12V 120Ah Bluetooth Lithium Deep Cycle Marine Battery – MML-12120B

Maximum Capacity. Smart Monitoring. Built for Marine Power.

The MML-12120B is a 12V 120Ah Bluetooth Lithium Marine Battery built for serious anglers, boaters, and outdoor enthusiasts who demand reliable power and real-time monitoring. Weighing just 33 lbs and housed in a Group 31 case, it’s a lightweight, high-performance solution with LiFePO4 (Lithium Iron Phosphate) technology at its core.

Stay in control with Bluetooth monitoring—view voltage, capacity, and status directly from your smartphone using our free iOS or Android app. Whether powering electronics or a trolling motor, this battery delivers twice the power, four times the life, and about 60% less weight than traditional lead-acid batteries.

Key Features:

• High Capacity – 120Ah
  Extended run times for long days on the water.

• Bluetooth Monitoring
  Track real-time battery health and status via smartphone.

• Group 31 Drop-In Fit
  Perfect replacement for most marine battery compartments.

• Super Lightweight (33 lbs)
  Easy to transport, install, and reduces onboard weight.

• Advanced LiFePO4 Chemistry
  Safer, longer-lasting, and more efficient than SLA batteries.

• Built-In Capacity Display
  Instantly see charge level right on the battery.

• Plug-and-Play Installation
  Just connect positive and negative cables—no complex wiring.

• Series Capable
  Wire 2 or 3 batteries in series for 24V or 36V systems, maintaining 120Ah capacity.

Ideal For:

• 12V Trolling Motors (All Major Brands)

• Kayak & Fishing Electronics

• RVs, Boats, and Off-Grid Systems

• SLA Group 31 Battery Replacements

• Long-Lasting Outdoor Power

• 4000+ Charge Cycles for Years of Use

Charger Compatibility:

Use any AGM-compatible charger from trusted brands like:

• Minn Kota (Precision & Digital)

• Dual Pro

• NOCO

• Real Pro

• Pro Sport

All chargers must support AGM mode.

Specification

Weight
33 lbs (14.9Kg). 60% lighter than 1 SLA battery!

Size Dimensions
L 13 in (330mm) x W 6.77in (172mm) x H 8.66 in (220mm)

Voltage
12V

Energy
1560 Watts (Wh)

Amp-Hours
120Ah

Charge Volts
13.8v

Continuous Amps
100A max

Terminals
F12 terminals (post that screw in).