Q&A for How to Remove Car Battery Terminals

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  • Question
    Is there always a clamp holding the old battery in place?
    Community Answer
    Not necessarily. There is usually some mechanism keeping the battery fastened, but this comes in many different forms.
  • Question
    How do I remove a battery terminal cover that is stuck on? I have tried a screwdriver, WD-40, a rag with hot water, and a hammer.
    Community Answer
    You could just get a pair of pliers and carefully cut it off. Just make sure not to cut the battery cable off too!
  • Question
    What should I do if I cannot remove the positive terminal because the nut will not budge, even after repeated applications of WD40?
    Community Answer
    Use a lever on the wrench if you have enough space. Put the wrench on the nut. Put a steel pipe over the wrench; the longer the pipe, the more force will be produced. Grab the end of the pipe and push it to loosen the nut. If that won't work, then it's time to bring out the angle grinder.
  • Question
    How do I change the wire for the negative terminal cable?
    David Cornell
    Community Answer
    I would suggest having a professional do that for you, since messing it up could make for a really big paperweight (irreparably dead car).
  • Question
    What will happen to the car battery if you just take off the positive charge and not the negative? Will this drain the battery?
    Community Answer
    Disconnecting the positive first could cause sparks or injury. This is why the negative should be disconnected first.
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