Following with interest as so far with the deep cycle LiFePo4 batteries, every supplier (so far) does not recommend charging them from the motor but using a 240V charger at home. Near as I can figure they don't like the intermittent variable charge they get from an outboard due to short runs, lots of idling etc. I'd love to own one but as I also use an anchor winch which draws a lot of power I would need the capability of recharging from the motor supply.
I think we need a few more players in this area, it's a bit like the lead crystal batteries, only one importer into Australia now as they didn't live up to their hype, (although I know people who have them and love them).