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 ...

solar panels and electric vehicles both operate with direct current (DC), meaning there's no need to install an inverter between your panels and EV, although a charge controller is still ...

Running a server completely off solar power seems like it would be a relatively easy thing to do: throw up a couple of panels, tack on a charge controller and a beefy battery, and away you go.