⚡ Monster Marine Lithium™ “Hyena”

12V • 50Ah Portable Bluetooth Deep Cycle Lithium Battery

Model: MML-CW1250B

Overview

Lightweight, portable, and powerful — meet The Hyena, your go-anywhere 12V power solution.
Designed for kayaks, small boats, go-boats and mobile power setups, this compact lithium battery weighs only 14 lbs, offering exceptional portability without sacrificing performance.

Built with advanced Lithium Iron Phosphate (LiFePO₄) technology, The Hyena delivers twice the power, a fraction of the weight, and four times the lifespan of traditional lead-acid batteries.
It’s the perfect fit for anglers, adventurers, and outdoor enthusiasts who need dependable power for their electronics, trolling motors, or portable setups.

With Bluetooth connectivity through the MMLithium App (iOS & Android), monitoring your battery’s status has never been easier.
Installation is simple — true plug-and-play operation — and you can wire up to four batteries in series for 24V, 36V, or 48V systems.

Key Features

⚙️ Ultra-Lightweight Design
At only 14 lbs, The Hyena provides incredible power-to-weight efficiency — ideal for kayaks, small vessels, or portable power boxes.

🔋 Reliable Deep-Cycle Power
Delivers 50Ah of steady power at 12.8V — perfect for fish finders, sonar units, and other sensitive electronics.

📱 Bluetooth Smart Monitoring
Monitor charge level, voltage, and performance directly from your phone with the MMLithium Bluetooth App.

🧠 Advanced LiFePO₄ Technology
Safe, stable, and long-lasting — with over 4000 charge cycles and consistent voltage under load.

🔌 Plug-and-Play Installation
Easy setup — connect your power leads, and you’re ready to go. Wire in series or parallel for expanded setups.

⚡ Charger Compatibility
Compatible with AGM marine chargers (use AGM setting):

Minn Kota (Precision & Digital)
Dual Pro
NOCO
Real Pro
ProSport

⚙️ Specifications

Category	Details
Weight	14 lbs
Dimensions (L × W × H)	7.5 in × 5 in × 6.5 in (195 × 130 × 154 mm)
Nominal Voltage	12.8 V
Nominal Capacity	50 Ah
Energy	640 Wh
Charge Voltage Range	14.6 V
Max Charge Current	50 A
Continuous Discharge Current	60 A max
Battery Chemistry	Lithium Iron Phosphate (LiFePO₄)
Cycle Life	4000+ cycles
Terminal Type	M8 Bolt
Configuration Options	Up to 4 in series for 48V max / parallel for more capacity
Bluetooth Functionality	Built-in Smart Monitoring via MMLithium App

⚓ Applications

Use Case	Compatibility
Primary Use	Portable power for 12V electronics, kayaks, and small trolling motors
Voltage Systems	Compatible with 12V, 24V, 36V, and 48V configurations
Suitable Motors	Minn Kota, Garmin, Lowrance, Rhodan, and similar
Other Uses	Fish finders, lighting, portable power boxes, camping, and outdoor setups
Replacement For	12V AGM or lead-acid batteries
Weight Advantage	Approximately 70% lighter than standard batteries

Monster Marine Lithium

Triple Bank 12v, 12v & 24v marine waterproof Lead/AGM-Lithium charger

12v 50Ah Deep Cycle Lithium Marine Battery "Hyena" - MML-CW1250

36V 60Ah Trolling Battery Bluetooth MML-3660B