20A 12V/24V solar charge controller with LCD display for motorhomes, boats, lighting or off-grid solar systems
20A 12V/24V solar charge controller with LCD display for motorhomes, boats, lighting or off-grid solar systems
SKU:WREG20
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20A 12V/24V Solar Charge Controller with LCD Display
Intelligent PWM Charging | For Motorhomes, Boats & Off-Grid Systems
The Photonic Universe 20A 12V/24V Solar Charge Controller (SKU: WREG20) is an essential component for optimising your solar power system. Designed and manufactured in Italy to high European quality standards, this PWM (Pulse Width Modulation) controller intelligently manages the power flow from your solar panels to your batteries, enhancing battery lifespan and overall system performance. It is ideal for a wide range of applications, including motorhomes, boats, and various off-grid solar setups.
Featuring a clear LCD display, this controller provides real-time insights into your system's operation, allowing you to monitor vital parameters such as solar panel and battery voltage, current, and energy usage. Its comprehensive electronic protection functions ensure safe and reliable operation, giving you peace of mind wherever your adventures take you.
IMPORTANT NOTE: This controller features advanced PWM technology and is designed for 12V or 24V lead-acid battery systems.
Key Features
| ▶ PWM Charging Technology — Optimises battery charge acceptance and extends battery lifespan. |
| ▶ Automatic 12V/24V System Detection — Simplifies setup for various battery configurations. |
| ▶ Integrated LCD Display — Provides clear, real-time monitoring of system parameters. |
| ▶ Comprehensive Electronic Protection — Safeguards against overcharge, discharge, and short circuits. |
| ▶ Adjustable Low-Voltage Disconnect — Customise battery protection settings to your needs. |
| ▶ Programmable Load Working Modes — Set timers for connected DC loads like lighting or fans. |
| ▶ Wide Battery Compatibility — Supports sealed, AGM, gel, and flooded lead-acid batteries. |
| ▶ Italian Design & Manufacturing — Ensures high quality and reliability. |
Technical Specifications
| Parameter | Value |
|---|---|
| System Voltage | 12V / 24V Auto |
| Rated Charge & Load Current | 20A |
| Max. Solar Panel Input Voltage | 55V |
| Max. Solar Panel Power (12V System) | 320W |
| Max. Solar Panel Power (24V System) | 640W |
| Compatible Battery Types | Sealed, AGM, Gel, Flooded Lead Acid |
| Terminals Wire Size | Up to 10mm² |
| Self-Consumption | 8mA |
| Working Temperature | -10°C to +60°C |
| Dimensions | 15 x 12 x 5 cm |
| Weight | 500g |
Charging & Battery Modes
The Photonic Universe 20A PWM controller offers versatile charging and load management capabilities to suit various off-grid requirements:
| Feature | Description |
|---|---|
| Battery Type Selection | Pre-set charging programmes for sealed, AGM, gel, and flooded lead-acid batteries ensure optimal charging. |
| Adjustable LVD | Fully adjustable low-voltage battery protection allows customisation to prevent over-discharge. |
| Programmable Load Modes | Configure on/off timers for connected DC loads, ideal for lighting, fans, or pumps. |
| Temperature Compensation | Built-in temperature sensor optimises charging parameters based on ambient conditions. |
Typical Applications
| Application | Description |
|---|---|
| Motorhomes & Caravans | Efficiently charges leisure batteries, powering lights, pumps, and other 12V/24V appliances on the go. |
| Boats & Marine Systems | Manages solar input for reliable power to navigation, lighting, and onboard electronics. |
| Off-Grid Lighting | Ideal for remote cabins, sheds, or garden lighting systems where mains power is unavailable. |
| Small Solar Power Systems | Suitable for various small-scale off-grid installations requiring dependable battery charging. |
Built-In Protection Functions
This Photonic Universe solar charge controller is equipped with a full suite of electronic protection features to ensure the safety and longevity of your battery and solar system. These include protection against current back-flow at night, battery overcharge, battery deep discharge, solar panel overvoltage, load overload, short circuit, and reverse polarity for both the solar panel and battery connections.
Common Questions
What is PWM technology?
PWM (Pulse Width Modulation) technology works by rapidly switching the charging current on and off to regulate the voltage and current delivered to the battery. This method helps to prevent overcharging, desulphate the battery, and significantly extend its lifespan by ensuring a more complete and efficient charge cycle.
What battery types are compatible?
This controller is compatible with common 12V/24V lead-acid battery types, including sealed, AGM, gel, and flooded batteries. It features pre-set charging programmes for these types to ensure optimal performance.
Can I connect an inverter to this controller?
No, an inverter or other powerful appliances should not be connected directly to the load terminals of this solar charge controller. Inverters should always be connected directly to your battery bank, with appropriate fusing. The load terminals are designed for small DC loads like lights or fans.
What is the recommended solar panel voltage?
For optimal efficiency, we recommend using solar panels with an operating voltage of 17V-20V for a 12V battery system, or 34V-40V for a 24V battery system. The controller accepts a maximum solar panel input voltage of 55V.
Installation Notes
- Always connect the battery to the controller first, then the solar panels, and finally the load. Disconnect in reverse order.
- Ensure all connections are secure and correct polarity is observed to prevent damage.
- Mount the controller in a well-ventilated area, away from direct sunlight, heat sources, and moisture.
- Refer to the detailed instruction manual included with the product for specific wiring diagrams and operational guidance.
Before You Buy
- Verify your battery system voltage (12V or 24V) matches the controller's auto-detection capability.
- Confirm your total solar panel power (Watts) does not exceed 320W for 12V or 640W for 24V systems.
- Check your solar panel's open-circuit voltage (Voc) to ensure it is below the controller's maximum input of 55V.
- Ensure your battery type (sealed, AGM, gel, flooded lead acid) is compatible with this PWM controller.
Always consult the manufacturer's manual for precise specifications and installation instructions. Product specifications are subject to change. This Photonic Universe controller is backed by a 5-year manufacturer warranty.
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