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OPTIMA Batteries 8052-161 D31M Group 31 BLUETOP Dual Purpose (Deep-Cycle & Starting)
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 TECHNOLOGY® AGM (absorbent glass mat) dual-purpose battery for marine and RV.
BLUETOP® has three times 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 15 times 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.
Features
- Both dual-purpose and starting applications available
- Up to three times more recharges
- More than 15 times the vibration resistance
- Completely spillproof, mountable in virtually any position
- Maintenance-free
- Optimal starting power (Dual purpose and starting applications available)
Specifications:
- Cold Cranking Amps: 900
- Cranking Amps: 1125
- Nominal Voltage: 12 volts
- Open Circuit Voltage (fully charged): 13.1 volts
- Internal Resistance (fully charged): 0.0025 ohms
- Capacity: 75 Ah (C/20)
- Reserve Capacity: BCI: 155 minutes (25 amp discharge, 80°F (26.7°C), to 10.5 volts cut-off)
- Plate Design: High purity lead-tin alloy. Wound cell configuration utilizing proprietary SPIRALCELL TECHNOLOGY®.
- Electrolyte: Sulfuric acid, H2SO4
- Case: Polypropylene
- Case Color: Light Gray
- Cover Color: “OPTIMA“ Blue
- Group Size: BCI: 31
- Post Type: Dual SAE & 5/16 Stainless Stud
- Weight: 59.8 lb
- Length: 12.19
- Width: 6.56
- Height: 9.38
Warranty: 38 Months Free Replacement.
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