Here is my take on them. I have been using Everstarts in my guide boat since I bought it...like yours mine came with them. I have had to replace the cranking battery twice in 8 years.

I replace the trolling motor batteries every spring. Twice I have had to replace an Everstart within 3 months after installing. I am on the water basically every day, all day, from the 1st of March thru the end of November. In other words I give them a workout.

The key on making any battery last is maintenance. The first thing I do when I back my boat into the driveway at the end of the day is to plug my charger in. I check the water levels once a week.

Now, are the Everstarts better batteries than Optimas or other higher priced brands...not likely...but they serve my purpose and I know that if I do have a problem wally world is close and I can have a new one real quick, for free, 24/7.

Note: I change them out every 12 months...they have an 18 month warranty...I haven't paid for a new trolling motor battery in 8 years.