LR44 vs AG13

AG13 is the generic designation for the alkaline LR44 — the same 11.6 × 5.4 mm cell at 1.5 V and 110–130 mAh.

Quick answer

Same battery, two names. LR44 is the international standard code for this alkaline button cell; AG13 is the generic number used mostly on budget and unbranded multipacks. Same 1.5 volts, same 11.6 × 5.4 mm, same chemistry. They swap freely.

Verdict:: The same cell — AG13 is the generic code for an LR44
Interchangeable:: yes — the same cell under two codes

Side-by-side specifications

LR44 compared with AG13
Specification	LR44	AG13
Chemistry	Alkaline	Alkaline
Type	Button Cell	Button Cell
Nominal voltage	1.5 V	1.5 V
Diameter	11.6 mm	11.6 mm
Height	5.4 mm	5.4 mm
Typical capacity	110–130 mAh	110–130 mAh
Rechargeable	No	No
Also sold as	AG13, A76, L1154, 157	LR44, A76, L1154, 357A

Size comparison

LR44

Ø 11.6 mm · H 5.4 mm

AG13

Ø 11.6 mm · H 5.4 mm

Both cells share an identical 11.6 × 5.4 mm footprint, so physical fit is not the deciding factor here.

Why two codes exist

LR44 is the IEC standard name: L for alkaline, R for round. AG13 comes from the generic numbering used across low-cost manufacturing, where AG simply counts button cell sizes upward.

What actually differs

Brand and quality control, not specification. AG-coded cells are typically unbranded imports sold in strips, and both capacity within the 110–130 mAh band and shelf life vary more than they would between named brands.

Not the silver oxide one

AG13 is alkaline at 1.5 V. The silver oxide cell in the same shell is the SR44 or 357 at 1.55 V — a different cell, not another name for this one.

Can I use a AG13 instead of a LR44?

Yes. The LR44 and the AG13 are the same cell — 11.6 × 5.4 mm, 1.5 V, alkaline. The two codes come from different naming schemes, not from different batteries, so whichever you find on the shelf will work.

LR44 specs →AG13 specs →

Check before you swap. Batteries with similar dimensions are not always interchangeable. Always verify voltage, chemistry and the requirements printed in your device manual before fitting a replacement.

Related comparisons

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