Battery
SR621SW
1.55V silver oxide button cell
D364 is a pack label for SR621SW — same battery, different name on the package.
SR621SW Diagram
Other names
Related codes
Same battery / other names
Rechargeables are not equivalents
Do not substitute a rechargeable cell unless the device documentation explicitly allows it. Silver-oxide and lookalike chemistries are not interchangeable with rechargeables by size alone.
Size family
Device-specific caveats
- Eco-Drive and other rechargeable cells (MT*, CTL*, SLB*, …) are excluded from this disposable CR/SR publish set.
Devices using SR621SW
- Casio EF-305
- Seiko SUR609 (Cal. 6N01)
- Seiko SUR609
- Seiko Cal. 7N01
- Seiko Cal. 7N89
- Seiko Cal. 7N85
- Seiko Cal. 6N76
- Seiko Cal. 2A22
- Seiko SUR549
- Seiko SUR611
- Citizen AG8300-52L
- Citizen BF5002-99P
- Citizen BI5000-01A
- Citizen BI5050-54E
- Citizen EQ0540-57A (Cal. 1002)
- Citizen Cal. 1502
- Citizen AG8300-52L (Cal. 6329)
- Citizen EU6010-53E (Cal. G012)
- Citizen BF5002-99P (Cal. G102)
- Citizen BI5000-01A (Cal. G112)
- Citizen EQ0540-57A
- Citizen EU6010-53E
- Orient Cal. HE7
- Orient Cal. VT821
Used in
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Testers & chargers
Optional tools that fit this cell type — only where the chemistry allows. Separate from the battery answer.
- Coin cell / button cell battery tester
Quick check of CR / LR / SR button and coin cells before fitting
- ZTS Mini-MBT Multi-Battery Tester
More informative state-of-charge style checks across common formats
- BT-168D-class digital battery tester
Budget household go/no-go checks
- Coin / button cell tester
Quick check for CR / LR / SR coin cells