20A 12V/24V MPPT solar charge controller with LCD display for vehicles, boats, lighting and off-grid solar systems
20A 12V/24V MPPT solar charge controller with LCD display for vehicles, boats, lighting and off-grid solar systems
SKU:WMPPT20
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20A 12V/24V MPPT Solar Charge Controller
Advanced MPPT Technology & LCD Display | For Off-Grid, Vehicles & Boats
The Photonic Universe 20A 12V/24V MPPT Solar Charge Controller (SKU: WMPPT20) is an advanced solution for optimising solar power systems in various applications, including vehicles, boats, and off-grid setups. Designed and manufactured in Italy to high European quality standards, this controller efficiently manages power from your solar panels to your battery bank.
Utilising Maximum Power Point Tracking (MPPT) technology, it constantly seeks the peak power output of your solar array, boosting current and delivering a higher energy yield compared to traditional PWM controllers. This ensures your batteries receive the maximum possible charge, even in varying weather conditions.
MPPT Advantage: Maximises solar panel output by up to 30% compared to PWM controllers, ensuring efficient energy harvest.
Key Features
| ▶ Advanced MPPT Technology — Ensures maximum power extraction from solar panels. |
| ▶ 12V/24V Auto Detection — Automatically adapts to your battery system voltage. |
| ▶ Wide Battery Compatibility — Supports sealed, gel, flooded, and lithium battery types. |
| ▶ Programmable Load Output — Features 18 load management programs for 12V appliances. |
| ▶ Backlit LCD Display — Provides real-time system information and operational status. |
| ▶ Integrated Temperature Sensor — Monitors battery temperature for optimised charging and protection. |
| ▶ Comprehensive Safety Features — Full electronic protection against common electrical faults. |
Technical Specifications
| Parameter | Value |
|---|---|
| System Voltage: | 12V / 24V Auto |
| Max. Charge Current: | 20A |
| Max. PV Input Voltage: | 100V |
| Max. PV Input Power (12V): | 310W |
| Max. PV Input Power (24V): | 620W |
| Self-Consumption: | 12.7 mA |
| Working Temperature: | -10°C to +50°C |
| Dimensions (LxWxH): | 154 x 130 x 53 mm |
| Weight: | 515 g |
Charging & Battery Modes
This MPPT charge controller offers versatile charging capabilities for a wide range of battery types. It automatically detects 12V or 24V battery systems and provides advanced configuration options for charging voltages, ensuring optimal performance and longevity for your specific battery chemistry.
| Battery Type | Compatibility Note |
|---|---|
| Sealed Lead-Acid | Optimised charging profiles for maintenance-free sealed batteries. |
| Gel Lead-Acid | Gentle charging algorithms suitable for gel-filled batteries. |
| Flooded Lead-Acid | Robust charging for traditional wet-cell batteries. |
| Lithium (LiFePO4) | Configurable settings to meet specific lithium battery charging requirements. |
The integrated battery temperature sensor provides automatic compensation, further enhancing charging accuracy and battery protection, especially for lead-acid types.
Typical Applications
| Application Area | Description |
|---|---|
| Off-Grid Solar Systems | Ideal for remote cabins, sheds, and small residential off-grid power setups. |
| Motorhomes & Caravans | Efficiently charges leisure batteries for mobile living and travel. |
| Boats & Yachts | Reliable power management for marine electrical systems. |
| Solar Lighting Systems | Manages charging and programmable load for outdoor or remote lighting. |
| Small Business & Commercial | Suitable for powering small commercial equipment or backup systems. |
Built-In Protection Functions
The Photonic Universe 20A MPPT controller incorporates a comprehensive suite of electronic safety features to protect your solar system and batteries. This includes protection against over-charging • deep discharge • overload • reverse current at night (from battery to panel) • solar panel overvoltage • short circuit • and reverse polarity for both the solar panel and battery.
Common Questions
What is MPPT technology?
MPPT (Maximum Power Point Tracking) technology allows the charge controller to continuously adjust its input to match the maximum power point of the solar panel. This optimises the energy harvest, especially in varying light and temperature conditions, leading to significantly higher efficiency than PWM controllers.
What battery types are compatible with this controller?
This controller is compatible with a wide range of 12V and 24V battery types, including sealed, gel, flooded (wet cell), and lithium batteries. It also allows for advanced configuration of charging voltages to suit specific battery requirements.
Can I connect a 12V load directly to the controller?
Yes, the controller features dedicated load terminals for connecting 12V appliances. It offers 18 different programmable load management programs, allowing you to set timers or operate the load based on day/night detection.
How do I choose the right size solar panel for this 20A controller?
For a 12V battery system, the maximum recommended solar panel input power is 310W. For a 24V battery system, it is 620W. Ensure your solar panel's open circuit voltage (Voc) does not exceed 100V.
Installation Notes
- Always connect the battery to the controller first, before connecting the solar panel.
- Ensure correct polarity for all connections to avoid damage.
- Mount the controller in a well-ventilated area, away from direct sunlight and moisture.
- Use appropriate cable gauges for your system's current and distance to minimise voltage drop.
- Refer to the manufacturer's instruction manual for detailed wiring diagrams and safety guidelines.
Before You Buy
- Verify your battery system voltage (12V or 24V) matches the controller's auto-detection capability.
- Confirm your solar panel's open circuit voltage (Voc) is below 100V.
- Ensure your total solar panel power (Wp) does not exceed 310W (for 12V) or 620W (for 24V).
- Check compatibility with your specific battery chemistry (sealed, gel, flooded, lithium).
- Consider your load requirements if planning to use the direct load output terminals.
Always verify product specifications and compatibility with your existing system components before purchase. For detailed warranty information, please refer to the manufacturer's official documentation or contact Solarika customer support.
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