Hi Salvo,
Alternator charging is a disappointment because the house batteries are rarely hungry because solar is "out of this world" effective for you.
My hall effect ammeter maxes out at 70 amps--and I do see it displaying an error. One of my charging paths is the oem. The other connects to the chassis battery. I have automatic circuit breakers on each to limit them to 50 amps, and I do have manual control over them, so sometimes I only operate one, and sometimes neither if I'm pushing hard with the inverter. When I'm limiting charging I do ten minutes on and fifteen minutes off.
