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OPTIMA

OPTIMA® Batteries D34M BLUETOP® Dual Purpose Boat and RV Sealed AGM Battery

  • Based on 1,469 reviews
Condition: New
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Availability: Only 10 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Aug 31
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Features

  • BATTERY SPECS: 12-Volt, 750 Cold Cranking Amps, Size: 10.06" Length x 6.88" Wide x 7.94" Tall, Weight: 43.5 pounds, Dual SAE & 5/16" Stainless Steel Stud Posts, C20 Capacity: 55 AH, MCA 870
  • RESERVE CAPACITY of 120 minutes for constant performance. Faster charging capabilities.
  • SPIRALCELL TECHNOLOGY: SPIRALCELL TECHNOLOGY with 99.99% pure lead delivers more power and consistently outperforms conventional flat-plate batteries. Optimal starting power even in bad weather.
  • LONG LASTING: Fifteen times more resistant to vibration than standard flooded battieres for durability and Up to 3 times longer life vs. standard flooded batteries.
  • DUAL PURPOSE & MAINTENANCE FREE: Dual purpose for both deep cycle and starting applications. Maintenance Free for maxium convenience.

Description

The OPTIMA D34M BLUETOP is designed as a dual purpose battery, both starting and deep cycle for people who need a sure-starting, strong cranking, and maintenance free power source for their boat or RV, even in harsh conditions. The unique spiral cell design provides a strong and clean power source, ensuring the safety of you, your family and the environment. The higher reserve capacity gives you a longer shelf-life to give you the power when you need it, where you need it. This battery is designed to be used with recreational vehicles or boats with large accessory loads. Refer to the user guide for troubleshooting steps. Up to 3x longer life and maintenance-free. Spillproof, mountable in virtually any position. More than 15 times the vibration resistance of standard flooded batteries. Best choice for supporting high electrical demands.

Brand: OPTIMA


Vehicle Service Type: Boat


Size: 10 x 6-7/8 x 7-13/16 inch


Voltage: 12 volts


Battery Cell Composition: Lead Acid


Item Weight: 43.5 pounds


Product Dimensions: 6.88"D x 10"W x 7.81"H


Number Of Cells: 6


Terminal: Marine Terminal


Item Highlight: High Performance Deep Cycle and Starting Battery, 750 CCA, Dual Terminal, Maintenance Free, Versatile Mounting See more


