DC/DC Power Supply On EBAY
I thought this to be cute. Interesting. DC/DC Converter
Forum Discussion
With 5A max output, you will need one of those for each DC device. 95% efficiency is shown for one specific mode. I recall another gizmo like this, the efficiency was all over, ranging from 95% to 70%, depending on particular V and A. Makes me wonder if $20 inverter wouldn't be better and simpler... Wired to all your AC sockets...
