I am not a battery guru so I will let you guys help me out. I have a 80 lb terrova with two group 29 batteries powering it. I read where some get 9+ hours while trolling. The last few times I have gone out I am getting about 3 hours out of the darn thing. While trolling my power setting is between 6 and 8 typically. I occasionally bump it up to max. This seems short to me but I don't have anything to compare it to. Before the terrova I had a 70 lb motor guide with these batteries running in parallel. Never had an issue then. I keep the batteries topped off every time I come off the lake and I took them to get load tested and they came up good. Is it the batteries or is it the power I am drawing? For those that get 9 hours what setting are you using?