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Battery

SR41

1.55V silver oxide button cell

SR41SW is a pack label for SR41 — same battery, different name on the package.

Chemistry: silver_oxide
Voltage: 1.55 V
Diameter: 7.9 mm
Thickness: 3.6 mm
Used by: 2 devices

Common uses: Watches · Instruments

SR41 Diagram

Brand-neutral outline — confirm the tray in your device.

Other names

Genuine aliases and pack labels for this battery — not substitutes of a different chemistry.

392 · 384 · SR41SW · SR41W · D392 · V392

Related codes

Same battery / other names

Same battery

Same battery, different label.

Same battery

Same battery, different label.

SR41D392

Same battery

Same battery, different label.

SR41V392

Same battery

Same battery, different label.

SR41SR41W

Same battery

Same battery, different label.

SR41SR41SW

Same battery

Same battery, different label.

Same size, different battery

Same size, different type

Fits the same slot. Different type — check the manual.

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

Edge thickness in the 7.9 mm family — thicker bar means thicker cell. Not to scale. Highlighted cell is this page.

3.6 mm

3.6 mm

3.6 mm

5.4 mm

Device-specific caveats

From manufacturer-backed notes on devices that use SR41 — not generic advice.

Medical device: button-cell swallowing hazard — keep cells away from children.

Devices using SR41

2

All (2)Styluses & pens (1)Health meters (1)

Used in

Styluses & pens1 device Health meters1 device

Compare

SR41 vs LR41Compare

Learn more

Testers & chargers

Optional tools that fit this cell type — only where the chemistry allows. Separate from the battery answer.

Amazon links may earn us a commission. They do not change the battery answer.

Coin cell / button cell battery tester
Quick check of CR / LR / SR button and coin cells before fitting
Buy on Amazon More tools
ZTS Mini-MBT Multi-Battery Tester
More informative state-of-charge style checks across common formats
Docs Buy on Amazon More tools
BT-168D-class digital battery tester
Budget household go/no-go checks
Buy on Amazon More tools

Coin / button cell tester
Quick check for CR / LR / SR coin cells
Open-circuit voltage alone does not prove remaining capacity.
How to test a coin cell Buy on Amazon

Buy links are optional and separate from the battery answer.

Need one?

Need a SR41?

Search Amazon for packs of this battery code.

Buy on Amazon Amazon UK

Buy links go to Amazon (Associates where tagged) or other affiliate programmes when available. They never change the battery answer.