How long does it take to fully charge a car battery at idle speed?
1 Answers
It takes about 20 minutes of idling to fully charge a car battery. Precautions for charging at idle speed include: 1. Check whether the charger is dual-purpose for 12V and 24V. If not, a 24V charger cannot be used; 2. For water-added batteries, the cover needs to be opened during charging, while maintenance-free batteries can be charged directly. Idle speed overcomes the engine's own operating resistance, maintains engine speed, and makes it more convenient for drivers during driving and temporary parking. The functions of a car battery include: 1. Providing power for the car's starter and ignition system; 2. Providing a stable DC power source for car electrical appliances.