1. Introduction
The Anern MPPT Solar Charge Controller is a multi-level Maximum Power Point Tracking (MPPT) photovoltaic battery charge controller designed to optimize power harvesting from your solar panels. Compared to traditional PWM controllers, MPPT technology improves control accuracy and can increase the output power of the solar panel by 5%-30%, ensuring efficient charging of your battery system.
Figure 1: Anern MPPT Solar Charge Controller
2. Features
- Advanced Multi-level Maximum Power Point Tracking (MPPT) technology.
- High tracking efficiency (up to 99%) and peak conversion efficiency (up to 98%).
- Automatic 12V/24V system voltage recognition.
- Supports various battery types: Lithium, Sealed, Flooded, GEL, LiFePO4, Li(NiCoMn)O2.
- Back-light LCD display for clear status monitoring.
- Multiple load operating modes: Regular, Light Control, Light & Time Control, Reverse Light Control.
- Comprehensive protection functions: Solar panel reversed, Battery reversed, Battery over-voltage, Battery over-discharge, Over-load.
- Die-cast aluminum structure for excellent heat dissipation.
Figure 2: MPPT Efficiency Overview
Figure 3: Heat Dissipation Design
3. Safety Information
- Ensure all connections are correct and secure before operation.
- Do not connect the solar panel array to the controller without a battery.
- Always connect the battery first, then the solar panel, and finally the load. Disconnect in reverse order.
- Install the controller in a well-ventilated area, away from flammable materials.
- Avoid direct sunlight and moisture exposure.
- Do not disassemble or attempt to repair the controller yourself. Contact qualified personnel for service.
- Ensure proper grounding for safety.
4. Setup and Installation
4.1 Wiring Diagram
Figure 4: Wiring Diagram
4.2 Connection Steps
- Connect the Battery: Connect the battery to the controller's battery terminals (positive and negative). Ensure correct polarity.
- Connect the Solar Panel: Connect the solar panel array to the controller's PV terminals (positive and negative). Ensure correct polarity.
- Connect the Load: Connect the DC load to the controller's load terminals (positive and negative). Ensure correct polarity.
Important: Always connect the battery first, then the solar panel, and finally the load. Disconnect in the reverse order.
4.3 Battery Type Selection
The controller automatically detects 12V/24V systems. It is compatible with various battery types including Lithium, Sealed, Flooded, GEL, LiFePO4, and Li(NiCoMn)O2. For Lithium batteries, 12V/24V activation is automatic.
Figure 5: Compatible Battery Types
5. Operating Instructions
5.1 LCD Interface Description
The controller features a back-light LCD display that shows real-time system status and allows for parameter adjustments. The display includes icons for PV array, Battery, and Load status, along with voltage and current readings.
Figure 6: LCD Interface and Button Functions
| Item | Icon | Status |
|---|---|---|
| PV array | ☀️ | Day / Night |
| MPPT | Charging | |
| Battery | 🔋 | Uncharged / Battery capacity |
| LiPo / LiFe | Battery type | |
| Load | 💡 | Load on / Load off |
| Button meaning | Button pattern | Button function |
|---|---|---|
| MENU | ▲ | Short press to switch down, press and hold for 3 seconds to enter the next interface. |
| SET | ▼ | Short press to switch up, press and hold for 3 seconds to exit without saving. |
5.2 Load Operating Modes
The controller offers four load working modes for selection. The default setting is for the load to work 24 hours.
Figure 7: Load Operating Modes
- LD1 (Regular Mode): The load works normally and can be turned on or off manually.
- LD2 (Light Control Mode): The load automatically opens at dark and closes at dawn.
- LD3 (Light & Time Control Mode): The load works for a set number of hours after dark and before dawn. It automatically identifies dark and light conditions according to the local environment.
- LD4 (Reverse Light Control Mode): The load automatically opens at dawn and closes at dark.
6. Maintenance
- Regularly check all wiring connections for tightness and corrosion.
- Keep the controller clean and free from dust and debris to ensure proper heat dissipation.
- Inspect the solar panels and battery terminals periodically.
- Ensure the controller is installed in a dry, well-ventilated environment.
- Monitor the LCD display for any error codes or unusual readings.
