45A 12/24V solar charge controller / regulator with LCD display
45A 12/24V solar charge controller / regulator with LCD display
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45A 12/24V PWM Solar Charge Controller
Model: VS4524AU | LCD Display | Dual USB Output
The Photonic Universe 45A 12/24V PWM Solar Charge Controller (Model: VS4524AU) is designed to efficiently manage power flow from your solar panels to your battery bank. This advanced pulse width modulation (PWM) regulator automatically detects 12V or 24V systems and provides comprehensive protection for your batteries, extending their lifespan and ensuring reliable performance.
Featuring a clear LCD display, this controller offers real-time monitoring of solar panel and battery performance, including voltage, current, and state of charge. It also includes a convenient dual USB output, delivering a combined 2.4A for rapid charging of compatible mobile devices.
SYSTEM COMPATIBILITY: Suitable for 12V or 24V sealed, gel, and flooded lead-acid battery systems. Supports solar input up to 640W (12V) / 1280W (24V) with a maximum input voltage of 50V.
Key Features
| ▶ 45A PWM Charging — Efficiently regulates solar power to your battery bank. |
| ▶ Auto 12V/24V Detection — Automatically adapts to your system voltage for ease of use. |
| ▶ LCD Display — Provides clear, real-time monitoring of system parameters. |
| ▶ Dual USB Output (2.4A) — Conveniently charge mobile phones and tablets directly. |
| ▶ Load Programming — Offers various settings for 12V DC loads, including night-time lighting. |
| ▶ Energy Statistics — Tracks daily and monthly charge values for performance analysis. |
| ▶ Battery Temperature Compensation — Optimises charging based on battery temperature (remote sensor optional). |
Technical Specifications
| Parameter | Value |
|---|---|
| Rated Charge/Discharge Current | 45A |
| System Voltage | 12V / 24V Auto |
| Max. Solar Panel Input Power (12V) | 640W |
| Max. Solar Panel Input Power (24V) | 1280W |
| Max. Solar Panel Input Voltage | 50V |
| USB Output | Dual 5V, 2.4A Total |
| Self-Consumption | Max. 9.2mA (12V); 11.7mA (24V) |
| Working Temperature | -25°C to +55°C |
| Dimensions | 19.4 x 11.8 x 6.4 cm |
| Weight | 760 g |
Charging & Battery Modes
This Photonic Universe charge controller supports various battery types, including Sealed, Gel, and Flooded lead-acid batteries. It features multiple charging programs that can be easily selected by the user to optimise charging for the specific battery chemistry, helping to prolong battery life and maintain performance.
The integrated temperature sensor, along with the option to connect a remote temperature sensor (sold separately), ensures accurate temperature compensation for charging, further enhancing battery health and efficiency.
Typical Applications
| Application | Description |
|---|---|
| Off-Grid Solar Systems | Ideal for cabins, sheds, caravans, motorhomes, and remote power setups. |
| Small Home Solar | Manages solar charging for modest residential battery banks. |
| Solar Lighting Systems | Suitable for solar street lights, garden lamps, and other 12V DC lighting. |
| Backup Power Solutions | Maintains charge in battery banks for essential loads during outages. |
Built-In Protection Functions
The Photonic Universe 45A PWM charge controller incorporates multiple electronic safety functions to protect your solar system and batteries. These include protection against reverse current at night (from battery to solar panel) • automatic cut-off for over-charging • deep discharge prevention • overheating protection • overload protection • short circuit protection • and reverse polarity protection for both solar panels and batteries.
Common Questions
What type of batteries is this controller compatible with?
This controller is designed for use with 12V or 24V Sealed, Gel, and Flooded lead-acid batteries. It automatically detects the system voltage.
Can I connect a 12V load directly to the controller?
Yes, an optional 12V DC load (e.g., lighting or fans) can be connected directly to the controller's dedicated load terminals. It offers various settings for load control, including night-time lighting applications.
What is the maximum solar panel input I can use?
For a 12V battery system, the maximum recommended solar panel input power is 640W. For a 24V system, it is 1280W. The maximum solar panel input voltage should not exceed 50V.
Does it have USB charging ports?
Yes, the controller features a dual USB charging output with a total combined output of 2.4A, suitable for fast charging of USB-compatible devices.
Installation Notes
- Mount the controller indoors in a dry, well-ventilated area, away from direct sunlight and heat sources.
- Ensure adequate clearance around the controller for proper heat dissipation.
- Connect the battery first, then the solar panels, and finally any DC loads. Disconnect in reverse order.
- Use appropriate cable gauges for your system's current and distance to minimise voltage drop.
- Refer to the detailed user manual for specific wiring diagrams and safety instructions.
Before You Buy
- Verify your battery bank voltage (12V or 24V) matches the controller's auto-detection capability.
- Confirm your total solar panel array power (in Watts) does not exceed 640W (12V) or 1280W (24V).
- Check that your solar panel array's open-circuit voltage (Voc) does not exceed 50V.
- Ensure the controller's 45A rated current is sufficient for your solar array and battery charging needs.
- Consider if you require a remote temperature sensor for optimal battery charging (sold separately).
Always verify product specifications and compatibility with your existing solar system components before purchase. This product is covered by a 1-year manufacturer warranty.
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