[Eggmont] was facing this dilemma with a Makita battery from a broken angle grinder and decided to make a USB ... charger out of it. [Eggmont] took the simplistic approach, using an old cigarette ...

Most modern cars offer at least two ways to charge up a smartphone, in the form of a 12V lighter socket and a USB port. The latter could be more convenient for many, as it uses the same cable you ...

The AC produced by the alternator gets converted to fairly uniform DC to charge the ... W maximum and no cigarette lighter in sight, more and more cars are shipping with USB-A and USB-C ports ...