Written By Doug Smirnoff

BPM F-35 Common Problems and Troubleshooting

If you own a BPM F-35 electric bike, you’re undoubtedly enjoying the exhilarating experience it provides. However, like any sophisticated piece of machinery, the BPM F-35 may encounter occasional issues that can disrupt your rides. In this guide, we’ll explore common problems that BPM F-35 owners may encounter and provide troubleshooting solutions to keep your electric bike in top shape.

BPM F-35 Overview

The BPM F-35 is a powerful electric mountain bike designed for off-road adventures. With its 1500W motor and 48V 14AH Samsung Lithium Ion battery, it offers exceptional performance and range. Here are some key features of the BPM F-35:

  • Full Electric Range: Up to 31 Miles
  • Pedal Assist Range: Up to 37 Miles
  • Adjustable Seat: perfect for any size rider.
  • Maximum Rider Weight: 300lbs
  • Designed for All Terrains

Product Details

DESCRIPTION BPM F-35 1500W 48V 14AH fat tire electric mountain full suspension 26×4′ E-bike + USB charging port.
Frame and Rim Black and camouflage frame and rim.
Battery 48V 15AH Samsung Lithium Ion
Motor 1500W Rear Hub Brushless Motor
ODOMETER LCD Display with Speedometer, Battery Level, Speed Setting Indicator, and Trip Distance
HARDWARE DETAILS Shifter: Shimano 7-speed TX-50 7R/RD/TX-55GSD/MF-TZ21CP
Rear Gears: 7 Speed
Frame: Aluminium-Alloy – heavy duty for off roading
Fork: Front Suspension
Shock: Rear Spring
Handlebar: Aluminum
Seat Post: Aluminum & Saddle Seat
Pedals: Aluminum
Tires: Kenda 26” X 4.0” Fat Tire
Brakes: F/R mechanical disc brake
Freewheel: Shimano Pro Freewheel 7 Speeds
Headlight: LED

Causes of Common Problems with the BPM F-35

Before we dive into specific troubleshooting solutions, let’s take a look at some of the common problems BPM F-35 owners might encounter. In the following subsections, we’ll address each of these issues and provide guidance on resolving them.

Common Problems with the BPM F-35 Electric Bike

1. Battery Not Holding Charge

Description: One common issue BPM F-35 owners may encounter is that the bike’s battery fails to hold a charge as expected.

Cause: This problem can occur due to normal wear and tear on the battery over time or improper charging practices.

Troubleshooting: To resolve this issue, follow these steps:

  1. Check the charging cable and connector for any damage.
  2. Ensure the charger is functioning correctly.
  3. If the battery still doesn’t charge, consider replacing it with a compatible Samsung Lithium Ion battery.

2. Motor Stopped Working

Description: Some BPM F-35 users may experience a complete loss of power from the electric motor.

Cause: Motor issues can be caused by electrical faults, controller problems, or motor wear and tear.

Troubleshooting: To address a non-working motor, try the following:

  1. Check all electrical connections for loose wires or damaged components.
  2. Test the throttle and controller to ensure they are functioning properly.
  3. If the motor still doesn’t work, consult a professional technician for diagnosis and potential repairs.

3. Display Malfunction

Description: Some BPM F-35 riders may encounter issues with the LCD display, such as incorrect readings or a blank screen.

Cause: Display problems can result from loose connections, water damage, or software glitches.

Troubleshooting: If you face display issues, follow these steps:

  1. Check the display connections for any loose cables.
  2. Ensure the display unit is dry and free from water damage.
  3. If problems persist, try resetting the display or updating its firmware according to the manufacturer’s instructions.

4. Brake Performance Decline

Description: Over time, BPM F-35 riders may notice a decline in the bike’s brake performance.

Cause: Brake issues can be attributed to worn brake pads, dirty brake discs, or cable adjustments.

Troubleshooting: To restore brake performance, take the following steps:

  1. Inspect the brake pads for wear and replace them if necessary.
  2. Clean the brake discs to remove dirt and debris that may affect braking.
  3. Adjust the brake cables to ensure optimal braking power.

5. Tire Punctures

Description: Punctured tires can be a frustrating issue for BPM F-35 riders, especially during off-road adventures.

Cause: Tire punctures are typically caused by sharp objects on the trail or low tire pressure.

Troubleshooting: To address tire punctures, follow these steps:

  1. Carry a tire repair kit and a pump with you during rides for quick fixes.
  2. Inspect your tires before each ride for signs of damage or low pressure.
  3. If a puncture occurs, use the repair kit to patch the hole or replace the inner tube as needed.

6. Chain Slippage

Description: Some BPM F-35 riders may experience chain slippage, where the chain skips or shifts unexpectedly while pedaling.

