answersLogoWhite

0

No—charging a car battery in situ (while it’s still in the car) won’t damage the alternator if done properly.

The alternator isn’t active when the engine is off, so it’s not affected by a normal battery charger. Modern chargers also regulate voltage safely.

Just be careful to:

Use the correct voltage/charger type

Connect the clamps properly

Avoid cheap or faulty chargers that can spike voltage

Some people disconnect the battery for extra safety, but it’s usually not necessary.

What else can I help you with?