It's a lithium iron phosphate, max rated charge input is 100A and 90 would be a lot better. I charge off solar while camping and off the alternator while driving. I killed the last battery with the existing alternator and not having sufficient heat shielding and venting.
This is helpful information, I'm going to test at 3000 and see what it's actually putting out. It's possible it was just a heat issue and I'd rather not change the alternator if I don't have to.
A lot of the batteries now include BMS that works directly with an alternator to avoid needing to have a 2nd lead acid battery and then a DC-DC charge controller between them. The only issue is that you do need to keep the input a bit lower because when they overcharge the BMS shuts down and the full current of the alternator hits the the rest of the vehicle electrical system. Not super bad for things but does require shutting the car off, then turning it back on, the turning on all your accessories to drain some current. It's hard on the battery to charge at max charge as well. If I had space or could afford the weight I'd go 2 battery but it's just not practical with my setup. Hence trying to figure out if I can make 90 amp from a 97 or 98 work, or not?
