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Home › Can I swap? › CR123A vs CR2/3A
Can I swap?

CR123A vs CR2/3A: can you swap them?

1The short answer2Both ways3Differences4Buy it5Learn more
  1. 1

    The short answer

    In a pinchCR2/3A can stand in for CR123A, but not the other way roundThey’re the same width and power, but CR2/3A is thinner. It may wobble a little and runs out about -7% sooner. CR123A is too thick to fit where CR2/3A goes.
    CR123A
    CR123AShort and chunky, about 3.5 cm long
    CR2/3A
    CR2/3AShort and chunky, about 3.4 cm long
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  2. 2

    Both ways round

    Can I put CR2/3A where CR123A goes?In a pinch
    Can I put CR123A where CR2/3A goes?No
  3. 3

    What’s different

    CR123ACR2/3A
    SizeShort and chunky, about 3.5 cm longShort and chunky, about 3.4 cm long Same
    LengthShort and chunky, about 3.5 cm longShort and chunky, about 3.4 cm long
    Power3 volts3 volts Same
    KindCamera & alarm batteryCamera & alarm battery

    Lasts longer: CR2/3A (about 7% longer)

  4. 4

    Where to buy CR123A

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    Amazon searchEnergizer listings, any pack sizeSearch Amazon for Energizer EL123AP
    See results on Amazon →
    Amazon searchMulti-packs from any brandSearch Amazon for CR123A multi-packs
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    Amazon searchDuracell DL123A listings, the same batterySearch Amazon for Duracell DL123A
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    Buttons open amazon.com 🇺🇸, picked from your country.

    Search Amazon for CR2/3AAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.
  5. 5

    Learn more

    About CR123AAbout CR2/3ACheck another pair
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Questions people ask

Can I use CR2/3A instead of CR123A?

In a pinch. They’re the same width and power, but CR2/3A is thinner. It may wobble a little and runs out about -7% sooner. CR123A is too thick to fit where CR2/3A goes.

Can I use CR123A instead of CR2/3A?

No. They’re the same width and power, but CR2/3A is thinner. It may wobble a little and runs out about -7% sooner. CR123A is too thick to fit where CR2/3A goes.

Which one lasts longer?

CR2/3A (about 7% longer).

All the numbers

CR123ACR2/3A
Diameter17.0 mm17.0 mm
Height34.5 mm33.5 mm
Nominal voltage3.0V3.0V
Typical capacity1500 mAh1600 mAh
ChemistryLithium manganese dioxideLithium manganese dioxide
Shelf life10 yrs10 yrs
Operating temp-40 to 60 °C-40 to 60 °C
Can I use CR2/3A instead of CR123A?In a pinch
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1The short answer2Both ways3Differences4Buy it5Learn more