Hello! I would like to use the Energi to power a camper or use it as a backup for the house if the power goes out, and the 150watt built-in inverter isn't gonna cut it. I know that the EV battery pack is HUGE and could power my house for a couple days, but it runs at 200 volts. Where could I attach my inverter to run off of the EV pack but at 12 volts? I'm looking at an inverter that can do about 400 watts. Thanks!