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Description
Victron 12/24V 20A BlueSolar PWM-LCD&USB (DUO Dual Battery) Solar Charge ControllerVictron BlueSolar PWM DUO LCD&USB 12 24V 20A: Dual Battery Solar Charge Controller with Intelligent Load Management Professional Grade Solar Regulation for Independent Dual Battery Charging The Victron BlueSolar PWM DUO LCD&USB 12 24V 20A is a sophisticated PWM solar charge controller engineered to charge two separate battery banks from a single solar array. Unlike standard single bank controllers, the DUO model features a programmable charge current
Victron BlueSolar PWM-DUO LCD&USB 12/24V 20A: Dual Battery Solar Charge Controller with Intelligent Load Management
Professional-Grade Solar Regulation for Independent Dual Battery Charging
The Victron BlueSolar PWM-DUO LCD&USB 12/24V 20A is a sophisticated PWM solar charge controller engineered to charge two separate battery banks from a single solar array. Unlike standard single-bank controllers, the DUO model features a programmable charge current ratio, allowing precise distribution of available solar energy between a primary service battery and a secondary starter or auxiliary battery. This makes it an ideal solution for 4WD dual battery systems, marine installations, caravans, and off-grid setups where maintaining both a deep-cycle house battery and a cranking battery is critical.
With automatic 12/24V system voltage detection, a backlit LCD display for real-time monitoring, and dual integrated 5V 2A USB ports for direct device charging, this controller combines essential power management functions in a compact, IP20-rated chassis. The included remote battery temperature sensor enables voltage compensation based on actual battery temperature, promoting longer battery life and safer charging in fluctuating environmental conditions.
Key Features
- Dual battery charging with programmable current ratio for independent management of two battery banks
- Three-stage charging (bulk, absorption, float) with fully adjustable voltage setpoints for lead-acid and lithium (LiFePO4) batteries
- Integrated LCD display for clear visibility of system status, battery voltage, and charge current
- Dual 5V 2A USB outputs for convenient charging of phones, tablets, and other USB-powered devices
- Programmable load output with low-voltage disconnect and manual control, protected against overload and short circuit
- Comprehensive electronic protections: reverse polarity (battery and solar), over-temperature, and lightning surge protection
- Included remote temperature sensor for accurate temperature-compensated charging
- Lighting control function with fully programmable timer for dusk-to-dawn or timed lighting applications
Advanced Dual Battery Management
In many mobile and off-grid power systems, a single solar array must service both a deep-cycle battery for appliances and a starter battery for engine cranking. The BlueSolar PWM-DUO addresses this by allowing the user to set a custom charge current split (e.g., 80% to house battery, 20% to starter battery). This prevents overcharging of the starter battery while ensuring the service battery receives the bulk of available solar energy. The controller automatically detects 12V or 24V nominal system voltage, simplifying installation and reducing the risk of misconfiguration.
Intelligent Charging and Load Control
The controller employs a three-stage charging algorithm (bulk, absorption, float) that can be fully programmed via the onboard LCD interface and push buttons. This allows precise tailoring of charge voltages to suit flooded lead-acid, AGM, gel, or LiFePO4 battery types. The load output terminal can be configured for low-voltage disconnect to protect batteries from deep discharge, or used as a programmable lighting controller with dusk-to-dawn functionality. The dual USB ports provide a regulated 5V output independent of the load terminals, enabling direct charging of mobile devices without additional adapters.
Robust Protection and Reliability
Victron's BlueSolar PWM series is built for demanding environments. The DUO model includes electronic protection against reverse polarity connection of both the solar array and battery, preventing damage during installation. Over-temperature protection ensures safe operation up to 55°C ambient at full load, while the common negative grounding simplifies integration with existing vehicle or marine electrical systems. The IP20 enclosure is designed for indoor or protected mounting, with 16 mm² (AWG6) terminals that accept substantial cable sizes for low-loss connections.
Applications
- 4WD and camping dual battery systems: Maintain starting battery charge while powering fridge, lights, and accessories from the auxiliary battery
- Marine and boating: Keep both house and engine batteries topped up from solar, with corrosion-resistant construction suitable for protected marine environments
- Caravans and RVs: Charge the house battery bank and vehicle starter battery simultaneously during storage or off-grid camping
- Remote off-grid cabins: Manage two separate battery banks for redundancy or different voltage requirements
- Lighting control: Use the programmable load output for automatic solar-powered lighting in sheds, signage, or security applications
Why Choose Victron BlueSolar PWM-DUO?
Compared to generic PWM controllers, the Victron BlueSolar PWM-DUO offers superior build quality, advanced programmability, and the reliability expected from a leading power electronics manufacturer. The inclusion of a remote temperature sensor, dual USB ports, and a clear LCD interface reduces the need for additional components and monitoring equipment. Its ability to charge two batteries independently from a single solar array eliminates the complexity and cost of installing separate charge controllers or battery isolators, making it a cost-effective solution for dual battery solar charging.
With a maximum solar input voltage of 28V for 12V systems and 55V for 24V systems, this controller is compatible with standard 36-cell and 72-cell solar panels respectively. The 20A rated charge current supports solar arrays up to approximately 280W at 12V or 560W at 24V, providing ample capacity for most small to medium off-grid power systems.
Take Control of Your Dual Battery Solar System
Equip your 4WD, boat, or off-grid setup with the Victron BlueSolar PWM-DUO LCD&USB 12/24V 20A and experience reliable, programmable dual battery charging from a trusted brand. Order today to simplify your solar power management and keep both your batteries ready for action.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy