Superior Maxell 363 SR621W Micro Silver Oxide completely interchangeable with SR621SW 364
Superior Maxell Micro Silver Oxide SR621W/SR621SW One Battery
Do not use (inherently low performing) alkaline batteries in place of silver oxide in any timepiece.
Made in Japan
There is no battery SR826W: a dyslexic typo
Genuine Maxell Hologram Anti-Counterfeit Packaging (other package is not genuine)
Dimensions 6.8mm Diameter x 2.1mm Height
1.55 volts 18 mAh
This is a primary non rechargeable disposable battery
The 363/364 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 cannot give the correct time.
Fits and Replaces:
This is from the American Watchmakers-Clockmakers Institute 2008 Edition Handbook "Battery Number System". This Battery is cross-referenced as: AWCI S14, Energizer 364/363, Energizer 363/364, Energizer MD364, Energizer MD363, Union Carbide 363, Union Carbide 364, Union Carbide 363/364, Union Carbide 364/363, UCAR 364/363, UCAR 363/364, UCAR MD364, UCAR MD363, Eveready 364/363, Eveready 363/364, Eveready MD364, Eveready MD363, Citizen 280-34, Duracell D364, Duracell D363, Mallory D364, Mallory D363, Gold Peak GP64, Sylva-Cell GP64, Maxell SR621SW, Maxell SR621W, Panasonic SP364, Panasonic SP363, Panasonic SR621SW, Panasonic SR621W, National SP364, National SP363, National SR621SW, National SR621W, Rayovac 364, Rayovac 363, Rayovac RW320, Renata 364, Renata 363, Renata 51, Renata 31, Seiko TR621SW, Seiko SR/TR621W, Seiko SR/TR621SW, Seiko SB-DG, Seiko SB-AG, Sony SR621SW, Sony SR621W, Sony 364, Sony 363, Timex T Cell, Toshiba SR621SW, Toshiba SR621W, Toshiba W1V, Toshiba D1V, Varta V364, Varta V363, Varta 531, there is NO SR821SW a misreading of SR621SW
Maxell 363/364 Maxell SR621W SR621SW - Box of 100. 20 Strips of 5 Batteries
Maxell 363/364 SR621SW SR621W - 3 Packs of 5 Batteries
Maxell 363/364 SR621W SR621SW - 1 Pack of 5 Batteries
Maxell 363/364 SR621W SR621SW - 2 Packs of 5 Batteries
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