Originally Posted by
bloodman
I would have in parallel through a battery 1, 1+2, 2, off switch. Have isolator or combiner provide charge to both while running and separate chargers.
Have them in parallel, position 1+2, while running and off at home.
Even though mine are running parallel, all power comes out of the lithium due to voltage differences. The AGM stays at full charge. The only time I would yse any power from the AGM is when the lithium battery drops to 12.8 volts.
The AGM is only acting as a buffer in this system.