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Home › Batteries › INR18490
Rechargeable flashlight battery

INR18490 is the same as 18490

1What it is2Safety3Other names4Facts5Buy it
  1. 1

    What it is

    18490

    INR18490 is just another name for 18490. Same battery, different label, so you can buy either one.

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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.

    18490ICR18490
  4. 4

    Quick facts

    Size
    As long as an AA, but much fatter
    Power
    3.7 volts
    Keeps in a drawer for
    About 3 years
    Rechargeable?
    Yes
    Found in things like
    Compact flashlight bodiesPower banks
  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 18490
    See results on Amazon →
    Amazon searchMulti-packs from any brandSearch Amazon for INR18490 (18490) multi-packs
    See results on Amazon →
    Amazon searchDuracell listings, the same batterySearch Amazon for Duracell 18490
    See results on Amazon →

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See it at real size

18490 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

18490US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read INR18490:

INR18490Li-ion cell naming for this cell
18490Physical cell: 18.0 × 49.0 mm, 3.7V li-ion rechargeable

The same battery from each brand

BrandTheir name for it
Official name18490

Exact measurements

Width
18.0 mm (0.709 in)
Length
49.0 mm
Voltage
3.7V (empty at 2.5V)
Energy stored
1100 mAh
Weight
—
Made with
Lithium-ion rechargeable
Works between
-20 … 60 °C
Official code
18490

Questions people ask

Is INR18490 the same as 18490?

Yes. They’re the same battery with different names. You might also see 18490, ICR18490.

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.

18490
18490Rechargeable flashlight battery
Search Amazon for INR18490As an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

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1What it is2Safety3Other names4Facts5Buy it