Optima D31M Battery, Deep Cycle Blue Top

Part Number

Looking for a reliable battery for your marine or recreational vehicle? The Optima D31M Battery is the perfect choice. With a battery capacity of 75 Ah, cranking amps of 1125 CA, and cold cranking amps of 900 CCA, this battery is designed to deliver exceptional performance. Absorbed Glass Mat ensures long-lasting durability and reliability. Whether you're out on the water or hitting the road in your RV, the Optima D31M Battery is built to handle the demands of your adventures. Trust in the quality and performance of Optima Battery.

Power up your marine and RV adventures with the Optima D31M Deep Cycle Blue Top Battery, designed for dependable deep-cycle power. Ideal for boats, RVs, and off-grid applications, this battery provides strong, stable power for all your electronics and accessories. The D31M Blue Top features Optima's patented SpiralCell technology, offering efficient charge retention and high recharge capabilities, perfect for sustained energy requirements. Its durable, spill-proof construction withstands harsh conditions and vibrations, ensuring long-lasting performance and safety. Equip your vehicle with the Optima D31M Blue Top for reliable power where you need it most!


Group Size




Amp Hour

Optima D31M Features & Benefits

  • Faster Recharging Capabilities - 3X Quicker than Flooded
  • Maintenance-Free
  • Fully Sealed, Non-Spillable, Mount in Almost any Position
  • 15x More Vibration Resistant than Standard Flooded
  • Shock Resistant
  • Spiralcell Technology
  • 99.99% Pure Lead
  • Up to 3x Longer Life than Standard Flooded

Spiralcell Technology

  • Each lead plate is manufactured as a continuously cast strip that maintains critical thickness tolerances
  • The two plates get a proprietary separator (this key component is actually made of a micro-fiberglass blend that feels like fine cotton) that performs two critical functions: keeps the two plates from touching, and holds the electrolyte in a uniform suspension
  • The unique manufacturing process of spiral winding continuous lead plates is far more precision-controlled and expensive than building traditional flat-plate AGM batteries. Custom automated cell-winding machines are required to maintain the close tolerances required to maintain quality and performance
  • Each completed SPIRALCELL ends up looking somewhat like a precisely wound “jelly roll.” Critical tolerances, temperatures, humidity and automated processes are maintained and constantly monitored
  • OPTIMA batteries' precision-molded cylindrical cases are manufactured to such tight tolerances that only virgin polypropylene can be used. This ensures perfect and uniform compression once the SPIRALCELL is inserted and also avoids any potential contaminants or impurities from pre-used plastic
  • 12 Volt OPTIMA batteries are made of six SPIRALCELL cells, each having a fully charged open circuit voltage of 2.2 volts for deep-cycle batteries and just over 2.1 volts for starting batteries OPTIMA has built more than 100 million individual spiral cells since the early 1990s. No one knows how to build the highest quality and best-performing spiral-wound batteries better than OPTIMA.
More Information
Part Number D31M
MPN 8052-161
UPC 7 21112 92060 3
Battery Voltage 12 Volt
Cranking Amps 1125 CA
Cold Cranking Amps 900 CCA
Capacity 75 Ah
Reserve Capacity Minutes 155 Minutes
Battery Group Size Group Size 31
Battery Type Deep Cycle
Battery Chemistry Absorbed Glass Mat
Length 12-13/16"
Width 6-9/16"
Height 9-3/8"
Weight 59.8 Lbs
Warranty 2 Years
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