Hymer Elektroblock - second leisure battery
This has probably been asked before - but here goes.
I'd like to fit a second leisure battery to my van (a Hymer E650), but I'm sure I saw something, somewhere about the Elektroblock having to be adjusted to provide sufficient output/allow for charging of two batteries.
Has anyone already added a second battery and had the ELB adjusted, or do I, like I've done in the past, just go ahead and connect the two batteries together (in parallel, of course).
My intention would be to add a second 110 AH Elecsol to the present battery (also a 110 AH Elecsol, and yes, I am aware that both batteries should be the same age and capacity).
Any thoughts, advice, hints would be appreciated.