Forum Discussion
RoyB
Feb 20, 2015Explorer II
There are a few of these unit out there. They are expensive however..
This is a block diagram of the Magnum ME2012-20B 2000W 12V Inverter 100A DC Charger

The way this works is when connected to shore power or Generator the MAGNUM ME2012-20B passes the 120VAC to your EMERGENCY 120VAC SUB=PANEL and also charges your connected battery bank.
When the SHORE POWER or Generator is off line then the MAGUNM ME-2012-20B auto switches and has a built-in SINE WAVE INVERTER to feed your EMERGENCY 120VAC POWER SUB-PANEL using your connected large 12VDC BATTERY BANK as power source.
Is this what you are looking for...
GOTO the MAGNUM site and read up on their different product models on this.
hope this helps some - I don't have one of these setups but have looked into them. When things cost in the thousands of dollars I usually quit my pipe dreaming.
You can do the same thing here with individual items - The MAGNUM is nice having all of that built-in a single box with a nice monitor panel.
Roy ken
This is a block diagram of the Magnum ME2012-20B 2000W 12V Inverter 100A DC Charger

The way this works is when connected to shore power or Generator the MAGNUM ME2012-20B passes the 120VAC to your EMERGENCY 120VAC SUB=PANEL and also charges your connected battery bank.
When the SHORE POWER or Generator is off line then the MAGUNM ME-2012-20B auto switches and has a built-in SINE WAVE INVERTER to feed your EMERGENCY 120VAC POWER SUB-PANEL using your connected large 12VDC BATTERY BANK as power source.
Is this what you are looking for...
GOTO the MAGNUM site and read up on their different product models on this.
hope this helps some - I don't have one of these setups but have looked into them. When things cost in the thousands of dollars I usually quit my pipe dreaming.
You can do the same thing here with individual items - The MAGNUM is nice having all of that built-in a single box with a nice monitor panel.
Roy ken
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,211 PostsLatest Activity: Mar 09, 2025