More serious issues like burning odors, loud noises from the motor, sudden loss of power, or complete failure to turn on likely indicate internal electrical problems. Immediately discontinue riding and do NOT attempt to operate scooters displaying these symptoms, as this risks further damage or personal harm.

It is best to have your e-scooter battery replaced by a mechanic. E-scooter owners may also do it themselves as long as they have the right tools and proceed carefully.

The battery pack Voltage with the power on and throttle fully engaged should not drop more than 1 to 2 Volts and should not drop to under scooter's rated Voltage. If the battery pack Voltage drops under scooter's rated Voltage during the load test then the battery pack has failed the load test and needs to be replaced.