Monster Marine Lithium | 12v 344Ah Lithium Deep cycle MML-12344B Bluetooth
12V 344Ah Lithium Deep Cycle Battery – Bluetooth | MML-12344B
Massive Power. Maximum Reliability. Built to Go the Distance.
If you're searching for a powerhouse battery that can keep up with even the most demanding energy needs—look no further. The MML-12344B Mammoth is a 12V 344Ah Lithium Deep Cycle Battery engineered with Grade A LiFePO4 cells, an advanced Battery Management System (BMS), and rugged internal architecture built to handle the harshest environments.
Whether you’re powering a high-draw trolling motor, outfitting a solar storage system, or upgrading your RV or golf cart, the Mammoth delivers reliable, long-lasting energy—cycle after cycle.
Why Choose the MML-12344B?
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Massive Capacity: 344Ah of steady, high-efficiency power
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Longer Lifespan: Over 4,000 charge cycles—up to 10x longer than SLA
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Durable & Safe: Built with a premium LiFePO4 chemistry and advanced BMS
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Bluetooth Monitoring: Track voltage, state of charge, and more from your phone
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Flexible Configuration: Series or parallel ready for custom power setups
Ideal For:
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All 12V Electronics (preferred for voltage stability)
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12V Trolling Motors
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Minn Kota, Garmin, Lowrance, and Rhodan Motors
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Off-Grid Solar Systems
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Golf Carts (36V & 48V systems supported)
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RV & Camper Power Systems
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Boats with high energy demands
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Electric Vehicles & Mobile Power Stations
System Configurations
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Connect up to 4 in series for 24V, 36V, or 48V
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Connect in parallel for increased capacity—unlimited expandability
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Compatible with AGM-mode chargers including:
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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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Pro Sport
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Chargers must support AGM charging profiles.
Specification
Weight
61 lbs (27.6Kg).
Size Dimensions
L 13.5 in (343mm) x W 7.25in (184mm) x H 9.75 in (247mm)
Voltage
12.8V
Energy
4,403 Watts (Wh)
Amp-Hours
344Ah
Charge Volts
14.6v
Continuous Amps
150A max
Terminals
F12 terminals (post that screw in).
Are Solar Guys Pro Authorized Retailers?
Yes! We are proud to be one of the few online retailers who are authorized retailers for every single product we carry!
When Will My Order Ship?
Most orders ship within 1–3 business days. You’ll get a tracking number as soon as it ships via email!
Do We Accept Returns?
Yes absolutely, we have a no-hassle, 30-day return policy on all items! To refer to the full policy, click HERE
Are Products Brand New?
Yes! All products on Solar Guys Pro are 100% brand-new and in perfect condition.
We do not sell any used or refurbished items.
Frequently Asked Questions
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