He bought a Quick Charge power bank and then hacked a Digispark to negotiate with the power bank to provide 12V output to Quick ... at version 4 and supports USB-C and USB-PD hardware such as ...

He decided to make a 12V power supply out of an antique ammo can ... banana plug jacks, a 5V USB charger and an integrated 12V lead-acid battery charger. The lid also features an LED strip light ...

This is because not all USB ports are created equally, and those fitted to cars often deliver far less power than those at home. Best car charger: 12V to USB adaptors to keep your phone .juiced By ...