Can a Motorcycle Jump-Start a Car?

[SanEvan]

Motorcycles cannot jump-start cars as doing so may damage the motorcycle's battery. Reasons why it's not possible: Car batteries typically have a capacity of around 50AH, while motorcycle batteries only have about 7AH. Although the voltage is the same, the instantaneous current when starting a car can reach approximately 200A, far exceeding the capacity of a motorcycle battery. This puts significant strain on the motorcycle battery, and after a few attempts, the battery may become depleted and eventually fail. It is recommended to use another car for jump-starting instead. Car batteries can jump-start motorcycles: The starting current of a car engine generally ranges from 200A to 400A or more, while a motorcycle engine's starting current is around 30A to 50A. The capacity and starting current output of their respective batteries differ: car batteries have a larger capacity and higher starting current output, whereas motorcycle batteries have a smaller capacity and lower starting current output. Therefore, a car battery can be used to jump-start a motorcycle, but a motorcycle battery cannot start a car. Otherwise, the high starting current could damage the motorcycle battery's plates, rendering it useless.