Can the battery be charged when the car is idling?

[DiBriella]

Yes, the battery can be charged when the car is idling. In fact, even though the engine speed is low during idling, it still drives the alternator, which outputs a stable DC voltage. Therefore, the car battery is still being charged during idling, but the charging power is relatively small, so the charging speed will be slower compared to when driving at high speeds. A battery is a device that directly converts chemical energy into electrical energy. It is designed to be rechargeable, achieving recharging through reversible chemical reactions. Typically, this refers to lead-acid batteries, which are a type of battery and belong to the category of secondary batteries.