Battery
SR1130
1.55V silver oxide button cell
390 is a pack label for SR1130 — same battery, different name on the package.

SR1130 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
- Button cells are a choking hazard — keep new and used cells away from children.
Devices using SR1130
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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