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Home › Batteries › CR2430
Coin battery

CR2430 battery

1What it is2Safety3Other names4Facts5Buy it
  1. 1

    What it is

    CR2430+ 3V

    CR2430 is a coin battery, about the size of a quarter. 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.

    DL24305011LCECR24306430
  4. 4

    Quick facts

    Size
    About the size of a quarter
    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
    Volvo key fobsCar alarms
  5. 5

    Where to buy it

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

    Our pickThe exact match, 4-packEnergizer CR2430 3.0V Battery (4-Pack)
    Check Price on Amazon →
    Best value10-pack, handy to keep in a drawerCR2430 3.0V Battery Value Pack (10-Pack)
    Check Price on Amazon →
    Other brandDuracell DL2430, the same batteryDuracell DL2430 / CR2430 3.0V Battery
    Check Price on Amazon →

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

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See it at real size

CR2430 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

CR2430Thickness 3.0US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read CR2430:

CLithium manganese dioxide chemistry (3.0V)
RRound coin / button form factor
24≈ 24 mm diameter (exact 24.5 mm, 0.965 in)
303.0 mm thickness (exact 3.0 mm, 0.118 in)

The same battery from each brand

BrandTheir name for it
Official nameCR2430
EnergizerECR2430
DuracellDL2430
Renata (Swiss)CR2430
PanasonicCR-2430
Varta6430

Exact measurements

Width
24.5 mm (0.965 in)
Thickness
3.0 mm
Voltage
3.0V (empty at 2.0V)
Energy stored
290 mAh
Weight
4 g
Made with
Lithium manganese dioxide
Works between
-30 … 60 °C
Official code
CR2430 · ANSI 5011LC

Questions people ask

Is CR2430 the same as DL2430?

Yes. They’re the same battery with different names. You might also see DL2430, 5011LC, ECR2430, 6430.

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.

CR2430+ 3V
CR2430Coin battery
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1What it is2Safety3Other names4Facts5Buy it