[Phil] managed to fit a 2.7 – 4.2v Li-Poly battery in the mouse’s palm rest, where there was a little extra empty space. The battery can be charged from any USB port via a custom-built ...

A battery technology similar to Lithium-ion. Current "lithium-polymer" batteries are technically "lithium ion polymer", since pure lithium-polymer batteries are not yet commercially viable.

The fundamental difference between a polymer lithium-ion battery and a liquid lithium-ion battery is that the electrolytes used in the two are different. Lithium-ion batteries have high energy ...