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.

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.

I'm just now replacing my 2, Duracell group 27 deep cycle marine batteries that run my 24v trolling motor, from 5-2018. And I'm only replacing them because I'm about to spend 4 days fishing and don't want to take a chance of them not holding up, considering they're 6 years old. I keep them on a 3-bank charger year round, keep the water levels up, and only use my boat about 8 times throughout the season. No complaints on these batteries and I just hope the new ones hold up as well as the old ones did!

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!!!!!

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 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.

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.

This was installed in summer of 2019....but disconnected with bass boat in storage. Kept battery tender attached thru 2020 and boat was used very little. May of 2021,out of storage and attached to boat...and battery was totally dead in a few hours...did not hold a charge....for more than a few hours...