, including the rider and any cargo on the rear rack (up to 33 lbs).

How much does the bike weigh?

The G100 weighs 107 lbs, providing a solid, stable ride while still being manageable for most adults.

Can I remove the batteries for charging?

Yes, both batteries are removable for convenient charging at home, work, or anywhere with an outlet. This also adds security when parking your bike.

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

Do I need a driver's license to ride the G100?

No driver's license is required. The G100 is a street-legal e-bike with an on-road mode (28 mph) and off-road mode (up to 38 mph). The bike defaults to off-road mode, but you can switch to street-legal mode for urban commuting. Check your local regulations, as some states may have specific requirements for e-bikes exceeding 28 mph.

Does the bike come fully assembled?

The bike arrives 80% assembled. You'll need to attach the handlebars, front wheel, and pedals—a simple process that takes about 30 minutes. A guidance video link QR code is included on the screen for easy step-by-step instructions.

What's the recommended rider height?

The G100 is designed for riders between 5'3" and 6'5". The seat height is 32 inches and adjustable for comfort across a wide range of heights.

Can I ride it as a commuter bike?

Absolutely. The G100 excels as a commuter bike, handling urban roads, rural paths, and mountainous terrain with ease. Its powerful motor, long range, and full suspension make daily commuting comfortable and efficient. Plus, the retro design adds style to your ride.

Can it really reach 38 mph max speed?

Yes, the G100 can reach 38 mph in off-road mode. Actual speed depends on battery level, rider weight, and terrain. Most riders experience speeds between 34-36 mph under normal conditions.

How long does the battery last?

The dual battery system provides up to 85 miles per charge depending on terrain, rider weight, and assist level. Battery lifespan is typically 800-1000 charge cycles, which translates to 3-5 years of regular use.

Can I ride it in the rain?

Yes, the G100 has an IP54 waterproof rating, making it resistant to light rain and splashes. Avoid deep puddles and submersion, but riding in wet conditions is safe.

Is it street legal?

Yes, in most states. The G100 meets Class 2 e-bike specifications when set to street-legal mode (28 mph with throttle and pedal assist). Off-road mode exceeds this, so check your local regulations for high-speed e-bike use.

How do I switch between kilometers and miles?

Once the e-bike is unlocked, hold the brake lever and press the "S" button twice to toggle between kilometers and miles.

How do I switch between single trip mileage and total mileage?

Once the e-bike is unlocked, press the "S" button three times to toggle between trip mileage and total mileage.

What are the hidden functions of the G100 speed button?

The "S" button has multiple functions:

1. Press and hold for 1 second (power off) to turn on
2. Press and hold for 2 seconds (power on) to turn off
3. Press once to switch speed gears (1-5)
4. Hold brake lever + press twice to switch km/miles
5. Press three times to switch trip/total mileage
6. Hold brake lever + press five times to toggle zero/non-zero start
7. Press nine times to write an NFC card

Is the G100 suitable for off-road riding?

Yes, the G100 is a full-suspension, all-terrain electric bike designed for off-road use. Its powerful peak 2000W motor, fat tires, and dual suspension system handle muddy trails, gravel paths, rocky roads, and steep inclines with ease. It's perfect for outdoor enthusiasts who love exploring diverse terrains.

How does the NFC unlocking work?

The G100 features NFC smart unlocking technology with a 0.3-second response time. Simply touch your NFC card to the sensor for instant, keyless access. Two NFC cards are included with your purchase.

What's the weight limit?

The maximum load capacity is 400 lbs, including the rider and any cargo on the rear rack (up to 33 lbs).

How much does the bike weigh?

The G100 weighs 107 lbs, providing a solid, stable ride while still being manageable for most adults.

Can I remove the batteries for charging?

Yes, both batteries are removable for convenient charging at home, work, or anywhere with an outlet. This also adds security when parking your bike.

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

Do I need a driver's license to ride the G100?

No driver's license is required. The G100 is a street-legal e-bike with an on-road mode (28 mph) and off-road mode (up to 38 mph). The bike defaults to off-road mode, but you can switch to street-legal mode for urban commuting. Check your local regulations, as some states may have specific requirements for e-bikes exceeding 28 mph.

Does the bike come fully assembled?

The bike arrives 80% assembled. You'll need to attach the handlebars, front wheel, and pedals—a simple process that takes about 30 minutes. A guidance video link QR code is included on the screen for easy step-by-step instructions.

What's the recommended rider height?

The G100 is designed for riders between 5'3" and 6'5". The seat height is 32 inches and adjustable for comfort across a wide range of heights.

Can I ride it as a commuter bike?

Absolutely. The G100 excels as a commuter bike, handling urban roads, rural paths, and mountainous terrain with ease. Its powerful motor, long range, and full suspension make daily commuting comfortable and efficient. Plus, the retro design adds style to your ride.

Can it really reach 38 mph max speed?

Yes, the G100 can reach 38 mph in off-road mode. Actual speed depends on battery level, rider weight, and terrain. Most riders experience speeds between 34-36 mph under normal conditions.

How long does the battery last?

The dual battery system provides up to 85 miles per charge depending on terrain, rider weight, and assist level. Battery lifespan is typically 800-1000 charge cycles, which translates to 3-5 years of regular use.

Can I ride it in the rain?

Yes, the G100 has an IP54 waterproof rating, making it resistant to light rain and splashes. Avoid deep puddles and submersion, but riding in wet conditions is safe.

Is it street legal?

Yes, in most states. The G100 meets Class 2 e-bike specifications when set to street-legal mode (28 mph with throttle and pedal assist). Off-road mode exceeds this, so check your local regulations for high-speed e-bike use.

How do I switch between kilometers and miles?

Once the e-bike is unlocked, hold the brake lever and press the "S" button twice to toggle between kilometers and miles.

How do I switch between single trip mileage and total mileage?

Once the e-bike is unlocked, press the "S" button three times to toggle between trip mileage and total mileage.

What are the hidden functions of the G100 speed button?

The "S" button has multiple functions:

1. Press and hold for 1 second (power off) to turn on
2. Press and hold for 2 seconds (power on) to turn off
3. Press once to switch speed gears (1-5)
4. Hold brake lever + press twice to switch km/miles
5. Press three times to switch trip/total mileage
6. Hold brake lever + press five times to toggle zero/non-zero start
7. Press nine times to write an NFC card

Is the G100 suitable for off-road riding?

Yes, the G100 is a full-suspension, all-terrain electric bike designed for off-road use. Its powerful peak 2000W motor, fat tires, and dual suspension system handle muddy trails, gravel paths, rocky roads, and steep inclines with ease. It's perfect for outdoor enthusiasts who love exploring diverse terrains.

How does the NFC unlocking work?

The G100 features NFC smart unlocking technology with a 0.3-second response time. Simply touch your NFC card to the sensor for instant, keyless access. Two NFC cards are included with your purchase.

What's the weight limit?

The maximum load capacity is 400 lbs, including the rider and any cargo on the rear rack (up to 33 lbs).

How much does the bike weigh?

The G100 weighs 107 lbs, providing a solid, stable ride while still being manageable for most adults.

Can I remove the batteries for charging?

Yes, both batteries are removable for convenient charging at home, work, or anywhere with an outlet. This also adds security when parking your bike.

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