I got a good deal with a discount on Epoch 12v 100ah batteries for my trolling motor. they have an easy to setup and use bluetooth app. I have fished for as many as 5 days trolling constantly for 4 to 6 hours and finally got below 40%. I ran several long stretches intentionally on 10 with my ultrex just to see the performance and what it would do to the % left. They are awesome.
I recommend