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DieHard Platinum Marine Battery Group Size 31M (Price with Exchange)
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DieHard Platinum Marine Battery Group Size 31M (Price with Exchange)

Item# 02850131000P | Model# 50131 | Added on October 21, 2010
(50 Ratings) Join or Sign In to rate this
$289.99
$231.99
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Description Specifications
Sail Into the Horizon With the DieHard Marine Battery Size 31m The Group Size 31m battery is the ideal companion for your boat when you want to break free and enjoy quiet moments on the sea. It has a high reserve capacity of 205 minutes which ensures you will be safely ashore even in an emergency. This maintenance-free battery features an Evolution Technology that adds to its functionality and durability. Suitable for recreational and marine vehicles, the battery has a long off-season storage time, so you can just crank up and speed away.
The DieHard Marine Battery Size 31m has tin-coated brass terminals and 99.99 percent pure virgin lead plates, that make it durable, powerful and reliable. Safety first design features a non-spillable and sealed design with an Absorbed Glass Mat construction. These glass mats are instrumental in keeping the acid in place to make the battery vibration-resistant and easy to mount. Sail away on a sunny day or as the rain lashes at the shores with this weather-resistant battery.

  • Maintenance-free this Group Size 31m battery is ideal for use on your recreational marine vehicle
  • Features 1150 CCA that delivers quick ignition
  • Container is made from high-quality polycarbonate/polyester
  • Has a long off-season storage power and a reserve power of 205 minutes
  • An AGM construction offers the battery longevity and mounting flexibility
  • The battery is vibration-resistant and sports a military-grade construction
  • Item Weight: 75 lbs.
  • Dimensions: 13"(L) x 6.8"(W) x 9.5"(H)
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Overall Rating:

Average:
(50 Ratings)
  • 5 Stars
    (39)
  • 4 Stars
    (4)
  • 3 Stars
    (1)
  • 2 Stars
    (3)
  • 1 Star
    (3)
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Most Helpful Reviews:

Praise
18 found this review helpful
by Likensrus
December 29th, 2008
excellent

What can I say. I got tired of battery's lasting two years. I bought this battery soley to run my trolling motor for my canoe. I use a Minn Kota 55lb Endura motor. On my first canoe trip this year I was able to go 2 and a half days on a charge. That equaled 30+ miles of river. I did paddle some but I also went back up stream through good fishing holes. It holds a charge like no other battery I have ever owned and that includes the days of bass boats and bass tourneys that I have gladly left behind. Thanks for a great product - Butch from Ohio

Criticism
19 found this review helpful
by xsboca
April 21st, 2012
Platinum AGM Grp 31 Battery

My Sears AGM Platinum Grp 31 battery has lasted 1 yr 3mos of light duty. It has a hard time holding it's charge and over a 4 hour period of fishing falls to `12.4 volts unless I run the 250 Merc from time to time to keep it charged up to to 12.5 or 12.6 volts. At 12.4 volts the engine starts sluggishly. The only thing pulling current is my Lowrance GPS. Sears says the battery is good but O'Reilly Automotive says it has a bad cell. Meanwhile, I am out almost $300.00 with a "Free 3 Year Replacement Warranty." Sears in Fayetteville, Arkansas says they won't replace it unless it says "Bad" on their equipment. Some warranty! Now What!!!!!!

Reviewers may have received a benefit, like a sweepstakes entry or rewards program points, in exchange for writing a review.
Those benefits were not conditioned on the positive or negative content of the review.
Mogman

Awesome battery - wait for sale

Not much to say, it started my truck engine in the coldest, longest winter I ever knew. The only drawback is it's really heavy. Getting it into the engine bay requires lots of effort and care. It needs some sort of handle or strap to do this alone. Plus I only had a few tenths of an inch to spare in my Tundra battery box.

April 18th via sears.com
0 of 1 found this review helpful.
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Scottandee

7 years and still going

Own fishing boat. Bought 2 of these in April 2007. One for starting and one for trolling motor. Use at least 10 to 15 times a season. Never ever had an issue. I keep an on board charger on them when parked during season and pull them in the fall and keep on a charger all winter. I just bought a new starter battery now as I feel safety is important. 6 miles out and I really want to get back to dock with out worry. Still using the trolling battery. Worth every penny.

April 4th via sears.com
0 of 4 found this review helpful.
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reibe

Best ever

Listen people and listen carefully,Sears sometimes sells things that are of poor quality,but not this time ,I have had this battery on my winch equipted 4x4 truck for almost a year now it has gone from Dallas,Texas to Emery,South Dakota and also sunny Florida without any glitches,oh yeah its a marine battery but it works great on high demand vehicles you know.

