📝 Enerdrive ePOWER 12V 40A+ DC to DC Battery Charger

Experience professional-grade charging performance with the Enerdrive ePOWER EN3DC40+ 12V 40A DC to DC Battery Charger — the ultimate dual-input charging solution for serious adventurers and off-grid systems. Designed to deliver unmatched efficiency and reliability, this premium charger provides simultaneous charging from alternator and solar sources while offering full control and visibility through its intelligent LCD interface.

⭐ Essential Benefits

• Dual DC Inputs – Charge your auxiliary battery from both the vehicle alternator and solar array with completely independent DC inputs.
• Built-in MPPT Solar Controller – Extracts maximum energy from your solar panels using advanced Maximum Power Point Tracking (MPPT) technology.
• Multi-Stage Charging – Fully automatic 3-stage charge (Bulk, Absorption, Float) tailored for multiple chemistries including AGM, GEL, Flooded, Lithium, and user-defined profiles.
• High Power Flexibility – Accepts 12V or 24V alternator input and up to 45V/800W solar input for maximum versatility across different systems.
• Smart Cooling System – Maintains consistent performance up to 40°C+ with thermo-controlled fan cooling for efficient thermal regulation.
• Comprehensive LCD Interface – Easily program and monitor voltage, amperage, and charging status in real time via the intuitive LCD screen.
• Temperature Compensation – Includes a temperature sensor for precise adjustments based on ambient and battery conditions.
• High Efficiency – Achieves up to 95% efficiency, reducing charge time and maximising system output.

⚙️ Functionality

The ePOWER EN3DC40+ automatically manages dual power inputs — prioritising alternator charge when driving and switching to solar when stationary. The integrated MPPT controller ensures maximum solar harvest under all conditions. Its adaptive charging algorithm intelligently regulates voltage and current to maintain battery health and performance.

Customisable charge profiles make it suitable for both deep-cycle and lithium batteries, ensuring a safe and complete charge cycle every time. The backlit LCD screen gives instant access to all system metrics, including input source, charging mode, and temperature data.

🔌 Compatibility

• Works with AGM, GEL, Flooded, and Lithium (LiFePO₄) batteries
• Supports 12V and 24V alternator input
• Accepts solar input up to 45V / 800W
• Ideal for RVs, 4WDs, caravans, boats, and off-grid solar systems

🧰 Installation Difficulty

🟠 3/5 (Moderate) – Requires understanding of 12V electrical systems for integration between alternator, solar, and auxiliary batteries.

🔍 Features

• Dual DC inputs for alternator and solar
• Built-in MPPT solar regulator (up to 800W / 45V input)
• Fully automatic multistage charging
• LCD display with live voltage, current, and status readings
• Programmable charging profiles
• Thermo-controlled fan cooling
• Integrated battery temperature sensor
• Over-voltage, short-circuit, and thermal protection
• 5-year warranty

📊 Specifications

📦 What’s Included

• 1 × Enerdrive ePOWER EN3DC40+ 12V 40A DC to DC Charger
• 1 × Battery Temperature Sensor
• 1 × Mounting Hardware Kit
• 1 × User Manual