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Victron BlueSolar PWM DUO-LCD&USB 12/24V-20A — is a specialized PWM charge controller designed for the independent and simultaneous charging of two onboard batteries (e.g., service and starter batteries). The model is equipped with an informative LCD display and a dual USB output, making it an ideal choice for use on boats, in campers, and motorhomes.
Key Advantages
- Charging two independent batteries: separate energy distribution between two distinct batteries
- Charge priority setting: the ability to set the current proportion (e.g., 90% for the main house battery and 10% for the starter battery)
- Automatic system voltage detection: 12V or 24V
- LCD display for detailed monitoring of the status of both batteries and solar panels
- Two USB outputs of 5V (total current 2A) for convenient gadget charging
Technological Features
- Maximum charge current: 20A (total)
- Maximum solar panel voltage: 28V (for 12V systems) / 55V (for 24V systems)
- Supported battery types: AGM, GEL, Flooded (liquid)
- Self-consumption: less than 10 mA
- Built-in protection: against overload, short circuit, and reverse polarity of solar panels or batteries
- Grounding type: common positive pole
- Operating temperature: –35...+60°C
- Humidity: up to 95% (non-condensing)
Dual-Channel Charge Management (DUO)
The main feature of this controller lies in its intelligent current distribution algorithm. It optimizes the charging process so that the starter battery always remains ready to start the engine.
- Software priority setting: power distribution is easily changed via the menu on the built-in display
- Automatic energy redirection: if one of the batteries is fully charged, all available current is automatically directed to the other
Use Cases
- Campers, caravans, and motorhomes (simultaneous charging of the house and car batteries)
- Yachts, speedboats, and motorboats (separate power supply for onboard equipment and engine starter)
- Off-grid solar systems with two isolated battery banks
Communication and Monitoring Interfaces
- LCD screen: displays current voltage, charge current for each battery, and solar generation status
- USB outputs: 2 × 5V (total current 2A) — charging smartphones, tablets, etc.
- No Bluetooth or VE.Direct — a reliable, standalone, and fully self-sufficient solution
Why Buy from Total-Energo LLC
- We are an official supplier of Victron Energy in Ukraine
- We guarantee the original origin of the products and their functionality
- We offer calculations and selection of solutions for specific tasks: lighting, backup power, mobility
- Consultations on connection, installation, and warranty service