LR55 / LR1120 battery equivalent
Also sold as LR1120. 1.5 V that sags as it drains. Fine for toys and lights; a poor watch substitute.
Equivalents by brand
| Brand | Number |
|---|---|
| Energizer / Eveready | 191 |
| Maxell / Panasonic / Sony | LR1120 |
| Varta | V8GA |
| Duracell | LR55 |
| IEC | LR55 |
| IEC size | LR1120 |
Also known as
What it fits
Small electronics. Prefer 381/391 silver oxide in watches.. Confirm the printed number or measure the old cell before you buy — a 0.5 mm height difference will not seat correctly.
IEC names encode chemistry and size. SR is silver oxide, LR is alkaline, and CR is 3 V lithium. The digits are diameter and height in tenths of a millimeter, so LR1120 is about 11.6 mm across and 2.1 mm thick.
Same size, different chemistry
These fit the same cavity but are not true equivalents. Voltage and discharge curve differ — do not use them as a silent swap in a quartz watch.
FAQ
What battery replaces a LR55?
Any of these are common equivalents: LR55, 191, LR1120, V8GA, AG8. They are 1.5 V alkaline cells, 11.6 × 2.1 mm.
Is LR55 the same as LR1120?
Yes — LR1120 is the IEC / Japanese-brand name for the same LR55 cell.
What devices use a LR55?
Small electronics. Prefer 381/391 silver oxide in watches.