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Home › Batteries › LIR1220
Rechargeable coin battery

LIR1220 battery

1What it is2Safety3Other names4Facts5Buy it
  1. 1

    What it is

    LIR1220+ 3.6V

    LIR1220 is a rechargeable coin battery, about as wide as a shirt button. It gives 3.6 volts.

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  2. 2

    Safety first

    Keep away from children and pets

    A swallowed coin or button battery can cause serious burns inside the body within 2 hours. If you think one was swallowed, get emergency help right away.

    Swallowed one? What to do now →

    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.

  4. 4

    Quick facts

    Size
    About as wide as a shirt button
    Thickness
    As thick as 3 credit cards stacked
    Power
    3.6 volts
    Keeps in a drawer for
    About 3 years
    Rechargeable?
    Yes
    Found in things like
    Devices with a built-in charging circuitSmart-home sensors
  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 LIR1220
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    Amazon searchMulti-packs from any brandSearch Amazon for LIR1220 multi-packs
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    Amazon searchDuracell listings, the same batterySearch Amazon for Duracell LIR1220
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See it at real size

LIR1220 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

LIR1220Thickness 2.0US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read LIR1220:

LILithium-ion rechargeable (3.6V)
RRound coin / button form factor
12≈ 12 mm diameter (exact 12.5 mm, 0.492 in)
202.0 mm thickness (exact 2.0 mm, 0.079 in)

The same battery from each brand

BrandTheir name for it
Official nameLIR1220

Exact measurements

Width
12.5 mm (0.492 in)
Thickness
2.0 mm
Voltage
3.6V (empty at 2.75V)
Energy stored
10 mAh
Weight
0.7 g
Made with
Lithium-ion rechargeable
Works between
-20 … 60 °C
Official code
LIR1220

Questions people ask

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.

Which way up does it go?

Usually with the side marked “+” facing you or facing up. Look at how the old one sits before you take it out.

LIR1220+ 3.6V
LIR1220Rechargeable coin battery
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1What it is2Safety3Other names4Facts5Buy it