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Why Does Your Electric Bike Suddenly Lose Power While Riding?

Why Does Your Electric Bike Suddenly Lose Power While Riding?

Riding an electric bike can be a thrilling experience, offering a modern and eco-friendly way to travel. However, it's not uncommon for riders to encounter a sudden loss of power while on the go. It's crucial to understand the potential causes of power loss in electric bikes and learn how to troubleshoot them accordingly.


Understanding the root causes of intermittent power loss in electric bikes is crucial for maintaining the optimal performance of your e-bike. Identifying whether the problem lies within the controller, battery, motor, or wiring can be the first step toward finding a solution. In the following sections, we will delve into each potential cause and offer solutions to help you keep your e-bike running smoothly. MOTOPAI analyzes a few reasons that may cause your electric bike to suddenly lose power.

 

 

Common Causes of Power Loss

Poor Contact with Wiring

 

Poor contact or disconnected solder joints in the connection between the electric bike's battery and circuits, or partial short circuits, can cause the electric bike to suddenly lose power.

 

Power Cut to Electric Lock/Brakes Not Disengaged

 

If the power source to the electric bike's electric lock is disconnected, it will keep the brakes in a constantly powered-off state. This can cause the electric bike to shut down while riding. Additionally, if the brakes are not fully disengaged, they will grip the wheel, preventing rotation and resulting in the power shutdown.

 

Wiring in Electric Throttle Disconnected or Corroded

 

After years of use or long-term storage in a damp environment, this situation may occur in electric bikes, triggering the power cut-off safety mechanism and power loss mid-ride.  

 

Fuse Blown in Battery Management System

 

The last key reason to note is that if the fuse inside the battery blows, it will cause the battery to stop supplying power. This can result in the power shutdown due to insufficient supply, or directly cutting out, leaving the bike unable to continue riding.

 

External Factors Affecting Power

 

Environmental Conditions

● Temperature: Extreme temperatures can affect your e-bike's battery performance. Cold weather may cause the battery to lose charge quickly, while hot weather can lead to overheating. Make sure to store and use your e-bike within the recommended temperature range to ensure optimal performance.


● Terrain: Riding on hilly or uneven terrain puts more strain on the battery and motor, which can lead to power loss. If you ride on steep inclines or rough surfaces, your e-bike may require more energy, causing a sudden power reduction. Ensure your e-bike's battery and motor are designed to handle the terrain you frequently ride on.

 

Human Factors

● Riding Style: Your riding style can significantly impact your e-bike's power. Aggressive acceleration and frequent braking can strain the motor, leading to a temporary loss of power. Adopt a smooth and consistent riding style to maintain your e-bike's performance and avoid unexpected power loss.


● Ergonomics: Improper bike adjustments can result in inefficient power usage. Ensuring that your e-bike's saddle height, handlebar position, and suspension settings are correctly adjusted can help make your ride more efficient, reducing the likelihood of a sudden power loss.


● Weight Load: Carrying heavy loads or towing trailers can cause your e-bike's motor and battery to work harder, potentially leading to a sudden power loss. Be mindful of your e-bike's maximum weight capacity and try to distribute the load evenly to minimize the impact on your e-bike's performance.

 

 

Maintenance Tips

To prevent your electric bike from suddenly losing power while riding, it's essential to keep up with regular maintenance. By taking care of the various components, you can ensure a smooth and efficient ride while extending the lifespan of your e-bike. Below are some maintenance tips categorized into three subsections:

 

Regular Battery Care

 

● Charge regularly: To maintain optimal battery life and performance, it's important to charge your e-bike battery regularly according to the manufacturer's recommendations.


● Storage conditions: Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures.


● Avoid overcharging: While it's necessary to regularly charge your battery, avoid overcharging it to prevent damage or decreased battery life.


● Proper discharging: Refrain from frequently draining your battery to 0%. Recharge as soon as possible, and occasionally charge to to calibrate the cells.

 

Proper Wiring Maintenance

● Inspect connections: Regularly check the wiring connections of your e-bike, ensuring that all wires are securely fitted and free from wear or damage.


● Clean connectors: Keep the connectors clean by gently removing any dirt or debris using a soft brush or cloth.


● Tighten loose wiring: If you detect any loose wiring, make sure to safely tighten it to prevent disconnections or poor electric transfer.

 

Motor and Controller Servicing

 

Regular check-ups: Schedule periodic check-ups for your e-bike's motor and controller to ensure optimal performance.


Clean and lubricate: Keep the motor clean by wiping down the exterior with a soft cloth, and maintain proper lubrication of the moving parts using the recommended lubricant.


Inspect for wear: Check for any signs of wear or damage to the motor and controller, and if needed, replace any defective components with original parts from the manufacturer.


Regarding the causes of sudden power loss in electric bikes, MOTOPAI offers thoughtful circuit testing services for our customers. Please feel free to visit a designated dealer or partner anytime for safety checks and maintenance.

Alen Zhang

GM of Overseas Department - WUXI OPAI ELECTRIC SCIENCE AND TECHNOLOGY GROUP CO.,LTD.

Tongji University MBA with more than 10 years of experience in the foreign trade of electric two-wheelers and more than 10 years of foreign trade experience in motorcycles. He has unique industry insights and has cultivated the foreign trade market of electric two-wheelers.

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