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Thread: Coin button battery finder - photo

  1. #1
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    I trust that this battery identification aid is made from a non conductive material to save draining the battery.

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    Jon
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    Nice. I need a magnifying glass to read the markings on some of the smaller watch batteries.

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    I believe M. Klotz pointed out numerical coding of button cell (coin) reveals the sizes in whole mm and divisions of, thickness first. Range is 5 to 25 millimeters in diameter and 1 to 6 millimeters in height.

    https://digilent.com/blog/quick-coin-battery-guide/



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