Polymer Li-Ion Single Cell Battery 3.7V, 400mAh (30x20x4 mm) 402030

Description

These are very slim, extremely light weight batteries based on the new Polymer Lithium Ion chemistry.

This is the highest energy density currently in production.

Each cells outputs a nominal 3.7V at 400mAh

Dimentions 30x20x4 mm (Length x Width x Thickness)

These batteries require special charging.

Do not attempt to charge these with anything but a specialized LiPo charger.

Battery includes built-in protection against over voltage, over current, and minimum voltage.