Lithium Pros M31-24 Bluetooth Marine Trolling Battery Batteries - 25.6V 75Ah LiFePO4

Product label may vary. Lithium Pros is transitioning to new labels and part numbers; the item you receive may carry either the previous or the updated label.

The Lithium Pros M31-24 is a 25.6V 75Ah LiFePO4 lithium iron phosphate marine trolling battery built in a BCI Group 31 form factor. Designed for freshwater and saltwater anglers running 24V trolling motors, this single battery replaces two traditional Group 31 AGM batteries — delivering more usable power in a significantly lighter and more compact package.

Featuring integrated Bluetooth connectivity, the M31-24 pairs with the Lithium Pros LP Battery View app to provide real-time monitoring of state of charge (SoC), voltage, amperage, and battery temperature directly from your smartphone.

Key Features:

• 25.6V / 75Ah LiFePO4 Chemistry — Stable lithium iron phosphate cells for safe, reliable high-capacity output
• Bluetooth BMS Monitoring — Real-time data via the LP Battery View app including SoC, time remaining, voltage, and temperature
• BCI Group 31 Form Factor — Drop-in fit for standard marine Group 31 battery trays
• Replaces Two AGM Batteries — One M31-24 delivers the equivalent output of two Group 31 lead-acid batteries
• Up to 5x Faster Recharging — Accepts charge current significantly faster than lead-acid batteries
• Over 5x Cycle Life — LiFePO4 chemistry provides dramatically longer service life vs. standard lead-acid
• 96% Energy Efficiency — Converts input energy to stored energy at 96% efficiency vs. approximately 75% for lead acid
• Sustained Voltage Under Load — Holds higher voltage while loaded for consistent trolling motor performance all day

The M31-24 is an ideal upgrade for bass boats, bay boats, flats skiffs, and pontoons where weight savings and runtime are critical. A 25.6V LiFePO4-compatible battery charger is required for proper charging.