Artum Snowbird wrote:
I would think that you would want to separate the two sets of batteries with a switch so that you can use one set or the other for output. But at the same time you will also want to charge both sets of batteries. I think you can do this with a good switch and a few diodes that will only allow circuit flow in one direction.
This sounds like the best plan.
Both types of batteries actually have different charging profiles. The AGM's factory specs indicate maximum bulk charging of 14.4 - 15.0
The SLA's will require higher voltage for occasional equalization.