GCSOAR TD2107
GCSOAR 15A MPPT Solar Charge Controller User Manual
Model: TD2107
1. Introduction
Thank you for choosing the GCSOAR 15A MPPT Solar Charge Controller, Model TD2107. This advanced Maximum Power Point Tracking (MPPT) charge controller is designed to efficiently manage power from your solar panels to charge various battery types in 12V or 24V systems. Featuring a built-in WiFi adapter and an intuitive LCD display, it allows for convenient monitoring and control. This manual provides essential information for safe installation, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your solar power system.
2. Safety Information
Please read all instructions carefully before installation and operation. Failure to follow these instructions may result in serious injury, damage to the controller, or damage to other components.
- Ensure all wiring is correctly polarized and securely connected. Incorrect wiring can cause damage.
- Always connect the battery to the charge controller first, then the solar panel, and finally the load. Disconnect in the reverse order: PV, then Load, then Battery.
- Do not disassemble or attempt to repair the controller. Refer to qualified service personnel.
- Install the controller in a well-ventilated area, away from flammable materials and direct sunlight.
- Use appropriate circuit breakers or fuses for all connections (battery, PV, load) to prevent overcurrent.
- Wear eye protection when working with batteries. Batteries can produce explosive gases.
- Ensure the PV array's open circuit voltage (Voc) does not exceed the controller's maximum PV input voltage (75V).
3. Product Features
- Advanced MPPT Technology: Maximizes power harvest from solar panels, increasing charging efficiency by up to 30% compared to PWM controllers.
- Automatic System Voltage Recognition: Automatically detects 12V or 24V battery systems.
- Wide Battery Compatibility: Supports Gel, Sealed, Flooded, AGM, and Li-Ion batteries.
- Built-in WiFi Module: Enables remote monitoring and parameter setting via a dedicated mobile application.
- LCD Display: Provides real-time system information including PV voltage, battery voltage, charging current, load status, and more.
- Comprehensive Protections: Includes overcharge, over-discharge, overcurrent, short circuit, reverse polarity, and overheating protection.
- 4-Stage Charging: Features Bulk, Boost, Float, and Equalize charging stages for optimal battery health and longevity.
- Dual USB Outputs: Conveniently charge small electronic devices.

4. Package Contents
Please check the package contents upon receipt to ensure all items are present and undamaged:
- 1 x GCSOAR 15A MPPT Solar Charge Controller (TD2107)
- 1 x User Manual (this document)
5. Setup and Installation
Proper installation is crucial for the safe and efficient operation of your solar charge controller. Follow these steps carefully:
5.1 Mounting the Controller
Choose a suitable location for mounting the controller. It should be:
- Indoors, protected from direct sunlight, high temperatures, and moisture.
- In a well-ventilated area to allow for heat dissipation.
- Close to the battery, but in a separate, well-ventilated compartment if possible, to avoid battery gases.

5.2 Wiring Connections
Always follow the connection order: Battery → Load → PV. Disconnect in the reverse order: PV → Load → Battery.
- Connect the Battery: Connect the positive and negative terminals of the battery to the corresponding battery terminals on the charge controller. Ensure correct polarity. The LCD display should light up.
- Connect the DC Load (Optional): If you have a DC load, connect its positive and negative terminals to the load terminals on the controller.
- Connect the Solar Panel (PV Array): Connect the positive and negative terminals of your solar panel(s) to the PV terminals on the charge controller. Ensure correct polarity. The controller will begin charging the battery.


6. Operating Instructions
6.1 LCD Display Overview
The LCD display provides real-time operational data. Use the buttons below the display to navigate through different screens and settings.
6.2 Battery Type Selection
The controller supports various battery types. It is crucial to select the correct battery type for optimal charging and to prevent damage to your battery. You can typically set this via the mobile app or directly on the controller if it has a menu option.
- SEL: Sealed Lead-Acid Battery
- GEL: Gel Battery
- FLD: Flooded Lead-Acid Battery
- AGM: Absorbed Glass Mat Battery
- LI: Lithium-Ion Battery (LiFePO4, Li-NCM, etc.)
- USER: User-defined parameters for custom battery types.

