Maxell 348 SR421SW

The 348, or SR421SW, is a popular Silver-Oxide cell commonly used in watches, with a shelf life of 5+ years. Other applications may include calculators, film cameras, medical instruments, cash registers, or FA Instruments (Measuring Instruments, Onboard Microcomputers, Sensors).

This is a “SW” low drain battery. Low drain batteries are best used in devices that use a small amount of power over a long period of time: Analog watches, TV remotes, alarm clocks, etc. This is in comparison to high drain batteries, which are for devices with a continuous, low power use and occasional high peaks: Analog and digital watches with extra functions (backlight, alarm), pocket calculators, electronic games, cameras, etc.
Specifications

Chemistry: Silver Oxide
Voltage: 1.55V
Capacity: 12mAh
Diameter: 4.8 mm
Height: 2.15 mm
Includes 100 Batteries

Features

Low Drain Type – Best used with analog watches
A flat discharge curve during discharge supplies a stable voltage until the end of the discharge life
High-energy density per unit volume provides 2x the amount of energy capacity as button-type alkaline batteries
Featuring Maxell’s original leak-resistant processing

Also Known As: 280-77, 348, SB-A6, SR421, SR421SW, V348, GP348, V348