20A dual battery solar charge controller / regulator for 12V / 24V batteries

Tired of managing multiple batteries in your caravan, camper van, or boat? Discover the 20A Dual Battery Solar Charge Controller, your ultimate solution for smart and efficient power management. This high-quality regulator is designed to seamlessly charge and protect both your engine and leisure batteries simultaneously, ensuring reliable power and extending battery life wherever your adventures take you. Say goodbye to power worries and enjoy consistent, optimized charging for your 12V or 24V battery systems.

Engineered with advanced PWM (Pulse Width Modulation) technology, this solar charge controller goes beyond basic charging. PWM significantly increases how well your batteries accept a charge and actively works to prolong their lifespan, even recovering some lost capacity over time. It's the perfect match for any system using two battery banks, like the essential engine and leisure batteries in your mobile setup.

One of its standout features is the intelligent dual-battery management. You have the flexibility to set an initial charging priority, for example, sending 80% of the current to your engine battery and 20% to your leisure battery. Once one battery is fully charged, the controller cleverly diverts all available current to the other, ensuring no power goes to waste.

Worried if you only have one battery? No problem! This versatile unit automatically detects if only a single battery is connected and directs 100% of the charging current to it. You can always add a second battery later without needing a new controller.

The controller supports solar panel arrays up to 320W for 12V battery systems and an impressive 640W for 24V battery systems, offering ample capacity for various setups.

Your battery safety is paramount. This robust controller comes packed with multiple protection functions to safeguard your system:

• Stops reverse current flow from the battery back to the solar panel at night.
• Prevents overcharging, which can damage batteries.
• Protects against short circuits.
• Guards against reverse polarity connections.
• And more!

Additional features designed for convenience and optimal performance include:

• Clear LED indicators to show the state of charge at a glance.
• Compatibility with various battery types: sealed, gel, and flooded.
• An integrated temperature sensor that intelligently adjusts the charging process based on the surrounding temperature, ensuring efficient and safe charging.
• An RJ-45 socket for connecting an optional remote LCD meter (available separately with a 10m cable) for detailed monitoring from a distance.

For specific setups where your controller and batteries are located far apart or exposed to different temperatures, we highly recommend an external remote temperature sensor (3m cable, sold separately). This ensures even more precise charging optimization. Connection is simple: just unscrew the green connector block from the sensor cable for easy attachment to the controller's terminals.

Here are the detailed specifications for your reference:

• Rated Charging Current: 20A
• Operation: Fully Automated & Auto 12V/24V Selection
• Terminals: 3 pairs (Input, Battery 1, Battery 2)
• Charge Indicators: LEDs
• Temperature Compensation: -30mV/C/12V (via built-in sensor)
• Remote Meter Connection: RJ-45 (meter not included)
• Protection Features: Overcharge, Short Circuit, Reverse Polarity, etc.
• Self-Consumption: 4mA (night), 10mA (charging)
• Working Temperature: -35°C to +55°C
• Wire Compatibility: Terminals for wire up to 4.0mm²
• Dimensions: 15.5 x 7.6 x 4.0 cm
• Weight: 230 g
• Installation: Multiple mounting holes for easy setup
• Warranty: Covered by a 1-year warranty

Installation is made straightforward with a detailed instruction manual included in the package. Should you require any assistance with installation or have technical questions, we provide FREE support via email or phone.

Invest in the 20A Dual Battery Solar Charge Controller for a truly intelligent and reliable power solution. Enjoy the peace of mind that comes with optimized battery charging, extended battery lifespan, and robust protection against common electrical issues. Whether for your caravan, boat, or any off-grid system, this controller ensures your 12V or 24V batteries are always ready for your next adventure. Get dependable power, simplified!