March 12th via sears.com
1 of 1 found this review helpful.
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Battyep

Platinum marine 31 m battery

I have three in my boat. Large amp stereo and takes a lot to start this boat I have. I don't see how this battery could **** out, unless you are charging it wrong with the wrong type charger. I go out every Saturday for over two years and never had problems.huge heavy battery but never have to worry. Does take a while to charge but no issues. Starts every time and I run stereo loud all day long while not running boat.

February 28th via sears.com
2 of 2 found this review helpful.
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fishing4crappie

great battery

I have had two of these battery's for five years i do alot of trolling with a 24volt trolling motor i have fished for 8-10 hours of constant use and they have never let me down

February 12th via sears.com
4 of 4 found this review helpful.
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Bushrat

Good while it lasted

But it didn't last. The battery is door nail dead after four years. I was running it in my old Land Cruiser, no winch, just the engine and normal stuff. Considering how much I spent, and the size of this battery, I would think it would last longer. I've had Optima batteries do better.

January 23rd via sears.com
1 of 2 found this review helpful.
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FTB530

Going to purchase

I want to know why any one thinks if they get a three year replacement warranty and they have to use it after a year ,why do you expect a new three year warranty when they replace it with a new battery ? i have a Die Hard Marine Battery i have used since 2008 never a problem and it has set and not been used over every winter,i had to charge it once since i had it,I purchased one of the Optima batteries at Sears and it didn't last two weeks, took it back and got the Die Hard and not a problem yet,so no i will buy this one for my other boat i am rebuilding.

January 20th via sears.com
0 of 2 found this review helpful.
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Ljb83

Battery failed in less than 2 yrs

Failed in less than 2 yrs. more disappointing was the way the warranty works. I received a new battery but the new battery only has 15 months of the warranty left. You'd think that a new battery would carry the 3 year warranty. This may be the industry standard but it isn't right. Wasn't even offered a chance to buy back the 21 months of warranty. Won't deal with sears again.

December 5th, 2013 via sears.com
3 of 3 found this review helpful.
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openock

Outstanding. Shipped direct from manufacturer.

Best value for the price. Made by a first class facility right here in the USA. Shipped directly to me from the factory. Outstanding performance as house and starting batteries on a diesel engine boat.

October 17th, 2013 via sears.com
1 of 1 found this review helpful.
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Ricochet001

Not Recommended

I bought 2 of these for my boat 2 years ago. Last year the first battery failed and replaced just before the 1 year anniversary. 2nd battery failed yesterday and is beyond the 1 year warranty. Average product life is 1 year, give or take a month or 2.

August 28th, 2013 via sears.com
1 of 7 found this review helpful.
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Dansterpower

Excellent

I use these for off-grid power when the commercial power goes off line. I power three 27" LED Computer Monitors, a Computer, external hard drives and cable/dsl modems via an inverter. These are excellent batteries and well worth the money.

July 24th, 2013 via sears.com
6 of 6 found this review helpful.
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captrichard

great battery

replaced gel batterys in my sailboat with the diehards.I hooked them up@started my engine@they did not blink. I hope they last like this.

March 6th, 2013 via sears.com
2 of 6 found this review helpful.
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RGimmel

Great deep-cycle marine battery

Purchased two years ago, and this DieHard Platinum outlasts and outperforms any battery I've ever had in my boat. Much cheaper than the identical Odyssey PC2150. Virtually maintenance free. I'm buying three more.

March 1st, 2013 via sears.com
4 of 4 found this review helpful.
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JAMES CLARK
February 27th, 2013
Bradley Beaudette
February 25th, 2013
Tia Aguas
February 22nd, 2013
Dev Patel
January 11th, 2013
RYDOGG2992

Great Audio Batt!!!

I use this as a second battery for my rockford t1500bd my amp pulls 150amps and this battery stays at 14.1-14.4 while my system is on it rests at 12.9V.... My screen name is also my youtube you can see it on my american bass amp too.

January 10th, 2013 via sears.com
5 of 7 found this review helpful.
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FUCKFYUCL

Purchased as emergency back up for DC pumps

Used twice before it died. I am returning to Sears today. If it is not exchanged. Reads less than 5v. Charged on alternate rapid charger as last resort. Will be left at Sears if out of warranty. COMPLETE WASTE OF MONEY!!! Read other reviews to confirm amount of duds on PM1 models

January 8th, 2013 via sears.com
0 of 5 found this review helpful.
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LadyMiles
October 31st, 2012
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John Hammond
Promotion for 15% off. Need the coupon code
by John Hammond 
March 18th, 2012
DEBRA MILLER
Why can't I use the MOMSDAY promo on clothing I am trying to order today?
by DEBRA MILLER
April 21st, 2013
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