Home › Coin cells

Coin cell battery size chart

Every CR coin cell is 3 V. The code is the size: the first two digits are the diameter in mm and the last two the thickness in tenths of a mm, so a CR2032 is 20 mm × 3.2 mm. Cells of the same diameter fit the same holder, but only the right thickness makes good contact.

Four common coin cells at the same scale.

9.5 mm coin cells (0.374 in)

Battery	Thickness	Capacity	Equivalents	Typical use
CR927	2.7 mm	≈ 30 mAh	DL927	LED finger lights and glow toys

10 mm coin cells (0.39 in)

Battery	Thickness	Capacity	Equivalents	Typical use
CR1025	2.5 mm	≈ 30 mAh	DL1025, 5034LC	watches

12.5 mm coin cells (0.49 in)

Battery	Thickness	Capacity	Equivalents	Typical use
CR1216	1.6 mm	≈ 25 mAh	DL1216	watches
CR1220	2 mm	≈ 40 mAh	DL1220, ECR1220	laser pointers
CR1225	2.5 mm	≈ 50 mAh	DL1225	watches

16 mm coin cells (0.63 in)

Battery	Thickness	Capacity	Equivalents	Typical use
CR1616	1.6 mm	≈ 55 mAh	DL1616, ECR1616	some Honda and Acura remote keys
CR1620	2 mm	≈ 75 mAh	DL1620, ECR1620, 5009LC	older car keys and remotes (several makes)
CR1632	3.2 mm	≈ 140 mAh	DL1632, ECR1632	many Toyota and Lexus smart keys

20 mm coin cells (0.79 in)

Battery	Thickness	Capacity	Equivalents	Typical use
CR2012	1.2 mm	≈ 55 mAh	DL2012	thin watches
CR2016	1.6 mm	≈ 90 mAh	DL2016, ECR2016, DL2016B	older Toyota, Honda and Subaru key remotes
CR2025	2.5 mm	≈ 165 mAh	DL2025, ECR2025, 5003LC	car key fobs (many Mercedes-Benz, some GM, Nissan and Mazda keys)
CR2032	3.2 mm	≈ 225 mAh	DL2032, ECR2032, 5004LC, 2032	most modern car key fobs

23 mm coin cells (0.91 in)

Battery	Thickness	Capacity	Equivalents	Typical use
CR2320	2 mm	≈ 130 mAh	DL2320	some remote controls
CR2330	3 mm	≈ 260 mAh	DL2330, ECR2330	some car keys

24.5 mm coin cells (0.96 in)

Battery	Thickness	Capacity	Equivalents	Typical use
CR2430	3 mm	≈ 290 mAh	DL2430, ECR2430, 5011LC	some Volvo and other European car keys
CR2450	5 mm	≈ 620 mAh	DL2450, ECR2450, 5029LC	Ford and Lincoln intelligent access key fobs
CR2477	7.7 mm	≈ 1,000 mAh	CR2477N	long-life wireless sensors

30 mm coin cells (1.18 in)

Battery	Thickness	Capacity	Equivalents	Typical use
CR3032	3.2 mm	≈ 500 mAh	DL3032	some car keys and electronic locks

BR cells (for example BR2032) have the same sizes but a different lithium chemistry that handles heat better and delivers less current; use them only where the device allows. LIR / ML cells are rechargeable versions with different voltage: see LIR2032.