Will turning on the air conditioning while starting the engine drain the battery?

1 Answers
Mandy
07/30/25 9:49am
Turning on the air conditioning while starting the engine will not drain the battery. The battery's response before and after the car starts: 1. When the car is not started. The compressor does not work and cannot cool, only the fan is running. At this time, the car battery can support it for a long time. This is also to prevent damage to the battery when the compressor is working. Do not turn on the air conditioning when the engine is not started, because before the generator starts, the car's electrical appliances are powered by the battery. 2. After the car starts. The electrical energy is provided by the car's generator, and the air conditioning compressor will work and start cooling. At this time, the generator will also charge the battery. After starting, the battery is only charged and not used, as all power is supplied by the generator, so it does not consume the battery's power.
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