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Home › Can I swap? › R6 vs FR6
Can I swap?

R6 vs FR6: 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.
    R6
    R6The same size as an AA
    FR6
    FR6The same size as an AA
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  2. 2

    Both ways round

    Can I put FR6 where R6 goes?Usually
    Can I put R6 where FR6 goes?Usually
  3. 3

    What’s different

    R6FR6
    SizeThe same size as an AAThe same size as an AA Same
    LengthThe same size as an AAThe same size as an AA Same
    Power1.5 volts1.5 volts Same
    KindRegular batteryCamera & alarm battery

    Lasts longer: FR6 (about 173% longer)

  4. 4

    Where to buy R6

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

    Amazon searchEnergizer listings, any pack sizeSearch Amazon for Energizer 1215
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    Amazon searchMulti-packs from any brandSearch Amazon for R6 multi-packs
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    Amazon searchDuracell listings, the same batterySearch Amazon for Duracell R6
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    Search Amazon for FR6As an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.
  5. 5

    Learn more

    About R6About FR6Check another pair
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Questions people ask

Can I use FR6 instead of R6?

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

Can I use R6 instead of FR6?

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

Which one lasts longer?

FR6 (about 173% longer).

All the numbers

R6FR6
Diameter14.5 mm14.5 mm
Height50.5 mm50.5 mm
Nominal voltage1.5V1.5V
Typical capacity1100 mAh3000 mAh
ChemistryCarbon-zincLithium iron disulfide
Shelf life5 yrs10 yrs
Operating temp-10 to 60 °C-30 to 60 °C
Can I use FR6 instead of R6?Usually
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1The short answer2Both ways3Differences4Buy it5Learn more