Battery, Start Wet Sealed 12V CCA:800 12V MCA:1000 Size 27

Product Information

The Exide Nautilus 27MSXX is a high-capacity 12V marine starting battery designed for large outboard and inboard engines that require significant cranking power. As a Group 27 battery, it provides more starting power and a higher reserve capacity than the Group 24 model (24MSXX). 

• Cold Cranking Amps (CCA): 800 Amps at 0°F
• Cranking Amps (CA/MCA): 1,000 Amps at 32°F
• Reserve Capacity (RC): 180 minutes at a 25-amp draw
• Amp Hour (Ah) Rating: Approximately 98 Ah

Dimensions: 12.0″ L x 6.81″ W x 9.44″ H (some sources list height at 9 1/16″)

• Weight: Approximately 48.8 lbs
• BCI Group Size: 27M
• Chemistry: Flooded Lead Acid (Maintenance-Free Calcium/Calcium construction) 

Terminal Type: Dual system terminals featuring both standard SAE automotive posts and 5/16″ stainless steel threaded studs with hex nuts for easy accessory wiring.

• Vibration Resistance: Built with a heavier cast-on strap than standard automotive batteries to withstand the mechanical stress of rough marine environments.
• Portability: Equipped with a fold-down “suitcase-style” handle for easier carrying and installation in boat compartments. 
• Maintenance: Features an “accessible maintenance-free” design; while it uses calcium alloys to reduce water loss, it typically includes removable vent caps to allow for electrolyte level checks if necessary.