Maxell 397 SR726SW 1.55V Silver Oxide Battery

Maxell 397 SR726SW 1 Battery BOGO BOGO Buy one get one free! Please keep these and all shiny child-attracting small batteries out of the reach of children; batteries are dangerous if swallowed.   Dimensions 7.9mm Diameter x 2.6mm Height Please click here for a great price on 100! Do not use (inherently low performing) "LR" alkaline batteries in place of silver oxide in any timepiece: alkaline batteries have declining power output. Made in Japan Genuine Maxell Hologram Anti-Counterfeit Packaging (other package is not genuine) 1.55 volts 33mAh Mercury Free This is a primary non rechargeable disposable battery The 397 is a long life silver oxide chemistry with non-declining power output; alkaline batteries of the same 1.5 voltage start at 1.5 and at the half life are at .8 volts, silver oxide start at 1.55 volts and maintain the voltage until expiring. This is why silver oxide batteries are always used in watches, insulin pumps and sniper scopes or mission critical situations. Never use alkaline batteries for any device requiring a steady constant voltage. A watch with declining voltage may prove undependable. Dealers have my permission to use this copyright research at no charge if you acknowledge "from Bob" as the source. You will have access to my ongoing updated material corrections and updates with new information. This is from the American Watchmakers-Clockmakers Institute 2008 Edition Handbook "Battery Number System". This Battery is cross-referenced as: AWCI S17: Energizer 397/396, Energizer 396/397, Energizer MD396, Energizer MD397, Union Carbide 396, Union Carbide 397, Union Carbide 396/397, Union Carbide 397/396, UCAR 397/396, UCAR 396/397, UCAR MD396, UCAR MD397, Eveready 397/396, Eveready 396/397, Eveready MD396, Eveready MD397, Citizen 280-52, Duracell D396/D397, Duracell D397/396, Duracell 10R102, Mallory D396/D397, Mallory D397/396, Mallory 10R102, Gold Pe