I have a 160 amp alternator with regulator set to 14.1. Tried charging my 20% SOC LI house batteries through a diode isolator. Because LI will take a high charge rate, alternator worked very hard charging, and within about 20 mins, alternator frame was about 240 f. before I disconnected the house batteries. This is why the DC to DC converters are good, they not only supply the proper voltage, but also limit the charge rate.
Foretravel tag axle 40 ft. 500 hp/1550 ft/lbs ism 1455 watts on the roof. 600 a/h's lithium down below.