
Lithium Ion Pin type batteries - designed for wearables
Miniature rechargeable batteries - especially designed for wearables
Our Li-Ion miniature batteries deliver a high energy density, a good cycle stability and a long lifespan. In addition, they are extremely light and robust.They are especially designed for wristband devices, fitness trackers, smart glasses, stylus pens, wireless head phones, hearing aids, industrial IoT applications and other applications.
Panasonic Li-Ion (Pin type) Battery Solution Video
This video shows on the one side the recommended applications of our Li-ion Pin type batteries and on the other side the inner working of a Li-Ion Pin battery and gives an excellent overview of the batteries materials (e.g. electrodes, gasket, insulator, poles, etc.).
Downloads
Name | File type | Size | Date | Language |
---|---|---|---|---|
Lithium batteries handbook | Manual, Handbook | 14 MB | 20.10.2020 | English |
Panasonic-Batteries_Li-Ion-Pin-type-Leaflet-Wearables-GB | Flyer, Leaflet | 942 KB | 30.08.2024 | English |
Short-Form-Catalog | Catalog | 8 MB | 07.03.2025 | English |
Features
- Quite small diameter pin-shaped Lithium-Ion battery which expands design options for micro devices
- Rechargeable battery that can be used repeatly and has the output capability required for near field communications
- High-strength metal exterior provides excellent reliability
- High energy density, a good cycle stability and long lifespan
- Outstanding technical design makes this battery ideal for wearable devices with heavy power demands
Li-Ion batteries - terminal types

We are offering a range of different tabs for our Li-Ion Pin type batteries in order to meet customer needs. In addition, tailor-made solutions are possible as well.
E2 through-hole type
M2 surface mount type
Specification
Part number | CG-320B | CG-420A | CG-425A | |
Maximum charging voltage | 4.35V | |||
Nominal voltage | 3.8V | |||
Typical capacity | 16.0mAh | 23.0mAh | 32.0mAh | |
Dimensions* | Diameter(Max.) | 3.65mm | 4.7mm | 4.7mm |
Height(Max.) | 20.0mm | 20.0mm | 25.0mm | |
Weight* | Approx. 0.5g | Approx. 0.8g | Approx. 1.0g | |
Operating temperature | Charge | 0℃ to +60℃ | ||
Discharge | -20℃ to +60℃ | |||
Maximum charging current | 11.2mA | 66.0mA | 90.0mA | |
Certifications | IEC62133, UL1642 |