Purchased three a year ago for my bass boat and they are going strong. Purchased two more recently for my camper trailer to run in parallel for longer lasting power so that we may boondock for longer periods.

Replacing the 2 trolling motor batteries I purchased 5/2019 only because they are not fully charging. They are as good, or better, than any battery I have ever used for trolling at a much better price. Buying 2 more as peak Redfish season is here and I plan to cover miles of water.

I honestly can't believe how great these batteries have been. I bought two of them in 2020 and put them in my camper. They get charged while boondocking on 2 - 100 amp solar panels and then on the basic built in charger for the camper when at home. No special treatment or maintenance given since bought, they lasted up until the end of last summer (2025), and I'll be getting another set in the next couple of weeks to kick off this season. Even better considering when I bought them they were on sale for $69.

After hours of recon and a call to Duracell. This appears to be mislabeled as a "Deep Cycle" and is in fact a Dual-purpose (Starting and Cycling) marine battery. Duracell confirmed the specs match exactly to their dual-purpose battery specifications. 888-844-7704 call to confirm they are aware of the issue. Hope this saves other hours of your time!!!!!

I have used these Duracell Marine Batteries for the past several years. I use them in gangs of two per group, a total of 6 batteries for 12V power backup systems with 120V inverters. About 2008 I purchased two of these and they lasted just short of three years with weekly trickle charging, and usage maybe 15 to 18 times a year running them down to 50% remaining charge. in 2011 I purchased 4 units, set them up with Duracell battery maintainers, and they were used probably 20 times a year, from 30% to 50% discharge. My units that were purchased in 2011 just gave up the ghost a few months ago.. over 3 years operation as standby energy with the battery maintainers hooked to them. Monthly water addition required of course. Not too shabby for $80 deep cycle batteries. I have friends who spent the giant bucks for Optimta's, barely got 18months life from them, a few just over 1 year. What can I say, when you need reliability, stick with Duracell. I am treating myself to a christmas present of 6 new 27DC group Duracell Marine batteries... I believe these are an excellent purchase, as long as you keep them properly maintained and excercised.

SMH crazy reviews from people that think a deep cycle battery will last for 5 to 10 years. They used to be warrantied for 6 mo. and I would buy my trolling mtr batteries in the Spring to be assured I could get through the season. Be sure the new battery is full after 1st charge, top off with acid after that use only distilled water to top off cells. Many complain they fail too soon even when kept on a maintainer. Always check the liquid level often, charging causes them to evaporate, again use only distilled water. Charge fully before storage and if possible keep in temperature controlled environment, they can freeze at below zero temps. Heat is a big killer of lead acid batteries too. Some batteries will last more than 5 years like the one on my gate with solar charger, have filled it every year though. Some only last a year or two but if the user does some simple research on care' it will increase your chances of longer battery life. Don't blame the battery! After all it is only warranted for 12 mo.

If I were to invent a battery that could stand up to a 36 month battery warranty I’d be a multi-millionaire. I have two boats, one has a huge house bank of 6 marine lead cell and 2 AGM’s for starting. The other has one AGM starter and 3 lead cell for trolling. Needless to say I seemed to be buying a battery every other month for some reason. Tried the Everstarts and they are terrible, lasting maybe 13 months at best. Tried Deka and had even worse results with them going out annually but they had a 18 month warranty. Then switched to Duracell from Sam’s and have had no trouble for the past 2 1/2 years. So far I’ve switched all on the large boat to Duracell and this weekend replaced the last P0S everstart on the smaller boat to Duracell. I hope these continue to work well for me and highly recommend. I will never give 5 stars because that would be the non-existent lifetime battery that we’re all searching for.

I recently purchased two of these batteries for my RV. Duracell has a good reputation but I was surprised and disappointed they were shipped with very little fluid as both were more than an inch and a half below the top of the plates. I understand they are shipped low to avoid spillage during transport and handling, but these were too low. After filling and charging they seem to be working as expected, but it's way too early to give them a proper evaluation one way or the other. Ask me again in two years. Sams click and pull system worked well.

Purchased July 2020. First time out with small trolling motor it registered at 25% after charging and struggled to turn the motor. I figured it was my error and charge again. On try number two, despite reading full, it powered the motor less than five minutes and quickly showed as depleted. Likely bad cells out of the factory. Very poor showing for Duracell quality control. I've lost confidence in their products. Paying a bit more for a more reputable product going forward.

Kept on high dollar battery maintenance device.Literally never took motorhome on a trip after installation. Dead short both batteries in 13 months. May have been used 2-3 times for simply turning lights on in motorhome to do semiannual checks. STAY FAR AWAY. TOTAL AND ABSOLUTE JUNK... ZERO STARS RATING.