I own a CTC Nautilus Deep Cycle Battery, 750 mca, Amp Hour Capacity: 103 , for 4 yrs now and it hasn't let me down yet..at a price of $120 you can't go wrong..It's mainly used when I get up to the remote back lakes for trout to power my 40lb Minn Kota Maxxum motor on my 12' tinny....I've gone 3 days (trolling) without having to change the battery....the only negative feedback I have is:......MAN, IS IT HEAVY to lug around...either that, or I'm gettin older and it just seems like it's heavier