Description
Victron BlueSolar PWM Charge Controller (DUO) | Boat Supply Store
Manage and charge two independent battery banks from a single solar array with this Victron Energy PWM charge controller. It supports 12/24VDC systems and delivers a 20A maximum charge current. The integrated Liquid Crystal Display (LCD) provides clear system status, while two 5-volt USB ports offer convenient device charging, essential for maintaining navigation electronics and communication equipment on longer offshore voyages.
Key Features
- Dual Battery Charging: Power and manage two separate 12V or 24V battery banks from a single solar array.
- Clear Status Monitoring: Utilize the integrated Liquid Crystal Display (LCD) for real-time voltage, current, and battery state information.
- Device Charging Capability: Charge smartphones, tablets, and other USB-powered devices directly from the two 5V USB outputs.
- Programmable Load Control: Configure the load output for specific applications, including manual disconnect and low voltage protection.
- Three-Stage Charging Algorithm: Optimize battery health and longevity with efficient bulk, absorption, and float charging stages.
- Comprehensive Protection: Benefit from reverse polarity protection on both solar panel and battery inputs, plus overload and short circuit protection on the load output.
- External Temperature Sensing: Enhance charging performance by connecting an optional external temperature sensor for precise battery temperature compensation.
- Programmable Lighting Function: Automate your boat's lighting with a built-in programmable dusk-to-dawn control feature.
Specifications
| Product Specifications | |
|---|---|
| System Voltage | 12/24VDC Auto-select |
| Maximum Charge Current | 20A |
| Maximum Solar Array Power (12V) | 260W |
| Maximum Solar Array Power (24V) | 520W |
| Maximum Solar Open Circuit Voltage | 45V |
| Load Output Current | 20A |
| USB Output | 2 x 5V |
| Charging Algorithm | Three-stage (Bulk, Absorption, Float) |
| Operating Temperature | -20°C to 50°C |
| Enclosure | IP22 |
| Dimensions (H x W x D) | 133 x 150 x 54 mm |
| Weight | 0.49 kg |
Who This Is For
Ideal for boat owners requiring the management of two distinct battery banks from solar power, such as separate house and engine batteries. Also suitable for RV enthusiasts and off-grid applications needing reliable dual-battery charging and device connectivity via USB.
How It Compares
| Feature | Victron BlueSolar PWM Charge Controller (DUO) | Competitor |
|---|---|---|
| Victron BlueSolar PWM Charge Controller (DUO) | — | Victron BlueSolar PWM Charge Controller |
| Max Charge Current | 20A | 20A |
| Battery System Voltage | 12/24VDC | 12/24V Auto |
| Dual Battery Charging | Yes | No |
| USB Ports | 2 x 5V | No |
| Display | LCD | LCD |
| Programmable Lighting Control | Yes | Yes |
Common Concerns Answered
Is the higher price of this dual battery controller justified over purchasing two single units?
The Victron BlueSolar PWM DUO consolidates the functionality of two controllers into a single unit, simplifying wiring and installation. Its integrated LCD, dual USB ports, and advanced programming offer a more streamlined and feature-rich solution, which can be more cost-effective and space-saving than managing two separate devices for dual-battery setups.
How does PWM technology compare to MPPT for my boat's solar system?
PWM (Pulse Width Modulation) controllers like this Victron unit are highly effective for smaller solar arrays or systems where panel voltage closely matches battery voltage. For larger arrays or situations where maximizing power harvest under varying conditions is critical, MPPT controllers generally offer higher efficiency. However, for many dual-battery marine applications, the robust performance and value of this PWM DUO are excellent.
Is the documentation sufficient for advanced programming features?
While the manual covers essential operations, advanced users may find additional online resources or direct contact with Victron support beneficial for intricate programming scenarios. The core functionality, including dual battery charging and load control, is clearly detailed, ensuring effective operation for most users.
Frequently Asked Questions
Can this charge controller simultaneously charge two separate batteries?
Yes, the Victron BlueSolar PWM Charge Controller (DUO) is specifically designed to manage and charge two independent 12V or 24V battery banks from a single solar array.
What is the maximum solar panel input voltage this controller can handle?
The controller has a maximum solar open circuit voltage rating of 45VDC, making it compatible with a wide range of standard solar panels.
Does this controller include USB ports for charging devices?
Yes, it features two integrated 5-volt USB outputs, allowing you to directly charge mobile phones, tablets, GPS units, and other USB-powered electronic devices.
What battery charging stages does the Victron BlueSolar PWM Charge Controller (DUO) support?
This controller employs a three-stage charging algorithm, including Bulk, Absorption, and Float stages, to ensure optimal battery health, charge retention, and longevity.
Can the load output be manually disconnected for maintenance or safety?
Yes, the programmable load output includes a manual disconnect function, along with low voltage disconnect (LVD) protection to prevent over-discharge of the battery.
