Maxell 377 SR626SW - Single Battery AG4 376/377

Product Description

Superior Renata Maxell Micro Silver Oxide SR626SW/SR626W One Battery 377/376

Do not use (inherently low performing) alkaline batteries in place of silver oxide in any timepiece. The reason why cheap China LR626 alkaline are not used in a watch is they can leak, they have low amount of energy stored, and have declining power out put; silver oxide chemistry has non declining power out put

Made in Japan or Made in Switzerland
Dimensions 6.8mm Diameter x 2.6mm Height
In blister pack or individual package
1.55 volts 27 mAh
Mercury Free
The 377 SR626SW is completely interchangeable with the 376 SR626W
This is a primary non rechargeable disposable battery

The 377/376 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 S32, Energizer 377/376, Energizer 376/377, Energizer MD377, Energizer MD376, UCAR 377/376, UCAR 376/377, UCAR MD377, UCAR MD376, Eveready 377/376, Eveready 376/377, Eveready MD377, Eveready MD376, Citizen 280-39, Gold Peak GP77, Sylva-cell GP77, Maxell SR626SW, Maxell SR626W, Panasonic SP377, Panasonic SR626SW, Panasonic SR626W, National SP377, National SR626SW, National SR626W, Rayovac 377, Rayovac 376, Rayovac RW329, Renata 377, Renata 377, Renata 37, Seiko SR/TR626SW, Seiko SR/TR626W, Sony 377, Sony 376, Sony SR626SW, Sony SR626W, Energytec 377, Energytec 376, Energytec SR626SW, Energytec SR626W, Toshiba SR626SW, Toshiba SR626W, Toshiba D2V, Varta V377, Varta 565