re: Trolling motor battery

Most of the cheap batteries come out of the same plants. So you should decide based upon warranty and availability. As far as the expensive battered don't go optima they are not what they once were. Odysesy is one of the best, however sears diehard platinum are rebadged odysseys with an incredie warranty. I think it's either 7 or 8 years with something like 4 or 5 year replacement then prorate after.

Look carefully at the warranties. Not just the years total but how they handle. Replace vs prorate.