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Customer reviews for Duracell AGM Deep Cycle Marine and RV Battery, Group Size 34M for
Duracell AGM Deep Cycle Marine and RV Battery, Group Size 34M
3.5 out of 5 stars
stars
53 ratings39 reviews
  1. 5 stars57% (30)
  2. 4 stars4% (2)
  3. 3 stars4% (2)
  4. 2 stars6% (3)
  5. 1 star30% (16)

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Showing 1-10 of 39 reviews
Jun 10, 2019
SHAGS
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Works Well

We just bought two more for our trolling motor. We previously bought the same battery for our 140 Suzuki outboard and it has held up great for the past year. We haven't had a chance to run the boat much this year but if we have any problems I will come back and update.

Helpful?47N1DHR3AD0W8399630002
Jul 2, 2020
Scott
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Hallett 210 starting battery for mercury 502

Boat meets the CCA for my starting battery on my mercury 502 big block, just installed beginning of 2020 season but I have been able to let it sit for 2 or 3 weeks and it starts right up every time.

Helpful?47N1DHR3AD0W8399630002
Jul 5, 2026
John
5 out of 5 stars
5 out of 5 stars review

Superb service

I just pulled two of these from my RV with a manufacturing date of 11-19. They both tested PERFECTLY. This is statistically unusual as 7 years is the extreme limit of their duty lifespan. I plan to replace them as a precaution.

Helpful?47N1DHR3AD0W8399630002
May 9, 2019
941CATFISH
5 out of 5 stars
5 out of 5 stars review

A bargain on a quality battery

I bought one of these batteries 10 years ago and use it in my boat that runs some electronics and also serves as the starting battery. It's maintenance free and takes vibration in the boat well. AGM batteries charge faster and last longer than most others and do not discharge if left unused as lead acid batteries do. I have an onboard battery charger on my boat that gets plugged in to recharge two trolling motor batteries and this one, all are AGM. It only takes a few hours. The alternator on my outboard really is enough to keep this one charged as I run charters in my boat. I'm replacing this one with a new one just for preventive maintenance. The only other battery I would consider is a lithium battery, but the expense of them is quite high, but if a light battery is one you want, that would be it, otherwise this Duracel AGM battery is an excellent choice.

Helpful?47N1DHR3AD0W8399630002
Sep 3, 2025
Bill
5 out of 5 stars
5 out of 5 stars review

Quality AGM Marine batteries.

A great deal on quality AGM Marine batteries. The negative reviews are most likely due to using an incorrect battery charger. AGM batteries have a much lower internal resistance compared to sealed lead-acid. Typical chargers run as much current as the battery will accept since the high internal resistance moderates the amount of current. If AGM is charged with a regular charger (no AGM setting) the charger will use too much current when charging and damage the battery with each charge cycle.

Helpful?47N1DHR3AD0W8399630002
Apr 9, 2023
Gator
5 out of 5 stars
5 out of 5 stars review

Still going…

Bought two of these in May 2018. 5 years and still work fine. Tempted to keep running them but I run offshore so I am replacing for maintenance reasons. Boat sits sometimes for 3 weeks or longer and no issues with battery. If over 3 weeks no use I connect on board NOCO gen3 charger overnight.

Helpful?47N1DHR3AD0W8399630002
Dec 22, 2020
John
2 out of 5 stars
2 out of 5 stars review

Tests "fine" but won't last

I bought two of these for a trolling motor with spot lock which pretty much continuously runs the motor when you're stopped. For 15 months they worked flawlessly in windy conditions or not. Could stay out all day and not run out of charge. Then one day they ran out of juice before the day was over. This was despite being faithfully put on the on board two bank charger with smart charging (includes trickle charge) every time I came back from fishing. I tried them again three times, including using another charger in case it was my on board charger that was bad. No luck. I take them back to Sam's and say, "They take a charge but run out of juice so fast they are of no use." The guy tests them on some high tech tester and says. "They test fine, I can't warranty them." So realizing that he has no authority to disregard the "test", I just buy two more batteries. So ultimately this is like taking your phone in and saying the phone battery dies after a full charge after 2 hours. They test it and since it works initially on a full charge, they have to say, "It tests fine." Yeah, let me take you out on the lake 2 miles from shore and we'll shut off the outboard and we'll see about your "tests fine" after you paddle us back. My experience is the warranty is probably only valid if the battery won't take a charge, not if it isn't suitable for purpose. That being said, I don't know that another brand battery would be better, I just realize the warranty is pretty worthless.

Helpful?47N1DHR3AD0W8399630002
Mar 12, 2026
Rick
1 out of 5 stars
1 out of 5 stars review

Disappointment!

Purchased the battery on August 2025 and completely dead on February of 2026. Battery will not take a charge. It shows 12.45 volts after charging for 24 hours with a NOCO 10-amp charger and had only 8.5% of the required amps. Battery was also connected to a trickle charger since new. Very disappointed with this battery. I have other brands deep cycle batteries on my two RV's and my other boat going to 5 years with no issues. I do not recommend these batteries.

Helpful?47N1DHR3AD0W8399630002
Oct 30, 2021
Richard
1 out of 5 stars
1 out of 5 stars review

This Battery is bad, bad, bad

I bought two of these in March 2020 for my boat. I installed them in April and they worked very well for a while. The first one went bad just before the 18 warranty expired. The Sam's Club battery tester kept saying that the battery was fine, but it was not. I spent about three hours arguing with them and making them retest the battery. Finally they replaced the battery, just to get rid of me. The second battery went bad a month after the warranty expired, so I'm out of luck. I've never seen batteries that will not even last two years. I will not buy them again.

Helpful?47N1DHR3AD0W8399630002
Feb 9, 2022
jpm
1 out of 5 stars
1 out of 5 stars review

One dead at 25 months

I purchased two in Jan 2020 to replace flooded wet cell batteries that were 3 years old. I was hoping the AGM would have longer life. WRONG! The 'house' battery is dead at 25 months. The alarm on the chart plotter is set at 12.3V, roughly a 50% charge. Draw on the battery while fishing is the livewell, stereo and marine radio. Last 2 times out fishing the alarm goes off only 30 minutes after shutting the motor off. Going back to flooded wet cell; cheaper and lasts longer.

Helpful?47N1DHR3AD0W8399630002