Has anybody used one of these eco-tech alternators ?? They put out 240 amps at idle and 300 at 4000 rpm ?? My plain is to run this alternator with two or four 6 volt batteries. The web site is www.wranglernw.com These alternators are rated at 8000 rpm continuous and are also used on the ford 7.3 ambulances . Not sure if this would charge the 6 volt bateries to quickly??