Hello! We are definitely new to all of this, and our Sportsman we bought needs lots of work, but I am going to enjoy the adventure. What a neat toy to have..and I will never be homeless..lol To start off with, we bought it with a dead battery and can't really tell if has an alternator issue, but regardless, we want to buy a battery that has plenty of cranking power to start our journey at fixing whatever ails it. We don't know how much of a battery it really needs, and since we bought it from someone that wasn't an RVer either, I wouldn't necessarily want to follow their guidelines. So, the question is. How much of a battery is enough for a 1973 Sportsman 8300 1Ton Motor Home? Thanks for your help.