I replaced my Interstate batteries that ran my 36V Terrova last year, and am now running the Sears Platinum version AGM’s. With all the high water and fast current last year, I had a couple incidents where I had two half-day trips. The batteries were fine for an A.M. trip, but would peter out halfway through the P.M. trip (not really fair to the second trip folks)
The positive: Changing to the Sears Platinum version extended my run time on my Terrova big time! They are an Odyssey battery without the Odyssey price tag. Fantastic performance.
The Negative: They are absurdly heavy! They weigh an additional 75 Lbs more than the Interstate batteries did. They live in the back of my boat, and that absolutely changed the way my boat handled and got on plane. I had to add a whale tail to counteract the additional weight, and that did effectively solve the problem. New Ranger 620’s have the batteries in the floor (where they belong) but one of those is currently not in the budget….