Posted on Monday May 14, 2012 at 3:03 AM
You are thinking right on the cranking amps- more is better but also need to think of how long are you wanting to stay out on the water?how good is that 40 pound trolling motor and how much weight including yourself and total tackle it will be laboring against?The trolling motor I assume is a 12 volt and can be re-charged with any 12 volt automobile charger from wallie world,k-mart,sears,etc. Borrow a battery from a friend or use your truck battery to test it out. If it works-buy the best you can afford and have fun. Beware of leaks,wear life jacket, stay close to shore, only use in ponds and small creeks and take a ore with you.READ REGULATIONS on where you can use the scamp.