DieHard Platinum Marine Battery - Group Size 31M (Price with Exchange) —
After replacing wet cell batteries for deep cycle use in my boat about every two years, I finally bought this PM-2 Diehard. It is absolutely awesome. The wafer-thin separators mean there are no acid leaks, no fluid to refill, and Diehard can pack a lot more working power into the same size package.
Discharge capacity is awesome, especially compared to the old wet cell I was used to. And, the Diehard generally costs less than Lifeline and other AGM batteries.
I'm tired of replacing boiled-out lead acid batteries. From now on I'm going only with the Diehard Platinum.