Coin Cell Dimensional Tolerance and Battery Holders
Published on Apr 10, 2015
Competing brands of batteries can have substantially different dimensional specs. Where this dimensional tolerance has an impact is in the battery holder. A coin cell holder must be designed so it can handle normal height variances while at the same time, not accept batteries of a different type. Obviously, the battery holder can’t have a connection that’s too loose, because that would cause reliability issues. So if the user of the device can purchase replacement cells, the coin cell holder has to handle the full range of dimensions.