I've been trying to read up a lot on batteries, but I'm pretty new to the outboard motors with batteries. I've purchased a Chrysler 55 HP motor, and the guy I bought it from was using a 12 volt battery. So I've been reading about batteries that are used mainly for startup, and batteries for long running things like trolling motors. I'm not really sure what one would be best for me though because I will need a good battery for the startup, and then I am planning on using this motor for trolling (until I can get the money for an electric trolling motor) so at first I thought that I would just go with a car battery for the startup, but I'm not sure if that's the best way to go since I will be trolling with the motor as well. Any thoughts?