Monster Marine Lithium | 12v 100Ah Bluetooth Deep Cycle Lithium Marine Battery Group 31
12v 100Ah Bluetooth Deep Cycle Lithium Marine Battery – Group 31 | MML-12100B
Built for Power. Engineered for Performance. Trusted by Pros.
The MML-12100B 12v 100Ah Deep Cycle Lithium Battery is the ultimate lightweight power upgrade for trolling motors, marine electronics, and outdoor power systems. Weighing just 24 lbs, this Group 31 drop-in replacement delivers twice the power, four times the lifespan, and up to 60% less weight than traditional lead-acid batteries.
With Bluetooth connectivity, you can monitor your battery’s voltage, charge level, and performance in real-time through our iOS & Android app—giving you confidence and control from launch to dock.
Key Features:
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Group 31 Case Compatible
Fits all standard Group 31 battery trays—no retrofitting required. -
Lightweight & Powerful (24 lbs)
Save weight without compromising runtime or capacity. -
Smart Bluetooth Monitoring
View live battery stats from your mobile device with our Monster Marine app. -
Advanced LiFePO4 Technology
Delivers over 4000+ charge cycles with safe, steady power output. -
Plug-and-Play Simplicity
Just connect your trolling motor’s positive and negative leads—no complicated setup. -
Expandable Power
Wire in series (up to 48V) or parallel to increase total capacity.
Ideal Applications:
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12V Trolling Motors
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Marine Electronics
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Ice Fishing & Kayak Setups
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Golf Carts (36V or 48V systems using multiple batteries)
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Off-Grid Solar & Outdoor Power Systems
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Replacement for Group 31 SLA Batteries
Compatible Chargers:
Works with AGM-capable chargers such as:
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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
Ensure the charger supports AGM mode for lithium compatibility.
Specification
Weight
24 lbs (10.8Kg). 60% lighter than 1 SLA battery!
Size Dimensions
L 13 in (330mm) x W 6.77in (172mm) x H 8.66 in (220mm)
Voltage
12.8V
Energy
1280 Watts (Wh)
Amp-Hours
100Ah
Charge Volts
14.6v
Max charge current 100A
Continuous Discharge Amps
100A max
Terminals
M8 Stainless Bolt
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We do not sell any used or refurbished items.
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