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Lithium Pros M31-36CK 36V Marine Lithium-Ion Trolling Battery Kit with DC Charger

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

M31-36CK
09/13/2036 9:47 AM
Sale Price

$2,071.10

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Usually delivered within 2 days

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Product Details

The Lithium Pros M31-36CK is a 36-volt lithium-ion marine trolling battery kit designed for anglers who demand lightweight, high-performance power on the water. Built around Lithium Pros' proven Lithium Iron Phosphate (LiFePO4) chemistry, this kit delivers reliable, consistent voltage output throughout the discharge cycle — unlike traditional lead-acid batteries that fade as they discharge.

The M31-36CK kit pairs a BCI Group 31-footprint lithium battery (or batteries) with an included on-board DC charger that automatically replenishes the trolling battery using the outboard engine's charging system while you run. This means you arrive at your fishing spot with more power than you left the dock with.

Key Features:

  • 36-Volt system engineered for 36V trolling motors
  • LiFePO4 chemistry — inherently safe, non-volatile, and long-lasting
  • Group 31 form factor — fits standard marine battery trays
  • Included DC charger — recharges from outboard alternator output while underway
  • Dramatic weight savings vs. equivalent lead-acid battery banks
  • Consistent voltage delivery from full charge to depletion
  • Designed for tournament and professional anglers

Lithium Pros is dedicated to bringing ultra-lightweight, high-performance lithium-ion power to the marine market. The M31-36CK kit represents a straightforward, complete upgrade path for any angler running a 36V trolling motor system.

Fast shipping

Shipping was fast and received tires in a couple of days. Great prices also.

It was a good product my first one blew up so I needed another

I found the product I wanted, and the order was easy to complete. All info was clear and precise, so did not have to speak with anyone! Acknowledgement of the order was prompt and was filled and shipped almost immediately. Packaged well and received within a few days. I certainly will consider the seller should the time arise in the future.

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