Hey guys, I've browsed the forum and found a lot of helpful information, but I have one that hasn't been asked. I'm about to buy an '84 or '85 (He doesn't remember and the title is in the lock box) 200M that doesn't have a battery or owner's manual with it. Can anyone tell me what battery to buy for it? I rode trikes a lot when I was a kid, but this is the first I will have owned. I'm really excited about getting back into it. Thanks for the help!