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Home › Batteries › CR2032
Coin battery

CR2032 battery

1What it is2Safety3Other names4Facts5Buy it6Things7Swaps
  1. 1

    What it is

    CR2032+ 3V

    CR2032 is a coin battery, about the size of a nickel. It gives 3 volts.

    Get CR2032 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

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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 →

    Bitter-coated packs

    Some child-safe packs have a bitter coating. It’s harmless, but in AirTags and some heart-rate straps it can stop the battery working. Pick an uncoated pack for those.

  3. 3

    Names you might see in the store

    All of these are the same battery. Any of them will work.

    DL2032ECR20325004LC6032KECR2032
  4. 4

    Quick facts

    Size
    About the size of a nickel
    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
    Car key fobsPC motherboards (CMOS)Apple AirTagHeart-rate strapsGlucose metersBathroom scales
  5. 5

    Where to buy it

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

    Our pickThe exact match, 4-packEnergizer CR2032 3.0V Battery (4-Pack)
    Check Price on Amazon →
    Best value10-pack, handy to keep in a drawerCR2032 3.0V Battery Value Pack (10-Pack)
    Check Price on Amazon →
    Other brandDuracell DL2032, the same batteryDuracell DL2032 / CR2032 3.0V Battery
    Check Price on Amazon →

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

  6. 6

    Things that use CR2032

    2022–2025 Honda Civic Smart Key FobTakes CR2032›2019–2024 Toyota RAV4 Smart KeyTakes CR2032›2020–2024 Subaru Outback Key FobTakes CR2032›Tesla Model 3 Key FobTakes CR2032›Apple AirTagTakes CR2032›
  7. 7

    Can I use something else?

    Can I use CR2025 instead of CR2032?In a pinchCan I use DL2032 instead of CR2032?YesCan I use LIR2032 instead of CR2032?NoCan I use CR2016 instead of CR2032?In a pinch
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See it at real size

CR2032 next to a US quarter and an AA battery. “Real size” matches your hand once your screen is set up in Measure it.

CR2032Thickness 3.2US quarterAA

What do the letters mean?

Battery names are a code. Here’s how to read CR2032:

CLithium manganese dioxide chemistry (3.0V)
RRound coin / button form factor
20≈ 20 mm diameter (exact 20.0 mm, 0.787 in)
323.2 mm thickness (exact 3.2 mm, 0.126 in)

The same battery from each brand

BrandTheir name for it
Official nameCR2032
EnergizerECR2032
DuracellDL2032
Murata (formerly Sony)CR2032
Renata (Swiss)CR2032
PanasonicCR-2032
Varta6032
MaxellCR2032
RayovacKECR2032

Exact measurements

Width
20.0 mm (0.787 in)
Thickness
3.2 mm
Voltage
3.0V (empty at 2.0V)
Energy stored
225 mAh
Weight
3 g
Made with
Lithium manganese dioxide
Works between
-30 … 60 °C
Official code
CR2032 · ANSI 5004LC

Questions people ask

Is CR2032 the same as DL2032?

Yes. They’re the same battery with different names. You might also see DL2032, ECR2032, 5004LC, 6032.

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.

CR2032+ 3V
CR2032Coin battery
Get CR2032 on AmazonAs an Amazon Associate, KnowYourBatteries.com earns from qualifying purchases.

Something wrong or missing? Tell us

1What it is2Safety3Other names4Facts5Buy it6Things7Swaps