Cause: Chain slippage can be caused by a loose chain, worn chainring or cassette, or improper gear shifting.

Troubleshooting: To address chain slippage, try the following:

  • Inspect the chain tension and adjust it to the manufacturer’s specifications.
  • Check the chainring and cassette for signs of wear and replace them if necessary.
  • Practice smooth gear shifting and avoid sudden, forceful pedaling.

7. Unresponsive Brakes

Description: Unresponsive brakes can pose a safety hazard for BPM F-35 riders as the brakes may not engage when needed.

Cause: Brake issues may arise from air in the brake lines, worn brake pads, or brake fluid problems.

Troubleshooting: To address unresponsive brakes, follow these steps:

  • Bleed the brake lines to remove air bubbles and ensure proper brake fluid flow.
  • Inspect the brake pads for wear and replace them if they are worn down.
  • Check the brake fluid level and top it up if it’s low, using the recommended fluid type.

8. Noisy Suspension

Description: Some BPM F-35 riders may notice squeaking or clunking noises coming from the bike’s suspension when riding over rough terrain.

Cause: Noisy suspension can result from dirt and debris in the suspension components or worn-out suspension bushings.

Troubleshooting: To address noisy suspension, take the following steps:

  • Clean the suspension components and lubricate them to reduce friction and noise.
  • Inspect the suspension bushings for signs of wear and replace them if needed.
  • Ensure that all suspension bolts and connections are tightened to the manufacturer’s specifications.

9. Inconsistent Pedal Assist

Description: BPM F-35 riders may encounter issues with inconsistent pedal assist, where the electric motor’s support varies unexpectedly.

Cause: Inconsistent pedal assist can be caused by sensor malfunctions, loose electrical connections, or software glitches.

Troubleshooting: To address pedal assist problems, try the following:

  • Check the pedal assist sensors for damage and clean them if they are dirty.
  • Inspect all electrical connections, including those in the pedal assist system, and secure any loose connections.
  • If problems persist, consider updating the bike’s firmware or seeking professional assistance.

10. Charging Port Issues

Description: Some BPM F-35 owners may face difficulties with the bike’s charging port, preventing proper battery charging.

Cause: Charging port issues can result from dirt accumulation, damaged connectors, or faulty wiring.

Troubleshooting: To address charging port problems, follow these steps:

  • Clean the charging port area to remove dirt and debris that may obstruct the connection.
  • Inspect the charging cable and connectors for any signs of damage and replace them if necessary.
  • If the issue persists, consult a technician to diagnose and repair any wiring or charging port problems.

11. Uneven Tire Wear

Description: Some BPM F-35 riders may notice uneven tire wear, which can affect the bike’s stability and performance.

Cause: Uneven tire wear can be caused by improper tire pressure, misaligned wheels, or riding on rough terrain.

Troubleshooting: To address uneven tire wear, follow these steps:

  • Regularly check and maintain proper tire pressure according to the manufacturer’s recommendations.
  • Inspect the wheel alignment and adjust it if necessary to ensure even tire wear.
  • If riding off-road frequently, consider investing in more durable tires designed for rough terrain.

12. Loose Bolts and Fasteners

Description: Over time, some bolts and fasteners on the BPM F-35 may become loose, potentially leading to safety concerns.

Cause: Vibration during rides and regular use can cause bolts and fasteners to loosen over time.

Troubleshooting: To address loose bolts and fasteners, take the following steps:

  • Regularly inspect all bolts and fasteners on the bike for signs of loosening.
  • Tighten any loose bolts and fasteners to the manufacturer’s recommended torque settings.
  • Consider using thread-locking compounds on critical fasteners to prevent them from coming loose.

13. Rust and Corrosion

Description: BPM F-35 riders in humid or wet environments may encounter issues with rust and corrosion on certain bike components.

Cause: Exposure to moisture and salt can lead to rust and corrosion on metal parts of the bike.

Troubleshooting: To address rust and corrosion, follow these steps:

  • Regularly clean and dry the bike, paying special attention to metal parts.
  • Apply a rust-inhibiting coating or lubricant to susceptible components to prevent corrosion.
  • Store the bike in a dry and sheltered area when not in use, especially in humid environments.

14. Loose Handlebars or Stem

Description: Loose handlebars or stem can affect the bike’s steering and control, posing a safety risk.

Cause: Vibrations and impacts from riding on uneven terrain can cause the handlebars or stem to become loose.

Troubleshooting: To address loose handlebars or stem, follow these steps:

  • Regularly check the tightness of the handlebar clamp bolts and stem bolts.
  • If they are loose, tighten them to the manufacturer’s recommended torque settings.
  • Consider using thread-locking compounds on these bolts to prevent them from loosening.

