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Home › Batteries › 20700
Rechargeable flashlight battery

20700 battery

1What it is2Safety3Other names4Facts5Buy it
  1. 1

    What it is

    20700

    20700 is a rechargeable flashlight battery, much bigger than an AA. It gives 3.7 volts.

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  2. 2

    Safety first

    This one is rechargeable

    It gives more power than a normal battery. Only use it in things made for it.

  3. 3

    Names you might see in the store

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

    INR20700ICR20700
  4. 4

    Quick facts

    Size
    Much bigger than an AA
    Power
    3.7 volts
    Keeps in a drawer for
    About 3 years
    Rechargeable?
    Yes
    Found in things like
    FlashlightsPower banksE-bike packsPower toolsPortable radios
  5. 5

    Where to buy it

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

    Amazon searchEnergizer listings, any pack sizeSearch Amazon for Energizer 20700
    See results on Amazon →
    Amazon searchMulti-packs from any brandSearch Amazon for 20700 multi-packs
    See results on Amazon →
    Amazon searchDuracell listings, the same batterySearch Amazon for Duracell 20700
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See it at real size

20700 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

20700US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read 20700:

2020 mm diameter
70070.0 mm length
Li-ion3.7V rechargeable

The same battery from each brand

BrandTheir name for it
Official name20700

Exact measurements

Width
20.0 mm (0.787 in)
Length
70.0 mm
Voltage
3.7V (empty at 2.5V)
Energy stored
3300 mAh
Weight
60 g
Made with
Lithium-ion rechargeable
Works between
-20 … 60 °C
Official code
20700

Questions people ask

Is 20700 the same as INR20700?

Yes. They’re the same battery with different names. You might also see INR20700, ICR20700.

How long will a spare keep in a drawer?

About 3 years if it stays cool and dry.

Can I recharge it?

Yes, it’s rechargeable. Only charge it in a charger or device made for it.

20700
20700Rechargeable flashlight battery
Search Amazon for 20700As an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

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1What it is2Safety3Other names4Facts5Buy it