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Home › Batteries › R25
Regular battery

R25 battery

1What it is2Other names3Facts4Buy it
  1. 1

    What it is

    R25

    R25 is a regular battery, much bigger than an AA. It gives 1.5 volts.

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  2. 2

    Names you might see in the store

    All of these are the same battery. Any of them will work.

  3. 3

    Quick facts

    Size
    Much bigger than an AA
    Power
    1.5 volts
    Keeps in a drawer for
    About 5 years
    Rechargeable?
    No, use once
    Found in things like
    Large flashlightsVintage transistor radiosPortable radios
  4. 4

    Where to buy it

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

    Amazon searchEnergizer listings, any pack sizeSearch Amazon for Energizer R25
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    Amazon searchMulti-packs from any brandSearch Amazon for R25 multi-packs
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    Amazon searchDuracell listings, the same batterySearch Amazon for Duracell R25
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See it at real size

R25 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

R25US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read R25:

RRound cylindrical form factor
25Carbon-zinc size number, not a dimension. Actual size 33.0 × 91.0 mm

The same battery from each brand

BrandTheir name for it
Official nameR25

Exact measurements

Width
33.0 mm (1.299 in)
Length
91.0 mm
Voltage
1.5V (empty at 0.9V)
Energy stored
10500 mAh
Weight
—
Made with
Carbon-zinc
Works between
-10 … 60 °C
Official code
R25

Questions people ask

How long will a spare keep in a drawer?

About 5 years if it stays cool and dry.

Can I recharge it?

No. Never try to recharge it.

R25
R25Regular battery
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1What it is2Other names3Facts4Buy it