I currently live in a 5th wheel with no off-grid electrical capability other than 2 aging marine lead acid batteries (38ah@12v usable).
I want to start my upgrade with a massive battery system, that will (eventually) utilize 2 battery banks, a house inverter and 2 micro-inverters. The battery banks will be mounted (approx.) 25 feet apart, with most of the charging infrastructure on one end. I am leaning toward a 24V 200AH server rack battery near my primary inverter and 24V 100AH (likely in the form of 2x100ah12v) 25 feet away behind my fireplace. I would like to go with a higher voltage to allow lower current between the 2 banks, but I want to sanity check the challenges I am looking at for using 24V batteries.
The challenges I am expecting with the higher voltages are:
Needing a 24V to 12V DC-DC to power the existing loads in the system.
Needing a 12V to 12V DC-DC to charge the batteries from my truck when towing (DC-DC will be required to protect my alternator anyway, regardless of voltage)
Needing a 24V AC-DC charger to charge from shore power. (Will need a new charger anyway for LiFePO batteries)
For those who are using 24V+ batteries on existing 12V RVs, am I missing anything with this list of challenges?
I want to start my upgrade with a massive battery system, that will (eventually) utilize 2 battery banks, a house inverter and 2 micro-inverters. The battery banks will be mounted (approx.) 25 feet apart, with most of the charging infrastructure on one end. I am leaning toward a 24V 200AH server rack battery near my primary inverter and 24V 100AH (likely in the form of 2x100ah12v) 25 feet away behind my fireplace. I would like to go with a higher voltage to allow lower current between the 2 banks, but I want to sanity check the challenges I am looking at for using 24V batteries.
The challenges I am expecting with the higher voltages are:
Needing a 24V to 12V DC-DC to power the existing loads in the system.
Needing a 12V to 12V DC-DC to charge the batteries from my truck when towing (DC-DC will be required to protect my alternator anyway, regardless of voltage)
Needing a 24V AC-DC charger to charge from shore power. (Will need a new charger anyway for LiFePO batteries)
For those who are using 24V+ batteries on existing 12V RVs, am I missing anything with this list of challenges?
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