⚡ Monster Marine Lithium™ “Beast 2.0”
1500CCA • 170Ah Dual Purpose Bluetooth Cranking Lithium Battery
Model: MML-15170JB
Overview
Introducing The Beast 2.0 — reengineered, redefined, and ready to dominate.
This upgraded version of our original Beast cranking lithium battery delivers more power, more capacity, and the most advanced performance system we’ve ever built.
With 1500 cold cranking amps (CCA) and 170Ah of usable energy, The Beast 2.0 combines extreme cranking capability with deep-cycle endurance — perfect for running today’s most demanding marine electronics, pumps, and accessories all day long.
Built to meet and exceed Mercury Marine’s latest specification bulletin, this battery has been tested extensively across a wide range of outboards and in professional tournament conditions for years.
Compatible engines include:
Key Features
⚙️ Dual Purpose Design
Built for both cranking and deep-cycle operation — start large outboards and run high-demand electronics from a single battery.
⚡ Unmatched Cranking Power
With an impressive 1500 CCA, The Beast 2.0 can start even the toughest motors in cold conditions or heavy electrical load scenarios.
🔋 Extended Deep Cycle Capacity
Features 170Ah of usable energy — easily supports multiple graphs, sonar units, shallow-water anchors, lights, pumps, and more.
📱 Bluetooth Smart Monitoring
Monitor voltage, charge level, and overall battery health in real time with the MMLithium Bluetooth App.
🧠 Advanced BMS Protection
Equipped with our latest-generation Battery Management System, tuned for modern 4-stroke engines — protecting against surges, overcharging, and deep discharge.
🧭 Compact Group 31 Fitment
Engineered to fit directly into standard Group 31 trays as a true drop-in replacement.
🪛 Built to Perform
Made with Grade A LiFePO₄ cells for superior consistency, safety, and performance longevity.
⚙️ Specifications
| Category |
Details |
| Weight |
39 lbs |
| Cold Cranking Amps (CCA) |
1500 |
| Dimensions (L × W × H) |
13 in × 6.8 in × 8.66 in (330 × 173 × 220 mm) |
| Nominal Voltage |
12.8 V |
| Nominal Capacity |
170 Ah |
| Energy |
2176 Wh |
| Charge Voltage Range |
14.6 V |
| Continuous Discharge Current |
200 A max |
| Terminal Type |
Top Post & M8 Bolt Combo |
| Battery Chemistry |
Lithium Iron Phosphate (LiFePO₄) |
| Cycle Life |
4000+ cycles |
| Bluetooth Functionality |
Built-in Smart Monitoring via MMLithium Bluetooth App
|
⚓ Applications
| Use Case |
Compatibility |
| Primary Use |
Starting and deep-cycle operation for marine engines |
| Suitable Engines |
2-Stroke & 4-Stroke outboards (Mercury, Yamaha, Suzuki, Evinrude, etc.) |
| Electronics Support |
6+ graphs, Mega 360, Livescope, shallow-water anchors, pumps, lights, and more |
| Parallel Configuration |
Add additional batteries for higher capacity |
| Replacement For |
12V AGM or lead-acid batteries |
| Mounting |
Direct Group 31 drop-in fitment |
