The Samlex has built in surge protection and line conditioning:
Using state-of-the-art technology, the Samlex EVOTM inverter/charger operates at 165 million instructions per second with lightening fast load & response times, has 9 points of physical protection monitoring (being scanned up to 10,000 times per second) to detect fault conditions & protect itself in a vast range of adverse environments.
The Boondocker is currently wired for 12V straight to battery bank and there is a separate 12v feed from batteries to distribution box.
If I can't get the Samlex to turn of inverter & charger while maintaining 120V & 12V to RV, then I will re-route the wiring from the Boondocker to battery bank directly to distribution panel.
I actually kind of want to do the opposite of what you are suggesting. I have no lack of ways to top up the batteries, I don't need a charging source. I need a separate source of 12V to the RV while batteries are off to keep appliances going.