6.3 Charging Modes
The controller employs a 4-stage charging algorithm to optimize battery charging and extend battery life:
- Bulk Charging: Charges the battery at its maximum current until it reaches the boost voltage.
- Boost Charging: Charges at a constant voltage for a set period to ensure the battery is fully charged.
- Float Charging: Maintains the battery at a lower voltage to compensate for self-discharge and keep it fully charged.
- Equalize Charging (for certain battery types): Periodically overcharges the battery to balance cell voltages and prevent sulfation.
7. WiFi Connectivity and App Usage
The built-in WiFi module allows you to monitor and control your solar system remotely via a smartphone application. The app is typically named "iConnect" or "LD iConnect".
7.1 App Download and Installation
- For Android: Scan the QR code provided in the physical manual or search for "iConnect" or "LD iConnect" in the Google Play Store.
- For iOS: Search for "iConnect" or "LD iConnect" in the Apple App Store.
7.2 Connecting to the Controller
The controller broadcasts its own local WiFi signal. Connect your smartphone to this WiFi network. The network name and password should be available on the controller's display or in the physical manual.

7.3 App Features
Once connected, the app allows you to:
- Monitor Real-time Data: View PV voltage, current, power; battery voltage, state of charge (SOC), temperature; load voltage, current, power.
- View Historical Data: Access records of energy generation and consumption.
- Adjust Parameters: Change battery type, set charging voltages, load control modes, and other system parameters.


8. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your solar charge controller:
- Check Connections: Periodically inspect all wiring connections to ensure they are tight and free from corrosion. Loose connections can cause overheating and poor performance.
- Clean the Controller: Keep the controller clean and free of dust and debris. Use a dry cloth to wipe the exterior. Do not use liquid cleaners.
- Inspect for Damage: Check for any visible signs of damage to the casing, wires, or terminals.
- Ventilation: Ensure the installation area remains well-ventilated to prevent overheating. Clear any obstructions around the controller.
- Battery Health: Monitor your battery's health and perform any recommended maintenance specific to your battery type.
9. Troubleshooting
This section addresses common issues you might encounter with your solar charge controller.
| Problem | Possible Cause | Solution |
|---|---|---|
| Controller display is off / No power | Battery not connected or low voltage; reverse polarity. | Check battery connections and voltage. Ensure correct polarity. Charge battery if voltage is too low. |
| Battery not charging | PV panel not connected; insufficient sunlight; PV voltage too low/high; faulty PV panel; incorrect battery type setting. | Check PV connections. Ensure adequate sunlight. Verify PV voltage is within controller's operating range (Max PV 75V). Confirm correct battery type is selected in settings. |
| Load not working | Load not connected; load overcurrent; battery low voltage; load control setting. | Check load connections. Reduce load if it exceeds controller's capacity. Charge battery. Adjust load control settings in the app or on the controller. |
| WiFi connectivity issues | Incorrect WiFi password; out of range; interference; controller WiFi module issue. | Ensure correct WiFi password. Move closer to the controller. Reduce interference from other devices. Try resetting the controller (refer to manual for specific reset procedure). If persistent, contact support. |
| Inaccurate readings on LCD/App | Loose connections; sensor malfunction; software glitch. | Check all wiring connections. Restart the controller. Update app if available. If problem persists, contact support. |
10. Technical Specifications
| Parameter | Value |
|---|---|
| Model | TD2107 |
| System Voltage | 12V/24V Automatic |
| Rated Charge Current | 15A |
| Max. PV Input Voltage | 75V |
| Max. PV Input Power (12V) | 190W |
| Max. PV Input Power (24V) | 380W |
| Display Type | LCD |
| Operating Temperature | -20°C to +50°C (5E+1 Degrees Celsius) |
| Battery Types Supported | Gel, Sealed, Flooded, AGM, Li-Ion |
| Material | Plastic |
| Product Dimensions (L x W x H) | 6.5 x 4.84 x 1.81 inches (165mm x 123mm x 46mm) |
| Item Weight | 1.39 pounds (630 Grams) |
| Color | Green, Black |

11. Warranty and Support
GCSOAR products are manufactured to high-quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official GCSOAR website. If you encounter any issues or require technical assistance, please contact GCSOAR customer support.
You can find more information and support resources by visiting the GCSOAR Store on Amazon.
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