Energizer silver oxide button cells energizer 637332 the energizer sr59 397 396 is a silver oxide button cell battery with zero mercury it has an average output capacity of 32mah a variety of watches toys calculators and other devices use this batterythis silver oxide battery can be used as a replacement for the following batteries 280 28 396 397396 d396397 sb bl sr59 sr726sw and tr726sw energizer 637332 size sr59 silver oxide button cell