Monster Marine Lithium 12V 120Ah Slim Bluetooth Lithium Deep Cycle Marine Battery MML-12120SB (w/ bluetooth)
Product details
| Management number | 236434299 | Release Date | 2026/07/09 | List Price | $254.70 | Model Number | 236434299 | ||
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⚡ Monster Marine Lithium™ “Barracuda”
12V • 120Ah Deep Cycle Marine Lithium Battery
Model: MML-12120SB
Overview
Meet The Barracuda — compact, efficient, and built to deliver reliable long-lasting power for your 12V electronics and trolling motor systems.
Weighing in at only 32 lbs, this lithium battery replaces bulky lead-acid batteries while cutting overall weight by more than half. Housed in a Group 24 case, The Barracuda provides high-capacity power in a smaller footprint — perfect for anglers who want maximum performance without sacrificing space.
Built with Lithium Iron Phosphate (LiFePO₄) technology, this battery offers twice the power, a fraction of the weight, and four times the lifespan of standard sealed lead-acid batteries.
Installation is simple: — true plug-and-play performance.
Need more power? Wire up to four batteries in series for 24V, 36V, or 48V systems.
Key Features
⚙️ Lightweight & Compact Design
At just 32 lbs, The Barracuda is easy to install, transport, and maintain — without compromising output.
🔋 High-Capacity Power
Delivers 120Ah of energy with consistent voltage for smooth operation of trolling motors and marine electronics.
🧠 LiFePO₄ Technology
Advanced chemistry provides steady voltage, improved safety, and an extended lifespan of 4000+ cycles.
📱 Bluetooth Smart Monitoring
Monitor charge status, voltage, and health in real time using the MMLithium Bluetooth App.
🔌 Simple Installation
Plug-and-play setup — easily connect in series or parallel for larger system configurations.
⚡ Charger Compatibility
Compatible with most AGM marine chargers (AGM setting required):
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Minn Kota (Precision & Digital)
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Dual Pro
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NOCO
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Real Pro
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ProSport
⚙️ Specifications
| Category | Details |
|---|---|
| Weight | 32 lbs |
| Case Size | Group 24 |
| Dimensions (L × W × H) | 10.25 in × 6.5 in × 8.2 in |
| Nominal Voltage | 12.8 V |
| Nominal Capacity | 120 Ah |
| Energy | 1536 Wh |
| Charge Voltage | 14.4-14.6 V max |
| Max Charge Current | 100 A |
| Continuous Discharge Current | 120 A max |
| Battery Chemistry | Lithium Iron Phosphate (LiFePO₄) |
| Cycle Life | 4000+ cycles |
| Terminal Type | M8 Brass Bolt |
| Configuration Options | Up to 4 batteries in series for 48V max |
| Communication | Built-in Bluetooth monitoring |
⚓ Applications
| Use Case | Compatibility |
|---|---|
| Primary Use | Deep cycle power for 12V electronics and trolling motors |
| Voltage Systems | Compatible with 12V, 24V, 36V, and 48V configurations |
| Suitable Motors | Minn Kota, Garmin, Lowrance, Rhodan, and other trolling motors |
| Additional Uses | Fish finders, graphs, pumps, and auxiliary marine systems |
| Replacement For | 12V sealed lead-acid (SLA) and AGM batteries |
| Weight Advantage | Over 60% lighter than traditional batteries |
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