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You should charge the battery after you jump it because a alternator is designed to maintain a battery, but not to bring one back that has been dead; it is simply hard on a alternator but you can get by; but why take the chance? I hope this helps you. Mark

before changing the battery check to see why it was discharged in the first place and have it tested it may just be something you left on like the interior light or some such

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Q: Should you change battery after you jump car?
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