Does jumping someones battery cause damage or weakness to your own battery?

My good samaritan fiance' insists that it does not and we are getting a THIRD new battery in the last 2 years hummmph!

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  • 1 decade ago
    Favorite Answer

    no not usually. but you might have a problem with your vehicle. first buy a good quality battery. then have a complete charging and starting system check. also check and make sure that one of your courtesy lights ( glovebox/trunk and so-on) arent staying on killing your battery. then go from there but if you have replaced that many batteries in such a short time, your either buying junk batteries or something is causing a problem

  • 1 decade ago

    Not if it's done properly. The car with the good battery should be running at a speed slightly higher than idle. Let the good car's alternator charge the dead battery for 5 - 10 minutes before trying to start the car with the dead battery.

  • 1 decade ago

    THe other answers above this one are all pretty good, but no one stressed the importance of making sure you have the right polarity of the cables.

    If you connect your positive (red) to the others negative (black) and his red to your black, you likely ruin your alternator and your day.

    Some cables have sensors for this but most don't. Just remember red to red.. black to black

    ok?

  • 1 decade ago

    its fine as long as you do it correctly . hook the cables to your battery, then hook the red to the pos. of the dead bat, then hook the black to grounding point on the dead car- not the bat ground post. this will isolate the dead cars battery and not send a spike in voltage back to your cars battery

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  • Anonymous
    1 decade ago

    no, but it can blow out the internal voltage regulator on our alternator

  • 1 decade ago

    NO IT WOULDN'T CAUSE PROBLEMS UNLESS YOU REVERSE THE POSITIVE OR NEGATIVE POSTS. IT COULD BLOW UP

    IF YOUR ACID LEVEL IS LOW IT MIGHT CAUSE PROBLEMS

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