Fished another tourney where my outboard did not start, but stayed on my trolling motor and spotlocked a few times winds were 10 to 15 ENE after 8 hours in the tourney I still had 70% battery life in my lithiums try that with a lead acid battery...lol and no getting weaker as theday went on just as strong at 3pm as they were at 7 am. Glad I made the change ,just wish I could run one on my outboard but cannot...