1. Product Overview
The POWLSOJX MPPT Solar Charge Controller utilizes advanced Maximum Power Point Tracking (MPPT) technology to efficiently manage power from solar panels to charge batteries. It is designed for various solar power systems, including communication base stations, home power supply systems, traffic lights, solar street lamps, and courtyard lamp systems. The controller automatically identifies 12V, 24V, 36V, and 48V battery systems and is compatible with multiple battery types.
Key Features:
- Advanced MPPT technology with tracking efficiency no less than 99.5%.
- Dynamic LCD display for operation data and working status.
- Compatible with Seal, GEL, Flooded, and LiFePO4 battery charging.
- Dual USB 5V charging ports.
- Automatic identification of 12V/24V/36V/48V systems.
- Multiple protection functions: Over-voltage, Over-current, Over-temperature, Short Circuit, Open Circuit, Over-Discharge, Lightning, and Reverse Protection.
- 7 selectable working modes.
- User-modifiable and savable parameters.
- Backlight display.

Key features of the MPPT Solar Charge Controller
2. Setup and Installation
Wiring Instructions:
To ensure correct battery voltage identification, follow the wiring sequence carefully. The controller wiring must be connected to the battery first, then the PV panel, and finally the DC load.
- Step 1: Connect the Battery. Ensure the battery voltage is within the required range for the system (e.g., for a 12V battery, voltage should be higher than 10V; for 24V, higher than 20V; for 36V, higher than 30V; for 48V, higher than 42V).
- Step 2: Connect the Solar Panels (PV Array).
- Step 3: Connect the DC Load.

Correct connection order for the solar charge controller

Detailed wiring diagram and voltage requirements
Precautions:
- This controller automatically adapts to 12V/24V/36V/48V systems. When installing for the first time, ensure the battery has sufficient voltage so that the controller can correctly identify the battery type.
- Install the controller as close to the battery as possible to avoid voltage drops caused by long wires, which can affect normal voltage judgment.
- This controller is suitable for lithium batteries with various lead-acid batteries (including open, sealed, colloidal, etc.). Lithium batteries may require manual adjustment of overcharging voltage. Do not use other batteries (nickel metal hydride batteries, etc.).
- This controller can only use the photovoltaic board as the charging source; do not use DC or other power supply as the charging source.
- This controller will generate heat when running. Please pay attention to install the controller on a flat, well-ventilated surface.
3. Operating Modes
The controller offers 7 distinct working modes to suit various application needs:
- Charging Mode: In this mode, the controller focuses solely on charging the battery and will not discharge.
- Light Control Mode: When the controller detects nighttime, it will delay for ten minutes, then begin discharging. When it detects daytime, it will delay for ten minutes, then stop discharging.
- Light and Time Delay Control Mode: Similar to Light Control Mode, but discharge will stop after a set countdown timer reaches zero. The longest duration for this delay is 23 hours and 59 minutes.
- Universal Control Mode: Under normal, trouble-free conditions, the controller will continuously discharge.
- Manual Control Mode: Discharge can be manually toggled using the '▼' button.
- Timing Control Mode: The discharge function opens or closes at regularly scheduled times.
- Test Mode: This mode is identical to the Light and Time Delay Control Mode but with a reduced ten-minute time delay.
LCD Display and Parameter Settings:
The LCD dynamically displays various operational data and working statuses. Users can modify and save some controller parameters.

LCD display areas and their functions
- Battery Work Status Display Area: Shows current battery status.
- Solar Panel Operating Status Area: Displays the status of the solar panel input.
- Load Output Status and Parameter Display Area: Shows load output and other parameters.
- Mode Control Display Area: Indicates the currently selected working mode.
- Normal and Fault Status Display Area: Provides information on normal operation or any detected faults.
The controller also features dual USB 5V charging ports for convenient device charging.
4. Maintenance
Heat Dissipation:
The controller features a die-cast aluminum heat sink designed for high heat dissipation efficiency, ensuring optimal performance and longevity. The aluminum alloy construction provides a sturdy, waterproof, and anti-corrosion structure with good ventilation.

Efficient heat dissipation design with temperature sensor placement
A temperature sensor (3.3ft length) is included. Place this sensor near the battery to allow the controller to compensate battery charge voltages, which helps extend battery lifespan.
5. Troubleshooting
Refer to the table below for common malfunctions and their troubleshooting methods:
| Malfunction Phenomenon | May Cause | Troubleshooting Method |
|---|---|---|
| Sunshine is sufficient but not charging | Photovoltaic board open circuit or reverse connection | Re-link good photovoltaic panels |
| The load logo does not light up | Mode setting error | Re-set |
| Load mark flashes slowly | Load overcurrent | Reduce load power |
| Load logo flashes quickly | Short circuit protection | Remove short circuit, automatically recover |
| The controller does not light up | The battery voltage is too low/reverse connection | Replace the battery / check reverse connection |

Troubleshooting guide for common issues
6. Specifications
| Specification | Value |
|---|---|
| Brand Name | POWLSOJX |
| Maximum Current | 60A / 80A / 100A (model dependent) |
| Battery Voltage | 12V/24V/36V/48V Auto |
| Max PV Input Power (12V Battery) | 720W |
| Max PV Input Power (24V Battery) | 1440W |
| Max PV Input Power (36V Battery) | 2160W |
| Max PV Input Power (48V Battery) | 2880W |
| Max Solar Input (Voc) (12V Battery) | 15-25V |
| Max Solar Input (Voc) (24V Battery) | 30-50V |
| Max Solar Input (Voc) (36V Battery) | 45-75V |
| Max Solar Input (Voc) (48V Battery) | 60-100V |
| Application | Thermal Controller, Solar System Controller, Solar Working Station |
| Is Smart Device | No |
| Certification | CE, FCC |
| Product Dimensions (L x W x H) | 22 cm x 21 cm x 8 cm |
| Product Weight | 0.812 kg |
7. User Tips
- Verify MPPT Functionality: While the product is advertised as MPPT, some users have questioned its internal design. Ensure you understand the difference between MPPT and PWM controllers for your specific application needs. The manufacturer states it uses advanced MPPT technology.
- Battery Compatibility: The controller supports Seal, GEL, Flooded, and LiFePO4 batteries. For LiFePO4 batteries, manual adjustment of overcharging voltage may be required. Consult the settings menu for battery type configuration.
- Timer Function: The built-in timer function is highly appreciated by users for managing load discharge, especially useful for applications like pool pumps or lighting systems.
- Voltage Flexibility: The controller works effectively across 12V, 24V, and 36V systems, offering versatility for different setups.
- Ventilation: Always ensure the controller is installed in a well-ventilated area to prevent overheating, as it generates heat during operation.
8. Warranty and Support
This POWLSOJX MPPT Solar Charge Controller comes with a 12-month warranty from the date of purchase. For technical support, warranty claims, or any operational questions not covered in this manual, please contact the manufacturer or your point of purchase.

12-month warranty information
9. Product Demonstration Video
Watch this video for a visual demonstration of the POWLSOJX MPPT Solar Charge Controller, including its appearance and basic operation.
Product demonstration and setup overview
10. Statement of Compliance
Disclaimer:
⚠️ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.






