The process then reverses, but with the electrons in the external circuit powering a device, such as an EV's electric motor.

然后该过程反转，但外部电路中的电子为设备（例如 EV 的电动机）供电。

An ideal battery provides a constant voltage to a circuit, powered by its conversion of stored chemical energy to electrical energy.

理想的电池为电路提供恒定电压，由存储的化学能转换为电能供电。