Originally Posted by
grizwilson
DO NOT power a Ulterra with lithium. Been there done that got the Tshirt. I have lithium on my lake boat and they are great....with the Ultrex. I tried them in my river jet with the ulterra.... The ulterra worked great for about 4 hours, then next stop would not deploy.... due to low battery.... battery not actually low just the way the ulterra sensed them. I went back to AGM no more issues, also moved the batteries to the back gave me 3mph and I like the way the boat sits better. Another suggestion, IF the Ulterra would ever fail to stow...DO NOT follow the instructions in the manual. If followed the Ulterra will need dealer service. The TM is only held on by 4 bolts, just pop the side covers off and remove them. Most issues are power related. Best of Luck and Congratulations on the new ride.
g