The battery voltage of a newly bought electric bicycle drops very quickly after only a short time of use. What causes this?

1. The fault symptom

First let us look at the typical case of a battery voltage drop that is too fast: a new battery is installed on the electric bicycle, and the moment the vehicle starts, the voltage falls very rapidly.

2. Checking and handling the excessive voltage drop

1) First check whether the voltage shown on the meter is consistent with the battery capacity. If the voltage shown on the meter does not match the battery capacity, ask the manufacturer or the sales staff to adjust it.

2) Check whether the battery connection wires are reliable and whether there is any short circuit or loose connection. If so, eliminate the problem.

3) Check whether the starting and running current of the electric vehicle is too large. If it is too large, adjust the current-limit value of the controller or inspect and repair the motor.

4) Check whether the battery capacity is on the low side. If it is low, carry out charging and discharging cycles on the battery.