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Home › Batteries › MN21
12-volt remote battery

MN21 is the same as A23

1What it is2Other names3Facts4Buy it5Things6Swaps
  1. 1

    What it is

    A23

    MN21 is just another name for A23. Same battery, different label, so you can buy either one.

    Get A23 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

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  2. 2

    Names you might see in the store

    All of these are the same battery. Any of them will work.

    A238LR93223AV23GALRV08
  3. 3

    Quick facts

    Size
    Short and skinny, about 2.9 cm long
    Power
    12 volts
    Keeps in a drawer for
    About 5 years
    Rechargeable?
    No, use once
    Found in things like
    Garage door remotesCar alarmsWireless doorbells
  4. 4

    Where to buy it

    As an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

    Our pickThe exact match, 4-packEnergizer MN21 (A23) 12V Battery (4-Pack)
    Check Price on Amazon →
    Best value10-pack, handy to keep in a drawerMN21 (A23) 12V Battery Value Pack (10-Pack)
    Check Price on Amazon →
    Other brandDuracell MN21, the same batteryDuracell MN21 / A23 12V Battery
    Check Price on Amazon →

    Buttons open amazon.com 🇺🇸, picked from your country.

  5. 5

    Things that use A23

    Garage Door & Gate Remotes (A23)Takes A23›
  6. 6

    Can I use something else?

    Can I use A27 instead of A23?No
Show more details (optional)

See it at real size

A23 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

A23US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read MN21:

MN21Duracell Proprietary for this cell
A23Physical cell: 10.3 × 28.5 mm, 12V alkaline high-v

The same battery from each brand

BrandTheir name for it
Official name8LR932
Shop nameA23
EnergizerA23
DuracellMN21
VartaV23GA
MaxellLRV08

Exact measurements

Width
10.3 mm (0.406 in)
Length
28.5 mm
Voltage
12V (empty at 6.0V)
Energy stored
55 mAh
Weight
8 g
Made with
Alkaline (stacked cells)
Works between
-10 … 50 °C
Official code
8LR932

Questions people ask

Is MN21 the same as A23?

Yes. They’re the same battery with different names. You might also see A23, 8LR932, 23A, V23GA.

How long will a spare keep in a drawer?

About 5 years if it stays cool and dry.

Can I recharge it?

No. Never try to recharge it.

A23
A2312-volt remote battery
Get A23 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

Something wrong or missing? Tell us

1What it is2Other names3Facts4Buy it5Things6Swaps