Pocok5 t1_jefef4t wrote on March 31, 2023 at 4:44 PM

Reply to comment by remarkablemayonaise in eli5: Why do seemingly all battery powered electronics need at least 2 batteries? by OneGuyJeff

> very specialised single use.

You mean coin cells. CRxxxx coin cells are all single use Li-MnO2.

biggsteve81 t1_jegifwf wrote on March 31, 2023 at 9:09 PM

You can buy lithium AA and AAA cells from Energizer.

remarkablemayonaise t1_jeffktc wrote on March 31, 2023 at 4:51 PM

Fairly expensive in terms of energy density. The alternative are silver based. If you're using a watch for a year or two it shouldn't make much difference.