Battery Sizes

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meatsneakers

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Feb 3, 2011
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You can compare with just a ruler - the numbers correspond to the size in millimeters. An 18650 is 18mm wide and 65mm tall. A 18500 is 18mm wide and 50mm tall etc. Most brands are usually slightly larger in practice - the protection circuit will add a few mm in the height dimension:

VndN4.png


The average is 68mm but some deviate each way.
 
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