Optima BlueTop D31M group 31 batteries are our most powerful and have the largest energy storage capacity. Usually they can be mounted anywhere a (slightly shorter) group 27 would be used. Ultra high-performance Spiralcell AGM (absorbed glass mat) dual-purpose battery for marine and RV. Blue Top has 3x the cycling capability (rechargeability) with ultimate cranking power for your boat or RV in a maintenance-free package. Perfect for multiple high-demand accessories and trolling motors with 15x the vibration resistance and lighter weight Lower internal resistance provides more efficient power output and faster recharges.
The Optima model number for this battery is D31M. If you are replacing an Optima battery you already have, this model is the same as batteries marked 8052-161, 9052-161, 27931, D31M-1125, BLUED31M, 27551, SC31DM, or N99D31MBLUE
Reserve Capacity: 155 Mins
Ah Capacity (20hr Rate): 75 Ah
Terminals: Dual SAE & 5/16 Stainless Stud
Chemistry: Spiral AGM
INCLUDES FREE GROUND SHIPPING!
FULL FACTORY WARRANTY!
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