BatteryByDevice
Back to searchSearch

Battery

LR621

1.5V alkaline button cell

LR621 is a thin 1.5V alkaline button cell (about 6.8 × 2.15 mm). AG1 and LR60 are common pack labels. SYLVI Elegare and Bella on this site name LR621. SR621SW / 364 is the silver-oxide size twin — not an automatic swap. See LR621 vs SR621SW.

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

Common uses: Low-cost thin cells

LR621 battery reference render

LR621 Diagram

LR621 orthographic diagram with top, bottom or end views and side profile dimensions
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.

AG1 · LR60

Related codes

Same battery / other names

LR621AG1

Same battery

Same battery, different label.

LR621LR60

Same battery

Same battery, different label.

Same size, different battery

LR621SR621SW

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.

SR616SW
1.65 mm
SR621SW
2.15 mm
LR621
2.15 mm
SR626SW
2.6 mm
LR626
2.6 mm

Device-specific caveats

From manufacturer-backed notes on devices that use LR621 — not generic advice.

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

Devices using LR621

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

Used in

Watches2 devices

Brands: SYLVI

Compare

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.

Buy links are optional and separate from the battery answer.

Need one?

Need a LR621?

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.