Bought 4 of these to replace flooded-type (wet cell) deep cycle batteries - the four are wired parallel to support a power inverter that I use to run the 110V air conditioning on my boat. Things were always finicky with the wet cells and in Okla. heat, required constant checking/filling water. This is a GREAT PRICE for this size AGM marine battery -- if it holds up as it should. So far (several weeks) working GREAT - no problems. Much better choice for a boat that sees some rough chop on a big lake.

These AGM batteries outperform my previous lead acid batteries by a large margin. Previously my voltage was down below 12 volts in the morning. With the AGM batteries, I was never below 12.3 volts. The price at Sam's Club was substantially lower than any other supplier and in stock. I also purchased a starting battery which was also a good value. It was easy to change my Xantrex 40 amp battery charger from flooded to AGM.

I use this battery to power an inverter for back up on my sump pump. Boaters and RV owners rave about the cost as it is 25% less then any AGM battery of this size, on the market. Sears offers a 24 month warranty, Sam's an 18 month. But for the savings, well worth the difference. Be prepared for a $15 - $16 core charge if you have no old battery to turn in. This is common practice for all car batteries no matter where they were purchased.

Purchase this battery March of 2014 and it's been connected nonstop on a solar system with 200 watts of solar power. The winter time it sits for a couple months on the trickle charge. now on the 6th year it's still provides a decent amount of power for my 300w pure sine wave inverter. I'm going to give it another year or two but I'm going to buy another of the same battery simply because of how the dependable and long lasting this has been. Also note this batteries sits out in the elements for the past 6 years and has showed very little sign of any kind of plastic or UV degrade.

Lots of juice, keeps my bass boat’s large electronics and livewell running all day long, and reliably cranks the engine to bring me back to the dock.

So far so good! These replaced the two wet cell batteries for our 24' RV. Easy to install and so far so good on performance!

This is the very same battery that is sold by Marine supply stores for a little over $300. The manufacturer is the same but sold under a different brand.

Lasted 2 years 1 month. Full warranty for 18 months and not prorated after that. Kept well charged and maintained whole life. I’ve had cheaper batteries with better warranties. Why does the automotive battery have a 3 year but not this one?

December, 2019 - Purchased 2 AGM marine 31DT batteries for 24vt minnkota trolling motor. Lightly used and regularly charged, maintained with onboard battery system. September, 2021 - Both dead and not accepting charge.

Purchased two of these batteries for my 2009 Winnebago motor home 04/2013. Now after 27 months neither battery will accept/hold a full charge. Expected a little more life for the price.