15. Sudden Power Cut-off

Description: Some BPM F-35 riders may experience sudden power cut-offs, where the electric motor stops working unexpectedly.

Cause: Power cut-offs can result from electrical issues, loose connections, or overheating.

Troubleshooting: To address sudden power cut-offs, try the following:

  • Inspect all electrical connections for loose wires or damaged components.
  • Check for overheating by ensuring the bike’s cooling system is functioning correctly.
  • If the issue persists, consult a professional technician to diagnose and repair the electrical problem.

16. Frequent Chain Derailments

Description: Some BPM F-35 riders may encounter frequent chain derailments, which can disrupt their rides.

Cause: Chain derailments can occur due to misaligned gears, loose derailleur adjustments, or a worn-out chain.

Troubleshooting: To address frequent chain derailments, follow these steps:

  • Check and adjust the gear alignment to ensure smooth chain movement.
  • Inspect the derailleur for proper adjustment and tighten any loose parts.
  • If the chain is worn, consider replacing it with a new one to prevent further derailments.

17. Sluggish Acceleration

Description: Some BPM F-35 riders may notice sluggish acceleration, where the bike takes longer to reach its top speed.

Cause: Sluggish acceleration can result from a weak battery, controller issues, or motor wear.

Troubleshooting: To address sluggish acceleration, try the following:

  • Check the battery’s health and charge level; replace it if it’s degraded.
  • Inspect the controller for any faults and ensure it’s functioning correctly.
  • If motor wear is suspected, consult a technician for motor maintenance or replacement.

18. Unresponsive Pedal Assist

Description: Some BPM F-35 riders may encounter issues with pedal assist not engaging when expected.

Cause: Pedal assist problems can occur due to sensor malfunctions, wiring issues, or software glitches.

Troubleshooting: To address unresponsive pedal assist, follow these steps:

  • Check pedal assist sensors for damage and replace them if needed.
  • Inspect the wiring and connections in the pedal assist system for loose or damaged parts.
  • Update the bike’s firmware if available to resolve potential software issues.

19. Range Reduction in Cold Weather

Description: BPM F-35 riders in colder climates may experience a reduction in electric range during low-temperature conditions.

Cause: Cold weather can affect battery performance and reduce its capacity temporarily.

Troubleshooting: To mitigate range reduction in cold weather, consider these steps:

  • Keep the battery warm before and during rides by storing it at room temperature and using a battery cover or insulation.
  • Plan shorter routes or carry a spare battery for longer rides in cold conditions.
  • Charge the battery indoors and avoid charging it in extremely cold temperatures.

20. Loose or Uncomfortable Seat

Description: Some BPM F-35 riders may find that the seat becomes loose or uncomfortable during rides.

Cause: Seat issues can arise from loose seat post clamps, improper seat adjustment, or discomfort due to the saddle.

Troubleshooting: To address seat-related problems, follow these steps:

  • Regularly check the seat post clamps for tightness and adjust them as needed.
  • Ensure that the seat is adjusted to your preferred height and angle for comfort.
  • If the saddle is uncomfortable, consider replacing it with a more ergonomic one.

21. Braking Noise and Vibration

Description: Some BPM F-35 riders may experience unusual noises and vibrations when applying the brakes.

Cause: Brake noise and vibration can be caused by uneven brake pad wear, contaminated brake discs, or misaligned brake calipers.

Troubleshooting: To address braking noise and vibration, follow these steps:

  • Inspect the brake pads for uneven wear and replace them if necessary.
  • Clean the brake discs thoroughly to remove any contaminants like oil or dirt.
  • Check and adjust the brake caliper alignment to ensure even pressure on the discs.

22. Loose Pedals

Description: Some BPM F-35 riders may encounter issues with loose pedals, which can affect their pedaling efficiency.

Cause: Loose pedals can result from wear and tear on pedal threads or improper installation.

Troubleshooting: To address loose pedals, try the following:

  • Tighten the pedal threads securely using a pedal wrench.
  • Apply a thread-locking compound to the pedal threads to prevent them from coming loose in the future.
  • If the pedals are damaged, consider replacing them with new ones.

23. Flickering Lights

Description: Some BPM F-35 riders may experience flickering lights on the bike, including the headlight or brake lights.

Cause: Flickering lights can occur due to loose connections, wiring issues, or battery problems.

Troubleshooting: To address flickering lights, follow these steps:

  • Inspect all electrical connections, including those related to the lights, for loose or damaged wires.
  • Check the battery’s health and charge level; replace it if needed.
  • If the issue persists, consult a technician to diagnose and repair the electrical problem.

24. Handlebar Wobble

Description: BPM F-35 riders may notice handlebar wobble, which can affect steering stability.

Cause: Handlebar wobble can result from loose headset bearings, misaligned handlebars, or issues with the fork.

