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Home › Can I swap? › SR626SW vs SR66
Can I swap?

SR626SW vs SR66: can you swap them?

1The short answer2Both ways3Differences4Buy it5Learn more
  1. 1

    The short answer

    YesYes, they’re the same batterySR626SW and SR66 are two names for the exact same battery. Use either one.
    SR626SW+ 1.55V
    SR626SWAs thick as 3 credit cards stacked
    SR626SW+ 1.55V
    SR66As thick as 3 credit cards stacked
    Get SR626SW on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

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  2. 2

    Both ways round

    Can I put SR66 where SR626SW goes?Yes
    Can I put SR626SW where SR66 goes?Yes
  3. 3

    What’s different

    SR626SWSR66
    SizeAbout as wide as a pencil eraserAbout as wide as a pencil eraser 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 SR626SW

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

    Our pickThe exact match, 4-packEnergizer SR626SW 1.55V Battery (4-Pack)
    Check Price on Amazon →
    Best value10-pack, handy to keep in a drawerSR626SW 1.55V Battery Value Pack (10-Pack)
    Check Price on Amazon →
    Other brandDuracell D377, the same batteryDuracell D377 / SR626SW 1.55V Battery
    Check Price on Amazon →

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

    Get SR66 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.
  5. 5

    Learn more

    About SR626SWAbout SR66Check another pair
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Questions people ask

Can I use SR66 instead of SR626SW?

Yes. SR626SW and SR66 are two names for the exact same battery. Use either one.

Can I use SR626SW instead of SR66?

Yes. SR626SW and SR66 are two names for the exact same battery. Use either one.

Which one lasts longer?

They last about the same.

All the numbers

SR626SWSR66
Diameter6.8 mm6.8 mm
Height2.6 mm2.6 mm
Nominal voltage1.55V1.55V
Typical capacity28 mAh28 mAh
ChemistrySilver oxideSilver oxide
Shelf life5 yrs5 yrs
Operating temp-10 to 60 °C-10 to 60 °C
Can I use SR66 instead of SR626SW?Yes
Get SR626SW on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

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1The short answer2Both ways3Differences4Buy it5Learn more