I was starting to highjack CND's thread with the LC200, so here's a new one. Kind of a continuation from my winching with Lithium thread, which concludes that winching with Lithium is somewhat new territory. At least when I set up my winch wiring, I made the leads long enough to reach both my house and start battery. It's a fair amount of work and material to redo the cables. But back to lithium. From the manufacturers, it seems that most lithium batteries would be ok running directly from an alternator, as their BMS would shut down the battery if voltage were too high or too low. What was not clear was which situations would damage the alternator itself, and why. I have one alternator that feeds the start battery, and an identical second one that was feeding the house battery. No relays or DC/DC chargers or any connection at all between the two systems, unless I used jumper cables. This was mostly done to preserve the starting battery from being dead, especially in the winter. I am often away from the truck for days at a time, and often the only vehicle at a trailhead. The second alternator can also be swapped into the start system, so extra redundancy there. From my searches, it appears that my old alternator may not even charge the Lithiums fully, and would need a boost from another form of charger, like a 120v or a DC/DC charger. Anyone have any experience with this? My plan is to add solar within a few months, but for now, I need to replace my defunct AGM battery.