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Home › Batteries › CR927
Coin battery

CR927 battery

1What it is2Safety3Other names4Facts5Buy it
  1. 1

    What it is

    CR927+ 3V

    CR927 is a coin battery, about as wide as a pea. It gives 3 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 →
  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 pea
    Thickness
    As thick as 4 credit cards stacked
    Power
    3 volts
    Keeps in a drawer for
    About 10 years
    Rechargeable?
    No, use once
    Found in things like
    LED finger lightsFishing bobbers
  5. 5

    Where to buy it

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

    Our pickThe exact match, 4-packEnergizer CR927 3.0V Battery (4-Pack)
    Check Price on Amazon →
    Best value10-pack, handy to keep in a drawerCR927 3.0V Battery Value Pack (10-Pack)
    Check Price on Amazon →
    Other brandDuracell, the same batteryDuracell CR927 / CR927 3.0V Battery
    Check Price on Amazon →

    Buttons open amazon.com 🇺🇸, picked from your country.

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See it at real size

CR927 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

CR927Thickness 2.7US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read CR927:

CLithium manganese dioxide chemistry (3.0V)
RRound coin / button form factor
9≈ 9 mm diameter (exact 9.5 mm, 0.374 in)
272.7 mm thickness (exact 2.7 mm, 0.106 in)

The same battery from each brand

BrandTheir name for it
Official nameCR927

Exact measurements

Width
9.5 mm (0.374 in)
Thickness
2.7 mm
Voltage
3.0V (empty at 2.0V)
Energy stored
30 mAh
Weight
—
Made with
Lithium manganese dioxide
Works between
-30 … 60 °C
Official code
CR927

Questions people ask

Is CR927 the same as CR927?

Yes. They’re the same battery with different names.

How long will a spare keep in a drawer?

About 10 years if it stays cool and dry.

Can I recharge it?

No. Never try to recharge 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.

CR927+ 3V
CR927Coin battery
Get CR927 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

Something wrong or missing? Tell us

1What it is2Safety3Other names4Facts5Buy it