LR521 Battery – pack of ten. Can be used to replace SR521SW watch batteries. Commonly known as an SR63 and AG0 battery. See our full list of equivalent batteries below.
LR521 Battery Specifications:
- Diameter: 5.8mm
- Height: 2.1mm
- Voltage: 1.5V
- Capacity: 10mAh
- Operating Temperature: -18℃ to 55 ℃
- Chemistry: Alkaline
LR521 Cross Reference and Equivalent Batteries
- AG0, AG-0, LR521
- 379, 379A, 379X, 379LD, UC379, 379L, E379, D379, R 379, GP379, SP379, V379
- 521A, S521E
- 618, JA, RW 327
- SB-AC, SB-AC/DC
- 1191SO, 280-59
- SG-521S, SR 521 SW, SR521, SR521SW, SR63, SR63, SG0
With a low discharge rate of <1% per year equating to a 10+year shelf life with almost full capacity. LR521 datasheet. We have a full range of LR521 batteries with all major brands available.

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