This solar charger from Walmart can help keep your phone and other devices fully charged, so you don't have to worry about ...

Of course, to take advantage of the charging case, the phone would have to have wireless charging as there's no other connection from the case to the phone. The advantage of this is that the case, ...

A few years ago, [Lukas Fässler] needed a solar charge controller and made his own, which he has been improving ever since. The design is now mature, and the High Efficiency MPPT Solar Charger ...