Why the Battery?
The first reason is to provide micro:bit users with an environmentally friendly rechargeable battery to replace those alkaline batteries supplied with the micro:bit. In the long run, this will save users money by eliminating hundreds of throw away single-use batteries.
While you are teaching students about programming, why not teach them about solar energy. With the addition of the solar panel, our simple rechargeable battery becomes a fantastic teaching aid to fill young minds with inspiring new ideas. For underdeveloped countries with limited infrastructures, no power is required.