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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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.).

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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

Applications

Electric pens

Wearables

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

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