I have solar panels to charge controller to batteries to DC loads. The charge controllers can handle twice the power at 24 VDC as they can at 12 VDC. The loads are 12 VDC (mainly LED lights).
Can I put two car batteries in series so they are 24 VDC to the charge controller and then connect about half the loads to one 12 VDC car battery and about half of the other loads to the other 12 VDC car battery?
What happens if I put a 1000 W, 12 VDC load on one battery and no load on the other 12 VDC battery (large load on one battery - but not the other)?