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Home › Can I swap? › CR2040 vs BR2016
Can I swap?

CR2040 vs BR2016: can you swap them?

1The short answer2Both ways3Differences4Buy it5Learn more
  1. 1

    The short answer

    In a pinchBR2016 can stand in for CR2040, but not the other way roundThey’re the same width and power, but BR2016 is thinner. It may wobble a little and runs out about 73% sooner. CR2040 is too thick to fit where BR2016 goes.
    CR2040+ 3V
    CR2040As thick as 5 credit cards stacked
    BR2016+ 3V
    BR2016As thick as 2 credit cards stacked
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  2. 2

    Both ways round

    Can I put BR2016 where CR2040 goes?In a pinch
    Can I put CR2040 where BR2016 goes?No
  3. 3

    What’s different

    CR2040BR2016
    SizeAbout the size of a nickelAbout the size of a nickel Same
    ThicknessAs thick as 5 credit cards stackedAs thick as 2 credit cards stacked
    Power3 volts3 volts Same
    KindCoin batteryCoin battery

    Lasts longer: CR2040 (about 273% longer)

  4. 4

    Where to buy CR2040

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

    Amazon searchEnergizer listings, any pack sizeSearch Amazon for Energizer ECR2040
    See results on Amazon →
    Amazon searchMulti-packs from any brandSearch Amazon for CR2040 multi-packs
    See results on Amazon →
    Amazon searchDuracell DL2040 listings, the same batterySearch Amazon for Duracell DL2040
    See results on Amazon →

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

    Search Amazon for BR2016As an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.
  5. 5

    Learn more

    About CR2040About BR2016Check another pair
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Questions people ask

Can I use BR2016 instead of CR2040?

In a pinch. They’re the same width and power, but BR2016 is thinner. It may wobble a little and runs out about 73% sooner. CR2040 is too thick to fit where BR2016 goes.

Can I use CR2040 instead of BR2016?

No. They’re the same width and power, but BR2016 is thinner. It may wobble a little and runs out about 73% sooner. CR2040 is too thick to fit where BR2016 goes.

Which one lasts longer?

CR2040 (about 273% longer).

All the numbers

CR2040BR2016
Diameter20.0 mm20.0 mm
Height4.0 mm1.6 mm
Nominal voltage3.0V3.0V
Typical capacity280 mAh75 mAh
ChemistryLithium manganese dioxideLithium carbon monofluoride
Shelf life10 yrs10 yrs
Operating temp-30 to 60 °C-30 to 85 °C
Can I use BR2016 instead of CR2040?In a pinch
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1The short answer2Both ways3Differences4Buy it5Learn more