Is it possible to test a watch battery, like the ones that look like a coin, with a voltmeter?
Md Ariful Islam
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Dr. Md Rushad Rahman
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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.
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