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Mastervolt 83304002 Charge Mate Pro 40 Electronic Battery Charge Relay 40A

Manufacturer

MasterVolt

<h3>MasterVolt: Autonomous Power Solutions for Demanding Applications</h3><p>MasterVolt has earned its reputation as a global leader in autonomous electrical power systems by combining cutting-edge technology with uncompromising reliability. As specialists in the management, conversion, and storage of electrical energy, MasterVolt offers a comprehensive product portfolio with a power range from 300 W to 40 kWatt, making them a trusted choice for marine, RV, industrial, and off-grid applications where dependable power is non-negotiable.</p><p>Part of the Navico Group, MasterVolt benefits from decades of engineering excellence and a deep understanding of harsh operating environments. The brand's philosophy centers on providing integrated electrical systems that work seamlessly together, from power generation and storage to conversion and intelligent monitoring. With offices and partners in more than 80 countries, MasterVolt delivers global support backed by local expertise, ensuring customers have access to technical assistance wherever their adventures or operations take them.</p><h3>Engineered for Performance in Extreme Conditions</h3><p>What distinguishes MasterVolt from competitors is their systems-focused approach to electrical power. Rather than selling isolated components, MasterVolt designs products that communicate through their proprietary MasterBus platform, enabling comprehensive system monitoring and control. This integration is particularly valuable in complex installations where multiple power sources, battery banks, and loads must work in harmony.</p><p>The brand's product lineup addresses every aspect of autonomous power management. Their advanced <a href="/11274-mastervolt-battery-chargers-200141">battery chargers</a> utilize sophisticated multi-stage charging algorithms optimized for various battery chemistries, from traditional AGM to cutting-edge lithium-ion technologies. These chargers are engineered to maximize battery life while minimizing charging time—a critical consideration for users who depend on limited generator runtime or solar input.</p><p>Equally important to any robust electrical system are <a href="/11274-mastervolt-battery-isolators-voltage-sensitive-relays-200144">battery isolators and voltage sensitive relays</a>, which intelligently manage current flow between multiple battery banks. MasterVolt's approach to battery isolation ensures that essential loads always have priority access to power while auxiliary batteries charge efficiently when surplus capacity is available. This intelligent power distribution prevents the all-too-common scenario of a depleted starting battery.</p><h3>Trusted in the World's Most Demanding Environments</h3><p>MasterVolt specializes in managing, monitoring, converting and storing power for marine, mobile and industrial applications, environments where equipment faces constant vibration, temperature extremes, moisture exposure, and the consequences of power system failure can be severe. Their products are built to withstand these challenges while maintaining precise voltage regulation and clean power output that protects sensitive electronics.</p><p>Whether powering a blue-water cruising yacht, equipping an overland expedition vehicle, or providing backup power for critical infrastructure, MasterVolt delivers the reliability and performance that professionals demand. Their commitment to innovation ensures that every product represents the latest advances in power electronics, energy efficiency, and user-friendly operation.</p>

Part Number

83304002
06/01/2036 9:11 AM
Sale Price

$290.31

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Product Details

The Mastervolt Charge Mate Pro 40 is an intelligent electronic charge relay designed for dual battery systems on boats, RVs, and other mobile applications. This advanced device automatically connects both batteries during charging while keeping them isolated during discharge, ensuring optimal power management and system reliability.

Unlike simple mechanical battery isolators, the Charge Mate Pro 40 features electronic switching with minimal voltage drop, maximizing charging efficiency. It intelligently limits charge current to the secondary battery to 40 Amps, prioritizing the main battery to ensure critical systems remain powered. The unidirectional design blocks return current under all circumstances, preventing power dips in the onboard electrical network.

Key Features:

  • Electronic charge coupling with extremely low voltage drop for maximum efficiency
  • 40 Amp charge current limit to secondary battery ensures priority charging of main battery
  • Unidirectional operation blocks return current, eliminating voltage dips in the primary system
  • Compatible with all battery charger types and alternators
  • LED status indicator for easy monitoring
  • IP67-rated waterproof electronics in corrosion-resistant housing
  • Integrated aluminum heat sink for reliable thermal management
  • Optional bypass switch connection enables emergency-start function

The rugged IP67-rated construction with aluminum heat sink makes the Charge Mate Pro 40 ideal for harsh marine and mobile environments. Installation is straightforward, and the LED indicator provides at-a-glance status confirmation of charging operation.

Products specifications

Amperage

40 Amps

Type

Battery Isolator/Combiner

Voltage

12/24 Volt Systems

Multi Bank Chargers

1 Bank

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