Q&A for How to Test Your Batteries

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  • Question
    How can I test a 9-volt battery?
    Community Answer
    If you have a multimeter, you can try hooking it up to it. If not, a battery tester is probably the best solution.
  • Question
    Is it possible to test a watch battery, like the ones that look like a coin, with a voltmeter?
    Community Answer
    Yes. Use a multimeter set on DCV, place the red (positive) lead on the + side of the watch battery. Place the black (negative lead on the other side of the coin. You are looking for a reading at 3v. If the reading is 3 the battery should be good. If not, replace it.
  • Question
    Can I use the drop method on a carpet?
    Community Answer
    The natural "springiness" of a carpet would make it difficult to interpret the results of such a test. So in most cases it probably wouldn't work.
  • Question
    My galaxy A3 will not power on, and the battery won’t charge. What can I do to fix it?
    Millie12310
    Community Answer
    Take it to the store where you got it and they should be able to fix it. You may need a new phone battery.
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