CR2450 battery size
24 × 5 mm
3 V · Lithium · Coin cell · also sold as DL2450, BR2450
About the CR2450
A larger coin cell at 24.5 mm across, used in alarm sensors, some car keys and medical monitors. Around 600 mAh, nearly three times a CR2032, which is why it turns up where a coin cell has to last years.
The numbers
| Diameter | 24 mm · 0.94 in |
| Thickness | 5 mm · 0.20 in |
| Nominal voltage | 3 V |
| Chemistry | Lithium |
| Other names | DL2450, BR2450 |
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 |
| CR1220 | 12 × 2 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 CR2450 battery?
24 mm across and 5 mm thick — 0.94 × 0.20 inches.
What voltage is a CR2450?
3 V (Lithium).
What do the numbers in CR2450 mean?
They are the size. 24 is the diameter in millimetres and 50 is the thickness in tenths of a millimetre — so CR2450 is 24 mm by 5 mm. The rule holds for every coin cell and every lithium-ion cylinder named this way.
Is the CR2450 rechargeable?
Not in this chemistry. Lithium cells of this size are single-use; recharging one is a fire risk rather than a saving.