Battery

LR626

1.5V alkaline button cell

LR626 is a 1.5V alkaline button cell (about 6.8 × 2.6 mm). AG4 and LR66 are common pack labels. SYLVI Specter and Vogue (analog side) on this site name LR626. SR626SW / 377 is the silver-oxide size twin — not an automatic swap. See LR626 vs SR626SW.

Chemistry: alkaline
Voltage: 1.5 V
Diameter: 6.8 mm
Thickness: 2.6 mm
Used by: 2 devices

Common uses: Low-cost gadgets · Toys

LR626 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.

AG4 · LR66 · G4A

Related codes

Same battery / other names

LR626AG4

Same battery

Same battery, different label.

LR626LR66

Same battery

Same battery, different label.

LR626G4-A

Same battery

Same battery, different label.

Same size, different battery

LR626SR626SW

Same size, different type

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

Size family

Edge thickness in the 6.8 mm family — thicker bar means thicker cell. Not to scale. Highlighted cell is this page.

1.65 mm

2.15 mm

2.15 mm

2.6 mm

2.6 mm

Device-specific caveats

From manufacturer-backed notes on devices that use LR626 — not generic advice.

Button cells are a choking hazard — keep new and used cells away from children.

Devices using LR626

All (2)Watches (2)SYLVI (2)

Used in

Watches2 devices

Brands: SYLVI

Compare

LR626 vs SR626SWCompare

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 LR626?

Search Amazon for packs of this battery code.

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