Lithium Ion Pin type batteries - designed for wearables

Miniature batteries have become a key component of today's common mobile wearable devices. For these innovative product ideas to work in practice, their Li-Ion cells must be as small as possible.

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.

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Name File type Size Date Language
PDF Lithium batteries handbook Manual, Handbook 14MB 20.10.2020 English
PDF Li-Ion pin type batteries leaflet - wearables (German) Flyer, Leaflet 324KB 20.10.2020 Deutsch
PDF Li-Ion pin type batteries leaflet - wearables Flyer, Leaflet 317KB 20.10.2020 English
Batteries Short-Form-Catalog for Professionals English


  • 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


Electric pens
Hearing aid
Wristband devices
Smart glasses
Industrial IoT applications etc.

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


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