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Car batteries get re-charged by the alternator. If your battery recently went dead, "miles" is not what is measured to recharge the battery, "time" is used.

I'd leave the car running for 15-30 minutes. Driving for this amount of time too is fine.

If the battery goes dead again, probably a bad battery or bad alternator, or sometimes a bad alternator makes the battery go bad and they both need repaired.

(typically a new alternator is $120 - $200)

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16y ago

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