[Michael] took a battery charger meant to be connected to mains power and converted it to work with a solar panel. This was a traditional 4 cell charger which charges the batteries in pairs.

Although smartphones nowadays come with big batteries. But still, due to increased use, the battery starts to drain quickly. This problem increases further if you are out somewhere and your phone's ...

Amazon has knocked $10 off the price of this popular solar-charging power bank to keep your phone charged no matter where you ...

A few years ago, [Lukas Fässler] needed a solar charge controller and made ... An MPPT (Maximum Point Power Tracking) charger is a smart unit optimized to handle all these changing conditions ...