My Account
Shopping Cart

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Pros was built by a team of engineers, chemists, and racing enthusiasts who shared a single obsession: replacing outdated lead-acid batteries with the most advanced lithium-ion technology available.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

M31-36CK
08/24/2036 4:06 AM
Sale Price

$2,071.10

1 left at this price

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

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.

Fast checkout

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy