I will be talking about single-series (1sXp) cell configurations, for a simple reason – multiple-series configurations are not something I consider myself as having worked extensively with. The single ...

A simple NiCd charger can be built using ‘junk box’ components and an inexpensive LM317 or 78xx voltage regulator. Using a current limiter composed of R3 and a transistor, it can charge as many cells ...

Do you often find yourself running out of battery on your Android phone? Do you wish you could extend the battery life of your device without buying a new one or carrying a power bank? Well, you're in ...