I've got a 2016 RAM diesel that's been sitting in my garage in Maine. I'm trying to get it started. First started with the battery charge. Not sure it's going to charge enough, but the charger will sit for a few hours. Once charged, is there anything else I should do? Any help is appreciated. Need to get this thing going. It's probably got only about 16K miles as I've only used it when I came up to Maine on vacation. Now I've moved here and need transportation!