1. Product Overview
The EPEVER Tracer4210AN-G3 is an advanced Maximum Power Point Tracking (MPPT) solar charge controller designed for off-grid solar systems. It efficiently manages power flow from solar panels to batteries, ensuring optimal charging and extending battery life. This model supports both 12V and 24V battery systems automatically and is compatible with various battery types, including lead-acid and lithium-ion.
This package includes the Tracer4210AN-G3 controller, an MT52 remote meter for monitoring and parameter setting, and a temperature sensor cable (RTS300R47K3.81A) for accurate temperature compensation.
2. Key Features
- Ultra-fast tracking speed and guaranteed tracking efficiency.
- Advanced MPPT control algorithm to minimize maximum power point loss rate and loss time.
- Compatible with lead-acid (Sealed, Gel, Flooded, User) and lithium-ion (LiFePO4, Li(NiCoMn)O2, User) batteries.
- Common negative grounding design.
- Rated charge current: 40A.
- Max. PV input power: 520W (12V battery) / 1040W (24V battery).
- Max. PV open circuit voltage: 100VDC.
- Automatic 12V/24V system voltage recognition.
- Auto-saving function with two voltage disconnect levels.
- Charging power and current limitation function.
- Independent voltage regulation constant voltage output function.
- Battery temperature compensation function (for lead-acid batteries).
- Overheating power reduction function.
- MT52 Remote Meter for real-time data display, alarm information, and diversified load control modes.
3. Package Contents
The product package typically includes the following items:
- 1 x Tracer4210AN-G3 MPPT Solar Charge Controller
- 1 x Remote Meter MT52
- 1 x Temperature Sensor Cable (RTS300R47K3.81A)
- 1 x RS485 Cable
- 2 x User Manuals (one for controller, one for MT52)
4. Installation Instructions
Always Connect the Battery First!
Please read the complete installation instructions to familiarize yourself with the installation steps before proceeding. Do not use electric screwdrivers for connections.
4.1. Wiring Diagram

The diagram above illustrates the typical system connection. Ensure all components are connected in the correct order to prevent damage.
4.2. Connection Steps
- Connect Battery: Connect the battery to the charge controller first. Ensure correct polarity (+ to + and - to -).
- Connect Load: Connect the DC load to the charge controller.
- Connect Solar Panel (PV Array): Connect the solar panel to the charge controller last.
4.3. Disconnection Steps
To disconnect the system, reverse the connection order:
- Disconnect Solar Panel (PV Array): Disconnect the solar panel first.
- Disconnect Load: Disconnect the DC load.
- Disconnect Battery: Disconnect the battery last.
4.4. Detailed Wiring
Ensure all wires are securely fastened in their respective terminals. The controller features terminals for Solar Panel (10mm²/8AWG), Battery (10mm²/8AWG), and Load (10mm²/8AWG).

4.5. Connecting Remote Meter (MT52)
The MT52 remote meter connects to the COM port on the charge controller using an RS485 cable. This allows for remote monitoring and parameter adjustments.
4.6. Connecting to PC for Monitoring
For advanced monitoring and parameter setting, the controller can be connected to a PC using a CC-USB-RS485-150U cable. This allows access to the EPEVER PC software for detailed system analysis.
5. Operating Instructions
5.1. LCD Display Overview
The controller features an LCD display for real-time monitoring of system status and parameters. Use the 'SELECT' and 'ENTER' buttons to navigate through the menus.

5.2. Setting Battery Type
The controller supports various battery types. To set the battery type:
- Press the "ENTER" button and hold for 5 seconds under the battery voltage interface.
- Press the "SELECT" button when the battery type interface is flashing to cycle through options (Sealed, Gel, Flooded, LiFePO4, Li(NiCoMn)O2, User).
- Press the "ENTER" button to confirm the battery type.
For lithium batteries, specific series configurations are available (e.g., LiFePO4 4s/8s, Li(NiCoMn)O2 3s/6s).
5.3. Setting Load Working Mode
The MT52 remote meter allows for diversified load control modes:
- Manual Control
- Light ON/OFF
- Light ON + Timer
- Time Control
Refer to the MT52 User Manual for detailed instructions on setting these modes.
5.4. Setting Battery Parameters (via MT50/MT52)
For advanced battery parameter settings, use the MT50/MT52 remote meter. Navigate to 'Control Para.' in the menu interface. You can adjust parameters such as Over Voltage Disconnect, Charging Limit, Equalize Charging, Boost Charging, Float Charging, Low Voltage Reconnect, and Discharge Limit. When setting parameters for 'USER' battery type, ensure the voltage parameters follow the specified logic (e.g., Over Voltage Disconnect Voltage > Charging Limit Voltage).
6. Specifications
| Parameter | Value |
|---|---|
| Rated Charge Current | 40A |
| System Voltage | 12V/24V Auto Work |
| Max. PV Input Power (12V) | 520W |
| Max. PV Input Power (24V) | 1040W |
| Max. PV Open Circuit Voltage | 100VDC |
| Battery Voltage Range | 8V~32V |
| Terminal Size | 6AWG (16mm²) |
| Dimensions (L*W*H) | 252 x 180 x 63mm (9.92 x 7.09 x 2.48 inches) |
| Net Weight | 1.65kg (3.64 lbs) |
| Display Type | LCD |
| Material | Lithium (compatible) |
7. Electronic Protections
The Tracer4210AN-G3 controller includes multiple electronic protections to ensure safe operation:
- PV Over Current/Power
- PV Short Circuit
- PV Reverse Polarity
- Night Reverse Charging
- Battery Reverse Polarity
- Battery Over Voltage
- Battery Over Discharge
- Battery Overheating
- Controller Overheating
- Lithium Battery Low Temperature
- Load Short Circuit
- Load Overload
- TVS High Voltage Transients
8. Troubleshooting
If you encounter issues with your EPEVER MPPT Solar Charge Controller, consider the following:
- No Display/Power: Ensure the battery is correctly connected and has sufficient voltage. Check all wiring for loose connections or incorrect polarity.
- No Charging: Verify solar panel connections and ensure adequate sunlight. Check PV input voltage and current on the display. Confirm battery type settings are correct.
- Load Not Working: Check load connections and ensure the load is not overloaded or short-circuited. Verify load control mode settings on the MT52.
- Abnormal Readings: Ensure temperature sensor is correctly connected and not damaged. Check communication cables for secure connections.
For persistent issues, refer to the detailed troubleshooting section in the full user manual or contact EPEVER technical support.
9. Support Information
For technical assistance, product inquiries, or warranty claims, please contact EPEVER's authorized sales agent, Goland Century. They offer free technical support and have service centers in various regions.
Contact Information:
- Technical Support: Available through Goland Century technicians.
- Software Download: EPEVER PC software can be downloaded from the official EPEVER website.
Please refer to the official EPEVER website or your product documentation for the most up-to-date contact details and support resources.





