I've only had this battery installed in a 2001 Jeep Grand Cherokee almost two months so I cannot speak of its long term performance. I chose this battery based on reviews about AGM technology. The unit is maintenance free and has no trouble cranking the 4.7 litre V8 with over 190,000 miles on it. I've not done any "stress tests" on the battery. I think that would be a foolish thing to do. The battery does what I want it to do when I want it done. Yes, it does cost a lot more than a conventional battery of the same size but Sam's had the best price of any other local vendor. Maybe I'll update the review in a year or so regarding long term performance.

Cranking my diesel like a big dog. Batteries are as expected. Service was a delightful surprise. I pre-ordered on line and they were waiting for me at the front as promised.

Easy to put in, Ive only had them 3 weeks. Not much to say. nice carrying handles, easy to put in, fit my vehicle perfectly. Seems to be working well. so far.

Great battery, dependable and long lasting. Just what is needed for cars

Easy to install and the price was very reasonable

Recent purchase but everything is well so far. Good cranking power.

This hard winter killed the 2 OEM Ford batteries on my F250. While this battery was a little pricey, I took the plunge on AGM batteries. Easy install and good fit. It was nice not worrying about getting battery acid on anything. Battery is clean and easy to handle. Starts strong and reliably. Of course the real test will be longevity, but so far happy with the purchase and performance.

I needed a new battery for my 2009 Ford Explorer with a 4.6 liter V8. After doing a bit of research I found that the batteries sold at Sam's Club are made by East Penn Manufacturing in the United States and sold under the Duracell name. These are a high quality battery which are priced very competitively. I purchased and installed this Group 65 AGM battery to replace my previous AGM battery from a different manufacturer which lasted for over six years and hope to get similar results from this battery. I have found that it is definitely worth spending a few extra dollars over the long run for the peace of mind and longevity that you receive from a top quality AGM battery.

Winner winner chicken dinner! This battery certainly doesn't have longevity (mine failed 2 yrs, 6 months) in APRIL of 2021, but otherwise it's great! How many times have you had something fail JUST outside the warranty....happens all the time, right? Not the case with this battery! My truck started missing starts (it would crank but not start on the first go)- it always starts on the first try. That prompted me to hook up my tester to find that both the batteries in my Dodge diesel were far below the 750CCA rating- one tested at 562CCA and the other at 426CCA. So off to Sam's I went and got them replaced under warranty. When new, your vehicle will crank faster than with a flooded type. The other bonus is no leaky battery terminals to corrode your wiring. These batteries lived a pretty easy life as there are no temperature extremes where I live. It'll be interesting to see how long the warranty replacements last. In summary, they failed under warranty, gave me warning and didn't leave me stranded, and didn't have any leaks.

I’m looking at all the positive reviews on this battery and I’m wondering if I have a defective one. It only lasted me 4 months. I will be taking it back for warranty. The purpose of buying this battery was that I would not have to go through this hassle.