He bought a Quick Charge power bank and then hacked a Digispark ... Depending on how the end-point negotiates with the charger, either 5V, 9V or 12V outputs are supported. You can dig into the ...

"These chargers are designed to be as versatile as the boaters who use them. One charger, multiple batteries, zero stress," Stated Nicholas Vasilaros, CEO and owner of Abyss Battery ®.

This all-in-one powerhouse takes the guesswork out of battery management, allowing you to recharge everything from your 12V ... DC-DC Alternator Charger, the ultimate tool for on-the-go power.

The marine power leader has announced a cutting-edge line of Multi-Bank and DC-DC Marine On-Board Chargers ... allowing you to recharge everything from your 12V starting battery to your 24V ...