Sometimes the vehicle doesn't run, but other times it does. Vehicle constantly blows fuse. When the foot pedal is pushed, the vehicle will not run without a push. Batteries' thermal fuses constanly trip, but the vehicle is not overloaded or the driving conditions to severe. Loud cracking or grinding noises from the motor gearbox Charger gets warm during use.
Batteries make a sizzling or gurgling sound when charging.
Other problems not listed.