I don't really need a modern converter. I boondock here in Alaska 100% of the time and never plug in. I use solar to keep my batteries topped off and my energy usage is minimal. Cell phones, interior lights-all LEDs, my kindle and laptop and that's it for power needs. Yep Victory402- my mppt charge controller charges my AGMs perfectly. I could upgrade to a progressive dynamic converter, just no need. I was just curious if I unhooked my batteries, if all systems would still function using my 30 amp shore power