The unique HEC technology offers a fully packaged volumetric energy density of greater than 1,000Wh/l, which is unprecedented for a 4V rechargeable chemistry, especially when packaged in form factors ...

Infinite Power Solutions, Inc. (IPS) announced development of a new all-solid-state rechargeable battery technology with low manufacturing costs and record energy density.

It's also important to know how much charge you have left in your 4V battery ... importantly — are rechargeable. While they cost more than a standard disposable battery, you can get your ...