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Home › Can I swap? › A23 vs A27
Can I swap?

A23 vs A27: can you swap them?

1The short answer2Both ways3Differences4Buy it5Learn more
  1. 1

    The short answer

    NoNo, they’re different sizesOne is wider than the other, so it won’t fit or won’t touch the contacts properly.
    A23
    A23Short and skinny, about 2.9 cm long
    A27
    A27Short and skinny, about 2.8 cm long
    Get A23 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

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  2. 2

    Both ways round

    Can I put A27 where A23 goes?No
    Can I put A23 where A27 goes?No
  3. 3

    What’s different

    A23A27
    SizeShort and skinny, about 2.9 cm longShort and skinny, about 2.8 cm long
    LengthShort and skinny, about 2.9 cm longShort and skinny, about 2.8 cm long
    Power12 volts12 volts Same
    Kind12-volt remote battery12-volt remote battery

    Lasts longer: A23 (about 150% longer)

  4. 4

    Where to buy A23

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

    Our pickThe exact match, 4-packEnergizer A23 12V Battery (4-Pack)
    Check Price on Amazon →
    Best value10-pack, handy to keep in a drawerA23 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.

    Get A27 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.
  5. 5

    Learn more

    About A23About A27Check another pair
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Questions people ask

Can I use A27 instead of A23?

No. One is wider than the other, so it won’t fit or won’t touch the contacts properly.

Can I use A23 instead of A27?

No. One is wider than the other, so it won’t fit or won’t touch the contacts properly.

Which one lasts longer?

A23 (about 150% longer).

All the numbers

A23A27
Diameter10.3 mm8.0 mm
Height28.5 mm28.2 mm
Nominal voltage12V12V
Typical capacity55 mAh22 mAh
ChemistryAlkaline (stacked cells)Alkaline (stacked cells)
Shelf life5 yrs5 yrs
Operating temp-10 to 50 °C-10 to 50 °C
Can I use A27 instead of A23?No
Get A23 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

Something wrong or missing? Tell us

1The short answer2Both ways3Differences4Buy it5Learn more