"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." These portable gadgets marry solar panels with battery packs—they’re small and lightweight enough to not ...

Solar charging of batteries has recently become very popular. A solar cell’s typical voltage is 0.7 V. Many panels have eight cells in series and are therefore capable of producing 5.6 V at most. This ...

As Africa embraces sustainability, solar-powered gadgets are becoming increasingly popular. These devices provide eco-friendly solutions to everyday problems, making them ideal for the continent's ...