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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 energy and motorsport enthusiasts on a single, clear mission: bring the highest-performance, ultra-lightweight lithium-ion batteries to the marine, racing, EV, fleet, and specialty markets. The people behind Lithium Pros aren't just engineers — they're competitors. The team includes drag racers, drifters, off-road racers, SPL and SQ audio competitors, alongside experienced chemists and machinists who understand exactly what it takes to build a battery that performs under real-world punishment.</p><h3>What Sets Lithium Pros Apart</h3><p>The core of every Lithium Pros product is Lithium Iron Phosphate (LiFePO4) chemistry — a stable, high-density cell technology that delivers meaningful advantages over traditional lead-acid batteries. Lithium Pros batteries are approximately three times the energy density of comparable lead-acid units, meaning more power in a dramatically smaller and lighter package. In fact, some models are light enough to float — a genuine advantage for both racing weight reduction and marine buoyancy safety.</p><p>Beyond sheer power density, Lithium Pros batteries hold a higher terminal voltage under load than lead-acid alternatives, translating to hotter ignition, faster cranking, and more consistent current delivery to onboard electronics and accessories. Their LiFePO4 cells are also rated for over five times the charge cycle life of standard lead-acid batteries, and they accept charge current up to five times faster — meaning less downtime between runs or on the water.</p><p>Lithium Pros has earned a proven reputation in competitive motorsport, with a history of use in SCCA World Challenge, Formula Atlantic, drag racing, and more. That same performance DNA carries directly into their marine lineup, which is trusted by many of the world&apos;s top professional anglers.</p><h3>Lithium Pros Product Categories</h3><p>The Lithium Pros catalog is focused and intentional. Their <a href="/18968-lithium-pros-batteries-200137">Batteries</a> lineup spans marine trolling batteries, starting batteries, and racing packs across multiple voltages and capacities — each engineered for a specific application. For anglers, boaters, and racers who demand reliable power management, Lithium Pros also manufactures a complete line of purpose-built <a href="/18968-lithium-pros-battery-chargers-200141">Battery Chargers</a> designed specifically for LiFePO4 chemistry, available in 12V, 16V, 24V, and 36V configurations. These high-frequency chargers are not afterthoughts — they are engineered alongside the batteries themselves to ensure proper charge profiles and maximum cycle longevity.</p><p>For powerboat owners and tournament anglers who need dependable starting power, Lithium Pros offers dedicated <a href="/200366-engine-batteries-lithium-pros-18968">Engine Batteries</a> built to meet or exceed current outboard manufacturer specifications, including compatibility with modern alternator systems. Whether you&apos;re replacing a heavy group-31 AGM with a single lithium unit or upgrading a racing application to a 16V system, Lithium Pros has a solution engineered specifically for the job.</p><h3>The Lithium Pros Commitment</h3><p>Every Lithium Pros product carries a 60-day risk-free guarantee, reflecting the brand&apos;s confidence in its engineering and materials. For racers, anglers, fleet operators, and EV builders who refuse to compromise on power and weight, Lithium Pros represents a technically serious, competition-proven alternative to legacy battery technology.</p>

Part Number

N31-24
09/12/2036 11:51 PM
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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