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Home › Can I swap? › SR721SW vs 362
Can I swap?

SR721SW vs 362: can you swap them?

1The short answer2Both ways3Differences4Buy it5Learn more
  1. 1

    The short answer

    YesYes, they’re the same batterySR721SW and 362 are two names for the exact same battery. Use either one.
    SR721SW+ 1.55V
    SR721SWAs thick as 3 credit cards stacked
    SR721SW+ 1.55V
    362As thick as 3 credit cards stacked
    Get SR721SW on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

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  2. 2

    Both ways round

    Can I put 362 where SR721SW goes?Yes
    Can I put SR721SW where 362 goes?Yes
  3. 3

    What’s different

    SR721SW362
    SizeAbout as wide as a peaAbout as wide as a pea Same
    ThicknessAs thick as 3 credit cards stackedAs thick as 3 credit cards stacked Same
    Power1.55 volts1.55 volts Same
    KindWatch batteryWatch battery

    Lasts longer: Same

  4. 4

    Where to buy SR721SW

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

    Our pickThe exact match, 4-packEnergizer SR721SW 1.55V Battery (4-Pack)
    Check Price on Amazon →
    Best value10-pack, handy to keep in a drawerSR721SW 1.55V Battery Value Pack (10-Pack)
    Check Price on Amazon →
    Other brandDuracell, the same batteryDuracell SR721SW / SR721SW 1.55V Battery
    Check Price on Amazon →

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

    Get 362 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.
  5. 5

    Learn more

    About SR721SWAbout 362Check another pair
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Questions people ask

Can I use 362 instead of SR721SW?

Yes. SR721SW and 362 are two names for the exact same battery. Use either one.

Can I use SR721SW instead of 362?

Yes. SR721SW and 362 are two names for the exact same battery. Use either one.

Which one lasts longer?

They last about the same.

All the numbers

SR721SW362
Diameter7.9 mm7.9 mm
Height2.1 mm2.1 mm
Nominal voltage1.55V1.55V
Typical capacity25 mAh25 mAh
ChemistrySilver oxideSilver oxide
Shelf life5 yrs5 yrs
Operating temp-10 to 60 °C-10 to 60 °C
Can I use 362 instead of SR721SW?Yes
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1The short answer2Both ways3Differences4Buy it5Learn more