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Marinco 2740A Guest ChargePro 40 Amp 4-Bank On-Board Marine Battery Charger

Manufacturer

Marinco

<h3>About Marinco: Trusted Marine Electrical Innovation Since 1972</h3><p><strong>Marinco</strong> has been a cornerstone of the marine electrical industry for more than five decades. The brand traces its roots to 1972, when founder Bud Toly, frustrated by the poor quality of available marine electrical gear, set out to engineer something better from the ground up. That spirit of problem-solving and uncompromising quality has defined Marinco ever since. Today, the brand is part of the Navico Group — a global leader in marine technology — and continues to serve everyone from weekend bass anglers to commercial vessel operators and major OEM boatbuilders.</p><p><a href="/11273-marinco">Marinco</a> is best known as a world-class manufacturer of shore power systems, but its catalog spans far beyond that single category. The brand's engineers design products for the real-world punishment of salt, spray, and constant moisture — environments where inferior components fail quickly and safe, reliable electrical connections are non-negotiable. Industry involvement is baked into the brand's DNA: <a href="/11273-marinco">Marinco</a> actively participates on ABYC standards committees, helping shape the very regulations its products are built to exceed.</p><h3>Shore Power, Signaling, and Ventilation — Built for the Water</h3><p>At the core of Marinco's reputation is its shore power lineup: heavy-duty cordsets, inlets, outlets, and adapters engineered for both 30-amp and 50-amp applications. The patented EEL (Easily Engaged Lock) jaw-clamp system allows one-handed connection without the frustration of threaded locking rings, and many premium connectors feature built-in LED power indicators so boaters can confirm live power at a glance. Products are engineered to CSA and UL standards, and nickel-plated brass contacts are used throughout to resist the corrosion that plagues lesser marine connectors.</p><p>Beyond shore power, Marinco offers an impressive range of marine accessories that keep vessels safe and comfortable. The brand's <a href="/11273-marinco-air-horns-201608">air horns</a> are a staple on boats of all sizes, delivering the kind of authoritative, regulation-compliant signals that can genuinely protect lives on the water. And for boaters who want to keep cabin air fresh without running down their battery bank, Marinco's <a href="/11273-marinco-solar-cabin-vents-202545">solar cabin vents</a> from its trusted Nicro line provide around-the-clock ventilation powered entirely by the sun — and a built-in rechargeable battery when the sun goes down.</p><h3>Why Boaters Choose Marinco</h3><ul><li><strong>OEM Trust:</strong> Major boatbuilders specify Marinco electrical components from the factory, a testament to the brand's reliability standards.</li><li><strong>Standards Leadership:</strong> Active participation on ABYC committees means Marinco products don't just meet standards — they help write them.</li><li><strong>Marine-Grade Engineering:</strong> Every product is designed for salt air, vibration, and moisture, not just adapted from a land-based design.</li><li><strong>Complete System Thinking:</strong> With over 800 electrical products engineered to work together, Marinco makes it easy to build a cohesive, safe onboard electrical system.</li><li><strong>Decades of Refinement:</strong> Over 50 years of feedback from real boaters has shaped every product iteration, from connector geometry to diaphragm materials.</li></ul><p>Whether you're outfitting a new build, upgrading aging shore power hardware, adding a safety horn, or solving a below-decks ventilation problem, Marinco brings proven engineering and category-defining products to every corner of the job.</p>

Part Number

2740A
06/01/2036 2:51 AM
Sale Price

$484.90

In Stock (7)

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Usually delivered within 2 days

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Product Details

The Marinco Guest 2740A ChargePro is a professional-grade 4-bank on-board marine battery charger designed to keep your vessel's batteries fully charged and maintained. This 40-amp charger provides 10 amps of charging power per bank, making it ideal for boats with multiple battery systems including trolling motors and starting batteries.

Advanced Digital Charging Technology:

  • Fully automatic 5-stage performance charging for optimal battery health
  • High-frequency digital charging technology for efficient power delivery
  • Dedicated charging, sensing, and control circuitry for each independent bank
  • Auto-maintain energy saver mode with 13.4V float voltage to prevent overcharging
  • 14.6V absorption voltage for complete battery charging

Rugged Marine Construction:

  • 100% waterproof to IP67 standards for fresh and saltwater applications
  • Low-profile flangeless extruded aluminum housing with molded gaskets and heavy-duty end caps
  • Shock-resistant plastic composite enclosure built for harsh marine environments
  • Up to 40% lighter than comparable chargers for easier installation

User-Friendly Features:

  • Expanded LED charge status monitor displays the charging progress for each bank
  • Wiring and battery fault detection with visual indicators
  • Pre-wired with 6-foot power cable and heavy-duty strain reliefs for easy installation
  • 120V AC input with NEMA 5-15P plug (operates on 90-135V, 50/60Hz)

Comprehensive Safety Protection:

  • Built-in reverse polarity, over-current, over-voltage, over-temperature, and ignition protection
  • In-line fuses for maximum DC wire protection
  • Minimum battery voltage detection (4.0V per bank) prevents charging damaged batteries

The Guest 2740A is compatible with all 12-volt flooded and AGM lead-acid batteries. Versatile configuration options allow you to charge four separate 12V banks, two 24V trolling motor banks, or one 36V trolling motor system plus an additional 12V starting battery. Dimensions: 8.7" L x 9.0" W x 4.1" H. Backed by a 2-year manufacturer warranty.

So glad to find this part number listed, hope it's correct.

looking for fast shipping

Quick and easy to pay. I used my Amazon account

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Very quick order process

Price of the K&N Air Filter that I ordered was the best that I found on the web! Ordering was a snap and the email updates were always very prompt, will order parts from these guys in the future for sure!

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