CR1220 Battery
Also known as: Lithium coin cell
One of the thinnest coin cell batteries available, designed for applications where space is extremely limited. The small size severely limits capacity and current capability, making it suitable only for ultra-low power applications like watch circuits and memory backup.
Quick Specifications
Voltage
3V
Capacity
35-40 mAh
Size
⌀12.5 mm
Height
2 mm
Technical Drawing
Dimensions shown in mm. Drawing not to scale.
Chemistry & Performance
| Chemistry | Voltage | Capacity | End Voltage |
|---|---|---|---|
| Lithium Manganese Dioxide | 3V | 35-40 mAh | 2V |
Physical Specifications
- Diameter
- 12.5 mm
- Height
- 2 mm
- Weight (typical)
- 0.9 g
Standard Designations
IEC Code
CR1220
Common Uses
- Watches (thin profile)
- Calculators
- Small remotes
- Medical devices
- Digital thermometers
- Key fobs
- Small electronics
- Backup memory applications
- IoT sensors
- Hearing aids
Temperature Range
Operating
-30°C to 85°C
Storage
-40°C to 100°C
Data Sources
- Energizer CR1220 Technical Datasheet
Retrieved: 2025-09-01
- Panasonic CR1220 Specifications
Retrieved: 2025-09-01
- Duracell CR1220 Technical Data
Retrieved: 2025-09-01