7. Troubleshooting
This section addresses common issues you might encounter with your solar charge controller.
| Problem | Possible Cause | Solution |
|---|---|---|
| No display on LCD | Battery not connected or low voltage; wiring error. | Check battery connections and voltage. Ensure battery is charged. |
| Battery not charging | Solar panel not connected; insufficient sunlight; solar panel reversed; faulty panel. | Check solar panel connections and polarity. Ensure adequate sunlight. Test solar panel output. |
| Load not working | Load disconnected; battery low; overload protection activated; incorrect load mode. | Check load connections. Ensure battery is sufficiently charged. Reduce load. Verify load operating mode settings. |
| Over-voltage/Over-discharge alarm | Battery voltage exceeds/falls below set limits. | Check battery health and system voltage settings. Ensure correct battery type is selected. |
Figure 8: Built-in Protection Functions
8. Specifications
| Parameter | Value | ||||||
|---|---|---|---|---|---|---|---|
| Rated charge current | 10A | 20A | 30A | 40A | 60A | ||
| Input | |||||||
| Maximum input power | 12V | 130W | 260W | 390W | 520W | 780W | |
| 24V | 260W | 520W | 780W | 1040W | 1560W | ||
| 36V | / | / | / | (1560W) | (2340W) | ||
| 48V | / | / | / | (2080W) | (3120W) | ||
| System rated voltage | 12V/24V Auto. | 12V/24V(36/48V) Auto. | |||||
| Max open voltage of solar panel | <60V (24V) | <75V (24V) | <100V(24V) <150V(48V) | ||||
| Output | |||||||
| Rated Discharge Current | 10A | 20A | 20A | 20A | 30A | ||
| Battery type | User default, Sealed, Flooded, GEL, LiFePO4, Li(NiCoMn)O2. | ||||||
| Equalized charging voltage | Maintenance-free lead-acid battery: 14.6V, GEL: No; Lead-acid Flooded battery: 14.8V | Duration: 2 hours | |||||
| Absorption charging voltage | Maintenance-free lead-acid battery: 14.4V, GEL: 14.2V; Lead-acid Flooded battery: 14.6V | Duration: 2 hours | |||||
| Float charging voltage | Maintenance-free lead-acid battery, GEL, lead-acid Flooded battery: 13.8V | ||||||
| LVR (Low Voltage Reconnect) | Maintenance-free lead-acid battery, GEL, lead-acid Flooded battery: 12.6V | ||||||
| LVD (Low Voltage Disconnect) | Maintenance-free lead-acid battery, GEL, lead-acid Flooded battery: 10.8V | ||||||
| Static loss | 24V(<50mA)/48V(<35mA) | ||||||
| HVD (High Voltage Disconnect) | 12V lead-acid battery | 24V lead-acid battery | 36V lead-acid battery | 48V lead-acid battery | |||
| 16V | 32V | 48V | 64V | ||||
| Light control voltage | 5V/10V/15V/20V | ||||||
| Temperature compensation coefficient | -4mV/°C/2V(25°C) | ||||||
| Discharge loop voltage drop | ≤0.2V | ||||||
| LCD temperature | -20°C ~ +70°C | ||||||
| Operating temperature | -20°C ~ +55°C | ||||||
| Storage temperature | -30 ~ +80°C | ||||||
| Working humidity | ≤90%, No condensation | ||||||
| Protection class | IP30 | ||||||
| Grounded type | Positive grounded | ||||||
| Aperture for installation | Φ 5mm | ||||||
Note: The preceding parameters are for a 12V system at 25°C. For a 24V system, multiply by 2; for a 36V system, multiply by 3; for a 48V system, multiply by 4. Please operate within the controller's allowed ambient temperature range; derate if exceeding.
9. User Tips
- For optimal performance, ensure your solar panel voltage is within the recommended range for your battery system voltage.
- Periodically check the battery terminals for any signs of corrosion and clean them if necessary to maintain good conductivity.
- When setting up, double-check all polarities to prevent damage to the controller or other components.
- Consider the ambient temperature of your installation location, as extreme temperatures can affect the controller's performance and lifespan.
10. Product Overview Video
Video: Anern MPPT Solar Charge Controller Product Overview
11. Warranty and Support
This product comes with a standard manufacturer's warranty. For warranty claims, technical support, or further assistance, please refer to the seller's contact information or the official brand website. Keep your purchase receipt as proof of purchase.
