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MAXELL 348 SR421SW - 1 Battery Official OEM


SKU: 101022
MAXELL 348 SR421SW - 1 Battery Official OEM

Price: $4.35

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Item Specifications
# of Units:1
Unit Cost:4.35
Weight:0.0020 lbs.
Voltage:1.55V
Capacity:12
Chemistry:Silver Oxide
Brand:MAXELL
Mfg. #:SR421SW

Product Description

Superior Maxell 348 SR421SW Micro Silver Oxide

Superior Maxell Micro Silver Oxide SR421SW One Battery Official 348

Do not use (inherently low performing) alkaline batteries in place of silver oxide in any timepiece.

Made in Japan
Genuine Maxell Hologram Anti-Counterfeit Packaging (other package is not genuine)
Dimensions 4.8mm Diameter x 2.1mm Height
1.55 volts 12 mAh
Mercury Free
This is a primary non rechargeable disposable battery

The 348 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 S72, Energizer 348, UCAR 348, Union Carbide 348, Eveready 348, Interstate Batteries AWAC5090, Maxell SR421SW, Panasonic SR421SW, National SR421SW, Seiko SR421SW, Seiko SB-A6, Toshiba SR421SW


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This battery will fit the following Watches and Devices:
ManufacturerModel NumberNotes
PulsarY151
PulsarY151A
Seiko1F21
Seiko2J30
Seiko2J30
Seiko2J41
Seiko2J80
Seiko2J80
Sportline Pedometer4144
TimexM Cell
Whittnauer Ladies Astor Watch11P06


MAXELL 379 SR521SW - Box of 100 Batteries. 20 Strips of 5 Batteries $87.00 LR44 Maxell (Replaces A76 or PX76A) - Box of 200 Batteries $120.00 MAXELL 344 SR1136SW - 100 Batteries 20 strips of 5 Batteries $165.00 MAXELL 315 SR716SW - 100 Batteries 20 Strips of 5 Batteries $103.73

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