Troubleshooting: To address handlebar wobble, try the following:

  • Check and tighten the headset bearings to the manufacturer’s recommended torque settings.
  • Ensure that the handlebars are properly aligned with the front wheel.
  • Inspect the fork for any damage or misalignment and seek professional assistance if necessary.

25. Loss of Power on Uphills

Description: Some BPM F-35 riders may experience a noticeable loss of power when climbing steep hills.

Cause: Power loss on uphills can occur due to the bike’s weight, battery capacity, or motor limitations.

Troubleshooting: To mitigate power loss on uphills, consider these steps:

  • Charge the battery fully before embarking on hilly terrain to ensure maximum power.
  • Consider using a lower pedal assist level or adjusting your riding technique to conserve battery power.
  • If you frequently ride in hilly areas, evaluate the possibility of upgrading to a bike with more powerful components.

BPM F-35 Electric Bike User Reviews

Positive Reviews from BPM F-35 Electric Bike Users

Many users have shared their experiences with the BPM F-35 Electric Bike, and overall, there have been several positive aspects of this electric bike that users have highlighted:

  • Some users were satisfied with the exceptional battery life of the BPM F-35, praising its long-lasting power during extended rides.
  • Several riders mentioned that the bike’s 1500W motor provided strong and consistent performance, making uphill climbs easier and more enjoyable.
  • Many users appreciated the versatility of the F-35, noting its suitability for various terrains, including off-road adventures.
  • Several riders found the adjustable seat feature to be accommodating for riders of all sizes, enhancing comfort during their journeys.
  • Positive comments were also made about the bike’s build quality, with riders noting its robust aluminum-alloy frame and heavy-duty components.

These positive reviews collectively reflect a satisfaction with the BPM F-35 Electric Bike’s performance, durability, and versatility.

Negative User Reviews of the BPM F-35 Electric Bike

While the BPM F-35 Electric Bike has received positive feedback, there have also been some concerns raised by users, primarily related to the bike’s performance and features:

  • Some users were not satisfied with occasional electrical issues, including problems with the motor and throttle control.
  • A few riders mentioned concerns about the bike’s weight, noting that it can be challenging to transport or maneuver in certain situations.
  • There were a few reports of battery-related issues, such as shorter than expected battery life in certain conditions.
  • Several users expressed mixed opinions about the bike’s suspension, with some finding it comfortable and others feeling that it could be improved.
  • A small number of riders experienced issues with tire punctures and suggested that the bike’s tires might benefit from enhanced durability.

It’s worth noting that while these negative comments exist, they represent a minority of user experiences, and most users have reported positive feedback about the BPM F-35 Electric Bike.

All information about user reviews is based on publicly available reviews from Walmart.

The majority of users who have shared their feedback on the BPM F-35 Electric Bike have expressed satisfaction with its performance and features. While there are some negative comments and concerns, they represent a minority of users, and overall, the BPM F-35 has garnered positive reviews for its battery life, motor power, versatility, and build quality.

BPM F-35 Electric Bike Manual

The operating instructions and user manual for the BPM F-35 Electric Bike can be found on the manufacturer’s official website. For detailed guidance on assembly, maintenance, and safe usage of your BPM F-35, we recommend visiting the manufacturer’s website and downloading the official manual.

BPM F-35 Frequently Asked Questions

Q: How can I extend the battery life of my BPM F-35 Electric Bike?

A: To maximize battery life, avoid overcharging and discharge the battery occasionally. Store the bike and battery in a cool, dry place when not in use and follow the manufacturer’s recommendations for proper care.

Q: What should I do if my BPM F-35 bike suddenly loses power?

A: Check the battery charge and connections first. If those are not the issue, consult the troubleshooting section of your user manual. If problems persist, contact customer service or visit a service center for assistance.

Q: How do I adjust the pedal assist levels on my BPM F-35?

A: Most BPM F-35 models offer adjustable pedal assist levels through the bike’s display or controller. Refer to your user manual for specific instructions on adjusting pedal assist settings.

Q: Can I use the BPM F-35 on rough off-road terrain?

A: Yes, the BPM F-35 is designed for versatility and can handle off-road terrain. However, ensure you follow proper maintenance and take necessary safety precautions when riding in challenging conditions.

Q: What is the recommended maintenance schedule for the BPM F-35 Electric Bike?

A: Your user manual will provide a maintenance schedule with guidelines for regular checks and upkeep. Following this schedule will help keep your bike in optimal condition.


For any issues or concerns with your BPM F-35 Electric Bike, we recommend referring to the user manual, reaching out to customer service, or visiting an authorized service center. The manual contains valuable information on assembly, troubleshooting, and maintenance, while customer service and service centers can provide expert assistance in resolving any problems you may encounter with your BPM F-35.

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