i went looking for batteries for my trolling motor the other day and came across batteries and then deep cell batteries i was told to use deep cycle batteries for trolling what is the difference in a trolling battery or a deep cycle battery are the the same

If it say TROLLING on the side, True Trolling batteries are deep cycle.  If it says cranking/trolling or cranking/deep cycle, it's a dual purpose battery but will still work.

The only difference between the dual purpose and deep cycle batteries when used as a trolling battery, would be the percent of repeated draw down that can be acheived without doing damadge to the battery.

Dual purpose or hybrid = apx 50%

True deep cycle = apx 80%

great thanks for your help guys