Thank you all for the answers. After reading your suggestions i've installed a temp sensor on my alternator discovering that it work
around 72 celsius degrees working at 15 Amps yet, but at full working with a Lifepo4 battery and the other stuffs on i will need around 50Amps continuous (the Orion input/output current
can't be trimmed), i discovered also that my basic alternator can't work
over the 80 degrees, over this line on long term use it could be damaged cause the bearing's grease will flow out with all the connected issues. So now i am sure to need an high power alternator with a smart regulator that use a temp sensor. I took a look at the sterling systems, but seems they have just a dumb overheat protection that stop the alternator at 120 celsius degrees leaving it start again when temp go down and giving sometimes some pingpong issues. The best solution look like to install a balmar
with a smart regulator improoved with temp sensor on the alternator, it will module the amps production calibrated on the fixed temperature. Seems just Ballmar made this kind of items and they are really expensive here in italy
(alt plus regulator over 1800 euro), so at the moment i will use for one more year the AGM batteries
slowly building the new system and waiting the Lifepo4 prices will go down a bit more. Ty again at all.