You guys that are thinking about big current charging your RV batteries using the vehicle alternator ought to consider what a separate outboard rectifier brings to the set up. You will get a lot more life out of your vehicle alternator with a separate rectifier as it is the main heat source when the alternator is called on to produce current.
Forum member Mexicowanderer is a guru of alternators and I would believe consulting with him would bring the best results. If you revisit this topic in the "Tech issues" section, there is a good chance he'll weigh in. At one time, he confessed to rebuilding 10,000 alternators. I don't doubt that a bit.
