Rather than start another thread, let me add to this one since the topic is the same. Hopefully I'm not high jacking the main theme.
I too have been exploring the possibility of going with lithium batteries for my Trolling motor (Minn Kota 24v 70/80#).
While the cost is steep, if I do the math, they'll come out cheaper than replacing regular batteries every 2-3 years... if they are indeed 10 year batteries.
Currently, I'm using a pair of Brute Force Puretron AGM series 34 batteries, inside my console (Mako 18LTS). Being that they are dual purpose, I'm not getting the longevity I thought I would get, which is why I'm considering the lithiums. So I have a few questions about the lithiums:
Minn Kota says their charger will charge the Lithiums if I set the charger to AGM. Fine. But they also warned that Lithiums run hotter when the TM is set to high, and this can ruin the motor. Can anyone verify this?
Also I'm assuming that I'd need a deep cycle version of the lithium, but I'm not seeing many options. Any brands I should be looking at?