Battery

A27

12V alkaline cell

MN27 is a pack label for A27 — same battery, different name on the package.

Common uses: Remotes

A27 Diagram

Brand-neutral outline — confirm the tray in your device.

Genuine aliases and pack labels for this battery — not substitutes of a different chemistry.

Same battery / other names

A27MN27

Also sold as

Brand or pack name for the same battery.

A278LR732

Same battery

Same battery, different label.

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.

Battery tester
Quick good / low / dead check for household cells
Crude check only — does not measure capacity under realistic load.
How to test a battery Buy on Amazon
Battery storage / organiser
Keep spare cells sorted and prevent coin-cell shorts
Keep coin cells away from children.
Buy on Amazon

Buy links are optional and separate from the battery answer.

Search Amazon for packs of this battery code.

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

CompuStar CM1000-K (R150) / 1BAMR: 1× 27A (OEM RF-150R). Thinner than A23; not a phone battery.