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:

• 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:

• 12V Trolling Motors

• Marine Electronics

• Ice Fishing & Kayak Setups

• Golf Carts (36V or 48V systems using multiple batteries)

• Off-Grid Solar & Outdoor Power Systems

• Replacement for Group 31 SLA Batteries

Compatible Chargers:

Works with AGM-capable chargers such as:

• Minn Kota (Precision & Digital)

• Dual Pro

• NOCO

• Real Pro

• 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