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Comparison

SR41 vs LR41

Same size (≈7.9 × 3.6 mm) but different chemistry — SR41 is silver oxide (392 / 384); LR41 is alkaline (AG3 / 192). Not automatic equivalents.

At a glance

QuestionAnswer
Same battery?No — see chemistry and size below
Same dimensions?Yes
Same chemistry?No — do not swap by size alone
Same voltage?Check each code
Direct substitute?Only if the device documentation names that exact code

Same size, different chemistry

Both are about 7.9 × 3.6 mm. LR41 alkaline is also AG3 / 192 — LEGO light bricks on this site use two LR41 cells.

SR41 silver oxide is also 392 / 384. Meters and tools that name SR41 / 392 want the flatter silver-oxide curve; some OEM manuals allow either (read the quote).

Do not use list

Do not treat 392 / SR41 as an LR41 / AG3 equivalent without checking the device.

Do not assume a LEGO LR41 answer applies to an SR41-named thermometer or stylus.

Codes compared

LabelResolves toTypeSize
SR41SR411.55V silver oxide button cell7.9 × 3.6 mm
LR41LR411.5V alkaline button cell7.9 × 3.6 mm

Device counts: SR41 (2) · LR41 (3)

How these codes relate

Same battery, pack labels, or same size with a different type — not a generic “compatible with” list.

From SR41

SR41LR41

Same size, different type

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

From LR41

LR41SR41

Same size, different type

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

Open a battery page

SR41 →LR41 →Compare any two →

Shop the code your device names — not a size twin.

Need a SR41?

Search Amazon for packs of this battery code.

Buy on AmazonAmazon UK

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

Need a LR41?

Search Amazon for packs of this battery code.

Buy on AmazonAmazon UK

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