Optima 8052-161 BlueTop D31M AGM Marine & RV Battery – 12V 900 CCA

The Optima 8052-161 BlueTop D31M is a high-capacity 12V dual-purpose AGM battery designed for both marine and RV deep-cycle and engine-starting applications. With 900 cold cranking amps, 1,125 cranking amps, a 75Ah capacity and 155-minute reserve capacity, it is built for applications that need strong cranking power along with substantial energy storage.

Optima's SpiralCell Technology AGM construction provides maintenance-free, spill-proof performance with excellent vibration resistance and faster recharging. The D31M is one of Optima's largest-capacity BlueTop batteries and is well suited to boats, RVs, trolling motors and systems with multiple high-demand accessories.

Features

• Dual-purpose deep-cycle and starting battery
• Designed for marine and RV applications
• 12V electrical system
• 900 cold cranking amps
• 1,125 cranking amps
• 75Ah capacity
• 155-minute reserve capacity
• BCI Group 31 / D31M configuration
• AGM Absorbed Glass Mat construction
• Optima SpiralCell Technology
• Standard top posts plus threaded stud terminals
• Up to three times the cycling capability
• More than 15 times the vibration resistance
• Completely spill-proof construction
• Mountable in virtually any position
• Maintenance-free operation
• Low internal resistance for efficient power delivery
• Faster recharging capability
• Suitable for trolling motors and high-demand accessories
• Limited 24-month free replacement warranty

Specifications

• Brand: Optima
• Manufacturer Part Number: 8052-161
• Series: BlueTop
• Model: D31M
• BCI Group Number: 31
• Battery Type: RV & Marine Deep Cycle / Starting
• Electrolyte Type: AGM (Absorbed Glass Mat)
• Voltage: 12V
• Amp Hour Capacity: 75Ah
• Cold Cranking Amps: 900 CCA
• Cranking Amps: 1,125 CA
• Reserve Capacity: 155 Minutes
• Terminal Location: Top
• Standard Terminal: Standard Top Post
• Threaded Terminals: 3/8"-16 and 5/16"-18 Studs
• Length: 12-3/16"
• Width: 6-9/16"
• Height: 9-3/8"
• Application: RV & Marine
• Marine: Yes
• Universality: Universal
• Condition: Brand New
• Product: Genuine Optima Battery Product

Compatibility

The Optima BlueTop D31M is designed for compatible marine and recreational vehicle applications requiring a large Group 31 battery with both deep-cycle and starting capability.

Typical applications include:

• Boats and marine electrical systems
• Recreational vehicles
• Trolling motors
• Multiple onboard accessories
• Inverters and higher-demand electrical equipment
• Applications requiring both repeated cycling and strong engine-starting power

Important Fitment Information

Battery compatibility should not be determined by application type alone. Before ordering, verify that your installation requires a Group 31 battery with the correct terminal layout and that the battery tray can accommodate the approximately 12-3/16" L x 6-9/16" W x 9-3/8" H dimensions.

The D31M uses both standard top posts and threaded stud terminals, so confirm that your cable connections are compatible.

Important

This is a dual-purpose battery, intended to provide both deep-cycle performance and dependable engine-starting power.

Warranty

Backed by a limited 24-month free replacement manufacturer warranty, calculated from the original battery purchase date.