This roof will not only help to charge the Prius' main battery ... remember that it had a small solar panel built into its ...

This half-inch square ultra-low power energy harvesting LiPo cell charger ... battery health monitoring and undervoltage protection. [Kris] has been using the board along with a small 2.2 Volt ...

Think of these as giant versions of battery power banks used ... unit on our list has multiple charging options, including wall (AC outlet), car (12-volt), and solar. Each input method charges ...

Data logging and high efficiency are important for a charge controller, because batteries vary in their characteristics as they recharge and the power generated from things like solar panels ...