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Optima D31M BlueTop Dual Purpose AGM Battery Group 31

Manufacturer

Batteries

<h3>About Midstate Battery</h3><p><strong>Midstate Battery</strong> has built its reputation as one of New England's leading independently owned and operated battery specialists. With the guiding philosophy that <em>&quot;Batteries for Everything&quot;</em> is more than a slogan — it's a promise — the company has spent decades delivering reliable power solutions for virtually every application imaginable, from everyday passenger vehicles to heavy commercial equipment and specialty markets.</p><p>Founded in 1986 and led by owner Steve Merone and his son Steve Jr., Midstate Battery has assembled a staff with more than 100 years of combined industry experience. Whether a customer needs help matching a legacy battery, configuring a custom cable assembly, or identifying the right chemistry for a demanding deep-cycle application, the team's expertise is always accessible. The company stocks over 25,000 different types of <a href="/7249-batteries-batteries-201357">batteries</a> and battery-related products, covering automotive, commercial, marine, and specialty segments.</p><h3>A Wide-Ranging Battery Selection</h3><p>What truly sets Midstate Battery apart is the sheer breadth of its catalog. The company distributes first-class batteries from the industry's most respected names, including East Penn, Lifeline, NorthStar, Optima, Power-Sonic, and Odyssey. It also carries exclusive house lines — the Midstate™ and Sportsman™ brands — spanning marine starting, marine/RV dual-purpose, and marine/RV deep-cycle applications.</p><ul><li><strong>Automotive Batteries:</strong> A wide selection for standard cars, stop-start technology vehicles, and classic car applications.</li><li><strong>Marine &amp; RV Batteries:</strong> Wet cell, AGM, gel, pure lead, and lithium options designed for rough waters and remote roads alike.</li><li><strong>Commercial Batteries:</strong> High-capacity units built for construction equipment, HD vehicles, and commercial fleets.</li><li><strong>Golf Cart &amp; Deep Cycle:</strong> Personalized, one-on-one service to match the right deep-cycle battery to your specific cart or equipment.</li><li><strong>Specialty &amp; Industrial:</strong> Hearing aid, cordless phone, sealed lead acid, and countless other specialty cell formats.</li></ul><h3>Quality, Value, and Personalized Service</h3><p>Midstate Battery's commitment to quality goes hand in hand with competitive pricing and a customer-first mindset. The team works hard to keep the most common battery types in stock for same-day pick-up, and when a rare or custom battery is needed, they source it and get it to the customer when and where it's needed. For anyone who needs a reliable, knowledgeable partner for all things battery-related, Midstate Battery stands out as a trusted destination.</p>

Part Number

D31M
07/12/2036 11:21 PM
Sale Price

$635.57

In Stock (10+)

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Usually delivered within 2 days

free shipping

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Optima D31M BlueTop is a high-performance dual-purpose AGM battery engineered for both reliable engine starting and demanding deep-cycle applications in marine and RV environments. This Group 31 battery delivers exceptional power with 900 Cold Cranking Amps and 1125 Marine Cranking Amps, making it ideal for boats and recreational vehicles with large accessory loads.

Key Features:

  • Patented SPIRALCELL Technology provides 15 times more vibration resistance than conventional lead-acid batteries
  • Up to twice the life and 3 times more recharges than traditional marine batteries
  • 75 Ah capacity with 155-minute reserve capacity at 25 amp discharge
  • Maintenance-free AGM design with spill-proof construction
  • Can be mounted in virtually any position
  • Dual SAE and 5/16-inch stainless steel stud terminals
  • Fully charged, can sit unused for up to 12 months at room temperature
  • Superior starting power in the initial seconds compared to conventional batteries

The D31M features Absorbed Glass Mat technology with precision-wound spiral cells, ensuring consistent performance even during discharge. Its durable polypropylene case withstands harsh marine conditions and constant vibration. Perfect for powering trolling motors, fish finders, electronics, and accessories while providing dependable starting power.

Products specifications

Ah

75

Battery Group

31

Cranking 30 Seconds

1125

Reserve Capacity

155

Size

12-13/16" x 6-9/16" x 9-3/8"

Easy, customer-friendly online shopping. I am satisfied.

Autoplicity always has the lowest prices and they ship extremely quickly!

easy to order, least expensive for same item selling elsewhere for up to50 more, plus shipping. Great site will use again

Best price fast shipping. will deffinitly order again

The ordering process was easy and the price of the product was fair. I was; however, disappointed with one thing. I received an email from Autoplicity for 25% off shipping but it would not work when I was checking out. I called the customer service number and the gentleman was not helpful at all.

thanks

Autoplicity has an abundance of name brand parts at unbeatable prices. Customer service was also great to deal with. Receipt and tracking info was provided promptly.

quick and easy with extremely fast delivery

Product was as described. Came very quickly...thanks.

Fast shipping even around the holidays and the cheapest price I could find on my Thule t2 bike rack I would buy here again

Good price

Best price for the optima battery I needed for my boat, I will definitely add this site to my favorites.

Lowest price on the Internet. Fast shipping.

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