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Home › Can I swap? › SR527SW vs Size 5
Can I swap?

SR527SW vs Size 5: can you swap them?

1The short answer2Both ways3Differences4Buy it5Learn more
  1. 1

    The short answer

    NoNo, hearing aid batteries are differentThey’re the same size, but hearing aid batteries breathe air through tiny holes to work. Don’t mix them with ordinary button batteries.
    SR527SW+ 1.55V
    SR527SWAs thick as 4 credit cards stacked
    5STICKER
    Size 5As thick as 3 credit cards stacked
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  2. 2

    Both ways round

    Can I put Size 5 where SR527SW goes?No
    Can I put SR527SW where Size 5 goes?No
  3. 3

    What’s different

    SR527SWSize 5
    SizeAbout as wide as a pencil eraserAbout as wide as a pencil eraser Same
    ThicknessAs thick as 4 credit cards stackedAs thick as 3 credit cards stacked
    Power1.55 volts1.45 volts
    KindWatch batteryHearing aid battery

    Lasts longer: Size 5 (about 57% longer)

  4. 4

    Where to buy SR527SW

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

    Amazon searchEnergizer listings, any pack sizeSearch Amazon for Energizer 319
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    Amazon searchMulti-packs from any brandSearch Amazon for SR527SW multi-packs
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    Amazon searchDuracell D319 listings, the same batterySearch Amazon for Duracell D319
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    Buttons open amazon.com 🇺🇸, picked from your country.

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

    Learn more

    About SR527SWAbout Size 5Check another pair
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Questions people ask

Can I use Size 5 instead of SR527SW?

No. They’re the same size, but hearing aid batteries breathe air through tiny holes to work. Don’t mix them with ordinary button batteries.

Can I use SR527SW instead of Size 5?

No. They’re the same size, but hearing aid batteries breathe air through tiny holes to work. Don’t mix them with ordinary button batteries.

Which one lasts longer?

Size 5 (about 57% longer).

All the numbers

SR527SWSize 5
Diameter5.8 mm5.8 mm
Height2.7 mm2.5 mm
Nominal voltage1.55V1.45V
Typical capacity21 mAh33 mAh
ChemistrySilver oxideZinc-air
Shelf life5 yrs3 yrs
Operating temp-10 to 60 °C0 to 50 °C
Can I use Size 5 instead of SR527SW?No
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1The short answer2Both ways3Differences4Buy it5Learn more