[kaptain]

Magnum inverter and 6 Battleborn Lithium batteries.  It seems like I don’t have near the time I would expect before batteries are drained when boondocking.  Ok, so as some of you know I’m still electrically challenged but here is what I’m seeing.

As soon as I come off of shore power or generator my inverter controller reads 13.0 to 13.1.  From what I could gather from looking around online it seems like they should be closer to 13.6 if fully charged?  On the chart I have it shows 13.0-13.1 to be around 35% capacity?

Ben, do you connect all your 6 lithium batteries in parallel?
I am thinking to replace my 6 house lead-acid batteries with Lithium Iron Phosphate (LiFePO4), and started to make some inquiries. I was told by a supplier that their LiFePO4 batteries support a maximum of 4 in parallel or 4 in serial. Any more quantity in a group would be problematic.
I didn't understand why, so I googled a little bit. I found this discussion below, it might explain why so:

https://diysolarforum.com/threads/why-ca...lel.32910/