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Optima D31M BlueTop Dual Purpose Marine Battery

Item # 449530
Customer Rating:

Key Features

  • SpiralCell techonology is safer & more efficient

  • 15x more vibration resistance

  • Recharge faster and up to 3x as many times

  • Won't leak at any angle

  • Group 31

Our Price   $279.99

Availability: Backordered.
Expected back in stock soon.

  • Additional freight charge of $10.00 applies.
  • Additional discounts do not apply.
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Product Description
When compared to traditional marine batteries, Optima's Blue Top batteries run longer, recharge faster and up to 3x more, and provide more than 15x the vibration resistance. Ideal for those who need a sure-starting, strong cranking, maintenance free power source for their boat or RV. These high-performance, high-powered 12V batteries are designed with SpiralCell technology for superior vibration resistance and longer life. High-purity lead-tin alloy plates are wound with Absorbent Glass Mat Separators and tightly compressed into a cell tube that won't shed or break, even in severe conditions. There is no chance of leaking acid with a totally sealed battery like this. Lower internal resistance produces more efficient power output. Batteries are encased in polypropylene and use sulfuric acid as an electrolyte. Post Type: dual SAE & 5/16" Stainless Steel stud.

Dual Purpose Starting/Deep Cycle Batteries
Optima's most powerful group 31 battery with the largest energy storage capacity. Offering both starting and deep cycle capabilities, the D31M is designed for RVs or boats with large accessory loads. If you have a boat with a trolling motor or onboard electronics or if you're looking to power an RV with all the comforts of home that can drain battery power quickly, a BlueTop Dual Purpose Marine Battery is right for you.

If you are replacing an Optima battery, this model (D31M) is the same as batteries marked 8052-161, 9052-161, 27931, D31M-1125, BLUED31M, 27551, SC31DM, or N99D31MBLUE. Weighs 38.4 lbs. 12-3/16"L x 6-1/2"W x 9-3/8"H.
Model D31M
BCI Group 31
Cold Cranking Amps @ 0F 900
Cranking Amps @ 32F 1125
Reserve Capacity 155 min.
Capacity (C/20 rate) 75 Ah
Internal Resistance 0.0025 ohms
Dimensions 12-3/16" x 6-1/2" x 9-3/8"
Weight 59.8 lbs.

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by PowerReviews
Optima D31M BlueTop Dual Purpose Marine Battery

(based on 1 review)

Ratings Distribution

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Reviewed by 1 customer

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(1 of 1 customers found this review helpful)


Amazing Life

By Jon Spawnbelly

from Crescent City, Florida

About Me Advanced

Verified Buyer


  • Durable
  • Easy To Install
  • Reliable
  • Waterproof


    Best Uses

    • Large Boats
    • Outdoor
    • Small Boats

    Comments about Optima D31M BlueTop Dual Purpose Marine Battery:

    I was hesitant about buying such a high end battery.
    The problem is that I run through standard lead cell batteries very quickly...I have tried them all and even when running two at a time, they do not hold up.

    I decided to give it a try because a buddy of mine swears by them.

    I was made a believer after my first fishing trip.
    I ran the fish finder, live well and trolling motor off of it from 5 am to 2:45 pm and when I got home to put it on charge, It was only at 45%...I was amazed, it is the only battery I will ever use again.

    • Was this a gift?:
    • No

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