Thursday, September 3, 2020

[electricboats] Two voltage battery banks on one charger

I purchased a sailboat that wad in the middle of a refit. The previous owner already removed the diesel and had purchased a the components to go electric. The motor is 72v and I've found that the midnight classic chargers charge up to 72v. The issue I'm looking at is I also need either 12 or 24v house batteries. 
My thought is to have solar charging the 72v (which is the drive bank) bank with the midnight classic and then charge the house bank of the 72v through either a dc to dc converter or another mppt charge. 
The drive bank in theory won't get much ures except to motor in light wind or into a slip. 
I have a little over 14kwh on the drive bank and somewhere around 600ah on the house. I also purchased a genset as a backup if needed. 
So this is my plan to this point unless someone has a better way or can explain if this will even work. 
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