Description
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.
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