CR1220 battery size
12 × 2 mm
3 V · Lithium · Coin cell · also sold as DL1220, BR1220
About the CR1220
A small coin cell in watches, small remotes and some fitness trackers. About 40 mAh — a fifth of a CR2032 — so it is chosen for space rather than for life.
The numbers
| Diameter | 12 mm · 0.47 in |
| Thickness | 2 mm · 0.08 in |
| Nominal voltage | 3 V |
| Chemistry | Lithium |
| Other names | DL1220, BR1220 |
Same diameter, different thickness
These are the cells most often confused with a CR1220, because they are exactly as wide and only differ in one dimension.
| Cell | Diameter | Thickness | vs CR1220 |
|---|---|---|---|
| LR44 | 11.6 mm | 5.4 mm | +3.4 mm |
| LR1130 | 11.6 mm | 3.1 mm | +1.1 mm |
Other coin cell sizes
| Cell | Size | Voltage |
|---|---|---|
| CR2032 | 20 × 3.2 mm | 3 V |
| CR2025 | 20 × 2.5 mm | 3 V |
| CR2016 | 20 × 1.6 mm | 3 V |
| CR2450 | 24 × 5 mm | 3 V |
| CR1620 | 16 × 2 mm | 3 V |
| CR1632 | 16 × 3.2 mm | 3 V |
| LR44 | 11.6 × 5.4 mm | 1.5 V |
| LR41 | 7.9 × 3.6 mm | 1.5 V |
| LR1130 | 11.6 × 3.1 mm | 1.5 V |
Frequently asked questions
What size is a CR1220 battery?
12 mm across and 2 mm thick — 0.47 × 0.08 inches.
What voltage is a CR1220?
3 V (Lithium).
What do the numbers in CR1220 mean?
They are the size. 12 is the diameter in millimetres and 20 is the thickness in tenths of a millimetre — so CR1220 is 12 mm by 2 mm. The rule holds for every coin cell and every lithium-ion cylinder named this way.
Can I use a LR44 instead of a CR1220?
They are the same diameter, 12 mm, and different thicknesses: 2 mm against 5.4. A LR44 is thicker and often will not let the compartment close. Same voltage, so nothing is damaged by trying.