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Customer reviews for Duracell Marine Deep Cycle Battery, Group Size 27 for
Duracell Marine Deep Cycle Battery, Group Size 27
3.8 out of 5 stars
stars
66 ratings49 reviews
  1. 5 stars55% (36)
  2. 4 stars12% (8)
  3. 3 stars6% (4)
  4. 2 stars9% (6)
  5. 1 star18% (12)
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Showing 1-10 of 49 reviews
Jan 19, 2017
Jerryjay11
5 out of 5 stars review

Verified Purchase

Dependable batteries

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.

Helpful?1CUQ0N61KUBN8399630033
Sep 17, 2017
Pego
5 out of 5 stars review

Verified Purchase

Great product

Both 2 for our RV, works great, no problems

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Aug 8, 2025
markandy61
5 out of 5 stars review

Verified Purchase

Good battery, good service

I've used this battery twice while fishing on a trolling-motor-only lake with my 17-foot bass boat, and it has gotten me around the lake just fine.

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Apr 7, 2026
TIM
5 out of 5 stars review

Outstanding especially for the price.

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.

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May 19, 2026
Aaron
4 out of 5 stars review

Dual purpose battery-starting and cycling

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!!!!!

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Feb 11, 2023
Gary N Shelia
4 out of 5 stars review

As good as any $100 deep cycle battery

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.

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Dec 12, 2015
BURNER
4 out of 5 stars review

Over 3 years life on these 27DC Marine Batteries

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.

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Jun 30, 2020
Colohunter
3 out of 5 stars review

Verified Purchase

Warranty

12 month warranty!

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Nov 7, 2025
Schmitty
2 out of 5 stars review

Verified Purchase

Doesn’t come charged

Not charged

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Mar 19, 2022
Bj
1 out of 5 stars review

Absolute JUNK!!!

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.

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