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Lithium Pros N31-24 25.6V 75Ah NMEA 2000 LiFePO4 Marine Trolling Battery

Manufacturer

Lithium Pros

<h3>About Lithium Pros</h3><p>Founded in 2011 and headquartered in Knoxville, Tennessee, Lithium Pros was built by a team of engineers, chemists, and racing enthusiasts who shared a single obsession: replacing outdated lead-acid batteries with the most advanced lithium-ion technology available. Rather than adapting existing battery designs, the company set out to engineer purpose-built solutions for the demanding worlds of motorsports, marine fishing, recreational vehicles, EV conversions, and fleet applications.</p><p>What separates Lithium Pros from commodity lithium suppliers is the depth of real-world experience behind every product. <strong>Their first lithium-ion batteries were 16V packs developed specifically for Pro Nitrous, Pro Mod, and Pro Stock drag racing applications</strong> — environments where weight, power delivery, and reliability are non-negotiable. That racing DNA carries through the entire product line today, with batteries that hold a higher voltage under load, recharge up to five times faster than lead-acid equivalents, and deliver up to three times the energy density in the same footprint.</p><p>The marine lineup is equally impressive. The flagship <strong>M Series</strong> and <strong>N Series</strong> LiFePO4 batteries are engineered specifically for tournament anglers and serious boaters, offering exclusive cold-weather functionality and — in the N Series — built-in NMEA 2000 connectivity that feeds accurate state-of-charge data directly to compatible multifunction displays. Some models are light enough to float, a testament to the extreme weight savings lithium chemistry can provide over traditional AGM or flooded lead-acid packs.</p><p>Lithium Pros also understands that a great battery is only as good as the charger keeping it healthy. Their lineup of <a href="/18968-lithium-pros-battery-chargers-201677">battery chargers</a> is purpose-engineered to match the specific voltage profiles and charge characteristics of their LiFePO4 cells, spanning 12V, 24V, 36V, and 48V configurations for both marine and racing applications. High-frequency designs deliver smooth, consistent output voltage that extends battery life over thousands of cycles, and universal AC input compatibility means they work equally well in the garage, at the dock, or in the pits.</p><p>Backed by a 60-day risk-free guarantee on every product and assembled and tested in Tennessee, Lithium Pros stands behind its technology with the confidence of a brand that has powered some of the fastest vehicles — and most productive fishing boats — in the country.</p>

Part Number

N31-24
08/24/2036 5:01 AM
Sale Price

$1,968.48

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Usually delivered within 2 days

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Product Details

The Lithium Pros N31-24 (also known as the N3175-24) is a 25.6V 75Ah Lithium Iron Phosphate (LiFePO4) marine trolling battery engineered for serious freshwater and saltwater anglers running 24V trolling motors. Delivering 1,920 watt-hours of energy in a BCI Group 31 form factor, this single battery replaces two conventional Group 31 marine batteries while weighing a fraction of the equivalent lead-acid setup.

A standout feature of the N31-24 is its built-in NMEA 2000 connectivity, making it part of the world's first series of lithium-ion batteries to achieve NMEA 2000 certification. The embedded BM-21 battery monitor broadcasts individual battery voltage, current, state of charge, time remaining, and temperature directly onto the vessel's NMEA 2000 network — keeping critical power data visible at the helm in real time. The BM-21 also logs warnings, alerts, and cumulative lifetime amp-hours with a real-time date stamp.

Key Features:

  • 25.6V / 75Ah LiFePO4 Chemistry — Stable, safe Lithium Iron Phosphate cells for long service life and thermal stability
  • 1,920 Watt-Hours — High energy density for all-day trolling capability
  • 145+ Reserve Minutes — Enough runtime for extended on-the-water sessions from daylight to dark
  • NMEA 2000 Certified — Broadcasts battery status data across compatible chartplotters and displays
  • BM-21 Battery Monitor — Real-time voltage, amperage, state of charge, time remaining, and temperature reporting
  • BCI Group 31 Form Factor — Fits standard Group 31 marine battery trays (13″L x 6.81″W x 8.43″H)
  • Lightweight Design — At approximately 27.5–32 lbs, dramatically lighter than comparable lead-acid batteries
  • 96% Charge Efficiency — Accepts charge current up to five times faster than lead-acid
  • 2,000+ Full Cycle Life — Long-term value with recommended 80% depth of discharge
  • Compatible with DC On-Board Charging — Pairs with Lithium Pros DC chargers (sold separately) for recharging via outboard engine charging system

The N31-24 is built for tournament-level performance in both freshwater and saltwater environments. Its Group 31 footprint makes installation straightforward in most existing battery compartments and trays. A 25.6V LiFePO4-compatible battery charger is required — do not use standard lead-acid chargers or de-sulfation modes with this battery.

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