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Home › Can I swap? › F vs R25
Can I swap?

F vs R25: can you swap them?

1The short answer2Both ways3Differences4Buy it5Learn more
  1. 1

    The short answer

    UsuallyUsually, but check your deviceSame size and power, made a little differently. Fine for most everyday things.
    F
    FMuch bigger than an AA
    R25
    R25Much bigger than an AA
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  2. 2

    Both ways round

    Can I put R25 where F goes?Usually
    Can I put F where R25 goes?Usually
  3. 3

    What’s different

    FR25
    SizeMuch bigger than an AAMuch bigger than an AA Same
    LengthMuch bigger than an AAMuch bigger than an AA Same
    Power1.5 volts1.5 volts Same
    KindRegular batteryRegular battery

    Lasts longer: F (about 148% longer)

  4. 4

    Where to buy F

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    Amazon searchEnergizer listings, any pack sizeSearch Amazon for Energizer F
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    Amazon searchMulti-packs from any brandSearch Amazon for F multi-packs
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    Amazon searchDuracell listings, the same batterySearch Amazon for Duracell F
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  5. 5

    Learn more

    About FAbout R25Check another pair
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Questions people ask

Can I use R25 instead of F?

Usually. Same size and power, made a little differently. Fine for most everyday things.

Can I use F instead of R25?

Usually. Same size and power, made a little differently. Fine for most everyday things.

Which one lasts longer?

F (about 148% longer).

All the numbers

FR25
Diameter33.0 mm33.0 mm
Height91.0 mm91.0 mm
Nominal voltage1.5V1.5V
Typical capacity26000 mAh10500 mAh
ChemistryAlkalineCarbon-zinc
Shelf life5 yrs5 yrs
Operating temp-10 to 60 °C-10 to 60 °C
Can I use R25 instead of F?Usually
Search Amazon for FAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

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1The short answer2Both ways3Differences4Buy it5Learn more