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brandibythebeach OP t1_jec5int wrote

Reply to comment by mkstot in Eli5 do car batteries do more than just start the car? by brandibythebeach

I'm hoping it's just the battery, but I realize it might be the alternator. I'm just wondering how batteries work, like if they're needed when the vehicle is running. If we get it started but it won't charge can I still drive?

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mkstot t1_jec6nxy wrote

Your alternator may not produce enough voltage to power your electrical system fully. In older cars this was ok because you didn’t have such a high demand for power unlike todays cars with power windows, steering, heated seats, cameras, etc. best err in the side of caution, and have the battery and the alternator tested at a parts store.

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