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Home › Batteries › 16340
Rechargeable flashlight battery

16340 battery

1What it is2Safety3Other names4Facts5Buy it
  1. 1

    What it is

    16340

    16340 is a rechargeable flashlight battery, short and chunky, about 3.4 cm long. It gives 3.6 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.

    RCR123A
  4. 4

    Quick facts

    Size
    Short and chunky, about 3.4 cm long
    Power
    3.6 volts
    Keeps in a drawer for
    About 3 years
    Rechargeable?
    Yes
    Found in things like
    Flashlights built for 3.7V cells
  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 16340
    See results on Amazon →
    Amazon searchMulti-packs from any brandSearch Amazon for 16340 multi-packs
    See results on Amazon →
    Amazon searchDuracell listings, the same batterySearch Amazon for Duracell 16340
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See it at real size

16340 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

16340US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read 16340:

1616 mm diameter
34034.0 mm length
Li-ion3.6V rechargeable

The same battery from each brand

BrandTheir name for it
Official name16340

Exact measurements

Width
16.3 mm (0.642 in)
Length
34.0 mm
Voltage
3.6V (empty at 2.5V)
Energy stored
700 mAh
Weight
—
Made with
Lithium-ion rechargeable
Works between
-20 … 60 °C
Official code
16340

Questions people ask

Is 16340 the same as RCR123A?

Yes. They’re the same battery with different names. You might also see RCR123A.

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.

16340
16340Rechargeable flashlight battery
Search Amazon for 16340As an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

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1What it is2Safety3Other names4Facts5Buy it