Compatible with Vehicle Type: Boat


Voltage: 12 volts


Number Of Cells: 6


Terminal: Marine Terminal


Automotive Fit Type: Vehicle Specific Fit


Size: 10 x 6-7/8 x 7-13/16 inch


Item Weight: 43.5 pounds


Item Dimensions D x W x H: 6.88"D x 10"W x 7.81"H


Battery Type: Lead Acid


Brand Name: OPTIMA


Manufacturer Part Number: 8016103


Model Number: 8016-103


Manufacturer: OPTIMA


UPC: 811405001031 721112819815 721112767376


Global Trade Identification Number: 15, 31


Number of Items: 1


Included Components: Battery


Item Type Name: lead_acid_battery


Manufacturer Warranty Description: 24-month guarantee


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 31

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Over 10 years!
Style: Single
It has been 10 years and 2 months now since we bought this battery. Put it on the boat every spring and took it off every fall. We’ve kept it on a trickle charger over the winter each year. Last week was the first time it didn’t start right up. Still not sure if it’s completely dead, but to go for over 10 years on a boat is pretty darn impressive. The other cool thing about this battery is that you can use a paddle board inflator without the boat being running. Not many boat batteries can do that! Love this battery and hopefully we can keep it going for a bit longer. If not, I’ll buy this same one again. ... show more
Reviewed in the United States on July 19, 2026 by Susan Downs
    • The BEST
Style: Single
These batteries are amazing and lighter than standard batteries and last way longer. I use them on an electric motor while fishing and it's the best, last all day.
Reviewed in the United States on July 28, 2026 by Mike Aguilar
    • Update: OK, customer service doing the right thing
Style: Single
I bought this battery a bit over 1 year ago (on May 2023). Even after completely charging the battery on an OPTIMA charger, the battery would barely crank over a 20 hp outboard motor. I should have tried to return the battery then, but it still worked (barely), and I needed it for the boat. In Nov 2023 the battery was placed on an OPTIMA charger over the off season. Once again, this spring, the battery is still weak. The battery is not much better than the OPTIMA battery I replaced which I used for 9 years! Very disappointed and I will not be purchasing OPTIMA batteries again. UPDATE: I called customer service and explained the problem, and they will honor the warranty. Following the phone conversation, I got an email that said: We will need a picture of your proof of purchase and a picture of the bar code on the side of the battery Put your case # in the subject line and email to [email protected] I have yet to send in the info, but it seems like I will be able to get a replacement (I'll update here if I do not) So, great Optima customer service! (I knocked off one star as I did receive a faulty battery) Last update: Replacement battery just arrived!! Added back a star ... show more
Reviewed in the United States on July 8, 2024 by Joe V
    • I GOT A BAD BATTERY
Style: Single
I purchased this battery in FEBRUARY 2012, I put it in my small camper and it has never worked quite right and has acted strange. It would show a full charge and then slowly start to lose its charge over the next 24 hours, it ran everything fine but only for about 1/4 the time you would normally expect. I finally had the time to track down the problem thinking it was my fault in the wiring somewhere, I never thought the brand new Optima battery would be bad. So I finally tested the battery outside the system, and low and behold I have a faulty battery. I called Optima because it is still inside their 24 month warranty. They told me to take it to O'Reilly auto parts and have it tested and get a printout of the results (which said replace battery) and then I would need to return it to Amazon and that they Optima would not do the replacement. I called Amazon and they said they would ship me out another one since it was still under warranty -no charge and due to the difficulty of returning the old battery, they said keep it. ... show more
Reviewed in the United States on September 16, 2013 by nikolatesla
    • Works perfect!!!! Heid up all day
Style: Single
Much lighter than a walmart battery so far so good, we will see if it holds up with a all day fish, I will update later Upadate 4/20/16 Used this 8 hours on a 52 lb minn kota, It was windy and I used it hard hard figured it would go down before I left the lake, I was afraid it would not start my 25 hp motor, At end of day my trolling motor has a gage to check battery reserve and it said 3/4 full is that impossible so I had another battery checker and it checked 3/4 full can that be true, can that light of a battery hold that kind of reserve, If this is true and I guess it is,this is the only battery I will ever have. Finally something that gets me thought the day and I can carry from the boat that does not weigh a ton, I will update if things change. Update 5/3/16. Ok had it out 11 hours used hard hard, showed 12.2 volts, check with meter showed 1/2 charge left, unbelievable only battery I will own know matter the cost. Will update after a year 5/1/17 Ok bought a bigger boat with a older foot controlled trolling motor, the battery. We fished and used it from 9:00 am until 8:00 a 11 hour day of pretty much nonstop. After about 11 hours battery died. I still am very happy, if I had to do it over I would of bought the D31M check it out. It has 75 ah. That would have enough to run the day. Just a thought. It not that much more to buy the 31. My friend has a 31 and has had it for years maybe 6 or 7. Still works perfect. ... show more
Reviewed in the United States on April 15, 2016 by Donald Lilly
    • Best Marine Battery !!
Style: Single
This is the ONLY battery you'll ever see in my boat !! Holds a charge a long time and can go the distance running lights and sound system for hours then still crank the boat up like a boss. I keep a tender on it all winter, then in Spring it fires my boat right up like it was brand new !!
Reviewed in the United States on November 28, 2025 by Amazon Customer
    • Good battery so far; Only on the water 2 months
Style: Single
Just bought in July 2024 to replace a dead AGM. Battery seems to hold a 12.4v charge when I do not have the battery charger on the boat run. I drained the charge in 2 weeks with just the marine radio idle - not on - which was surprising. But, did let me know the Guest 10 amp charger was toast ( it lasted a surprising 20 years). Running two Humminbird Helix units, starts a Yamaha 150 hp 4-stroke and all boat accessories. Have hit it pretty hard with say 6 hours on the sonar units and so far so good. Will report back, but seems like a good battery and alternative to the newer lithium batteries. ... show more
Reviewed in the United States on August 19, 2024 by Redfield
    • Awesome Battery
Style: Single
I read a lot of details on the Optima battery line before purchasing this one back in February 2015 for my old CJ-7. I've had a lot of bad battery experiences through life and this time I decided I was going to pay the extra and get a high quality battery. I wanted a good mix of cranking power and long reserve for camping situations and after seeing so many good posts in various Jeep forums I went with an Optima BlueTop. I can say this BlueTop battery has been worth every penny so far and I expect to get well more than my money's worth out of it. This battery easily spins my 4.2L endlessly anytime I'm doing work on it without ever seeming to indicate it's had any drain at all. I've jumped numerous other vehicles off, run lights all night camping, etc. and never noticed the drain. I even accidentally let the battery drain itself dead from a small wiring short. It was left completely drained and dead for 4 full months and all I had to do was run a slow trickle charge for a couple of days and it charged right up and churns like new still with no issue. ... show more
Reviewed in the United States on October 14, 2015 by Chris Ozgolith

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