[TJ Clark]

Battery capacity was picked by space.  I wanted the most I could put into existing battery compartments.  So yes, the capacity is 43KWh.  I figured it was like a garage, closet, welder....you can't have it too big.....   

48V shrunk the battery cables which were already big.  This voltage kept the current down to a manageable level.  It does create other problems getting hardware like fuses, contractors solenoids, heaters, fans...but I was able to find them.  The switches were close so I used blue seas rated for 48v, not the actual max battery voltage.

I did build the battery myself.  It is my first inverter/battery/solar science project.  The picture I have is the battery form for the shelf that used to have 2 8D batteries in them that I did some testing on.

My inverters are set up for split phase 50A.

The charging for each inverter is 70A.  I don't know if I can charge at 140A, but I think I will be able to plus solar.  I do not plan to charge off of the 12V system while driving, I left that circuit alone other than disabling the merge and isolator circuits and wiring the existing inverter only to the engine batteries.

Thanks for the reply. So much to chew on. 

Totally agree with the welder analogy.

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TJ, I am not answering for Glenn. However my time to charge my lithium bank is controlled by the max output of the charger/inverter. My magnum caps out at 125 amps. If you were to boondock more I would pursue a way of getting more amps/hr into the bank such as a supplemental charge system.

So a charger powered by the genset, but not on the inverter circuits. 

Thanks Richard.