Hello everyone I’m new to the whole Lithium crowd and have a few questions and looking for advice.
Previously I had my boat (with smaller outboard engine and a 18amp alternator) set up that the main engine battery (24 series 850CCA) would recharge 1× 27 series AGM used for the trolling motor when the motor was running via Automatic charging relay (ACR) and it worked very well on long extended trips away from a power source to recharge.
I’m looking to now replace the AGM with a Lithium to save weight and I’d also gain a bit of capacity. But here’s the question. I read online that Lithium batteries take lots of amperage vs AGM and some state that a Automatic charge relay is a bad idea for the alternator and to use a DC-DC charger. The problem is that the smallest dc-dc charger I can find is a victron smart 12-12 /18amps. Wouldn’t this burn out my alternator? What other options do I have? Am I stuck and should keep original set-up with Lead acid and AGM?
Thanks
