1. Introduction
The MakeSkyBlue V124 60A MPPT Solar Charge Controller is an advanced device designed to efficiently manage power flow from your solar panels to your battery bank. Utilizing Maximum Power Point Tracking (MPPT) technology, it optimizes solar energy harvesting and ensures a stable, multi-stage charging process for various battery types. This manual provides essential information for the safe and effective installation, operation, and maintenance of your solar charge controller.
2. Package Contents
Before installation, please verify that all items are included in your package:
- One MPPT solar controller
- One CloudBox
- A set of brackets and screws for mounting
- One user manual
3. Setup and Installation
3.1 Physical Installation
The controller features a compact and durable design, suitable for wall-mount installation. Choose a dry, well-ventilated indoor location away from direct sunlight and heat sources. Ensure adequate clearance around the unit for proper airflow and cooling.
3.2 System Wiring Diagram
Proper wiring is crucial for the safe and efficient operation of your solar system. Follow the diagram below for connecting solar panels, the charge controller, batteries, and an inverter to power your appliances.

3.3 Battery Connection
The controller supports automatic recognition of 12V, 24V, and 48V battery systems. It is compatible with various battery types, including Lithium, Sealed Lead Acid, and Vented Gel batteries. Ensure correct polarity when connecting batteries to the controller.


For specific battery voltage settings (e.g., Absorption Charging Voltage, Floating Charging Voltage), please refer to the detailed instructions in the included manual. For user-defined battery types, you can set the voltage within the following ranges:
- For a 12V battery: 12V-17V
- For a 24V battery: 24V-34V
- For a 48V battery: 48V-68V
3.4 PV Input Voltage Considerations
It is critical to ensure that the open-circuit voltage (Voc) of your solar panel array falls within the specified range for your battery system. The controller's maximum PV module open circuit voltage is 150V for 12V/24V systems and 160V for 48V systems. Exceeding these limits can damage the controller.
WARNING: Never exceed the maximum PV Voc. If Voc > 180V, the controller will be burnt.
4. Operating Instructions
4.1 Charging Process
The controller employs a 3-stage smart charging process to optimize battery health and lifespan:
- Constant Current (MPPT): The controller tracks the maximum power point of the solar array to deliver the highest possible current to the batteries.
- Constant Voltage (Absorption Voltage): Once the battery reaches a certain voltage, the controller maintains a constant voltage while the current gradually decreases.
- Floating Charge: After the battery is fully charged, the controller reduces the voltage to a lower level to maintain the battery at full capacity and compensate for self-discharge.
4.2 LCD Display and Control
The multi-function LCD display provides real-time information about your system's status, including PV voltage, battery voltage, charging current, and error codes. Use the control buttons (PRG/ESC, Up, Down, ENTER) to navigate menus and adjust settings.

4.3 Smart App Control
The controller supports smart app control for real-time monitoring and adjustment of system parameters. This allows for convenient remote management of your solar charging system.

4.4 Parallel Operation
For larger solar systems, multiple V124 60A controllers can be connected in parallel without requiring any additional devices. This allows for scalable power management to meet increased energy demands.
5. Maintenance
5.1 Temperature Management
The controller is equipped with a forced air cooling system to maintain optimal operating temperatures. The fan activates when the internal temperature exceeds 45 °C (113℉) and turns off when it drops below 40 °C (104℉). The device has a temperature protection threshold of 75 °C (167℉).

5.2 General Care
- Keep the controller clean and free from dust and debris.
- Ensure ventilation openings are not obstructed.
- Periodically check all wiring connections for tightness and corrosion.
- Avoid exposing the controller to moisture or corrosive environments.
6. Troubleshooting
6.1 Error Codes
The LCD display will show error codes if an issue is detected. Refer to the list below for common error codes and their meanings:
- 10: PV input under-voltage
- 11: PV input over-voltage
- 12: PV input over-current
- 13: Battery over-voltage
- 14: Battery under-voltage
- 21: PV input short-circuit
- 22: Battery short-circuit
- 71: Over-charging current
- 72: Over-discharging current
- 73: Output short-circuit
If an error code appears, identify the corresponding issue and take corrective action. If the problem persists, contact customer support.
6.2 Protection Features
The controller includes several built-in protection mechanisms:
- PV Reverse Polarity Protection: Protects against incorrect PV wiring (effective when Voc < 100V only).
- PV Over-voltage Protection: Shuts down if PV input voltage exceeds safe limits (note: exceeding 180V can cause permanent damage).
- Battery Overcharge Current Protection: Prevents excessive current from damaging batteries during charging.
- Battery Overcharge Voltage Protection: Stops charging when battery voltage reaches a dangerous level.
- Battery Low Voltage Protection: Disconnects the load to prevent deep discharge of batteries.
7. Specifications
| Feature | Specification |
|---|---|
| Model No. | 60A-V124 |
| Charging Technology | MPPT / Maximum power point tracking |
| Charging Mode | 3-stage: Constant current (MPPT), Constant voltage (Absorption voltage), Floating charge |
| System Type | DC12V/24V/48V Recognition automatically |
| Automatic Select Voltage Range | 12V system (DC9V-DC15V), 24V system (DC20V-DC30V), 48V system (DC40V~DC60V) |
| Soft Start Time | ≤1S |
| Dynamic Response and Recovery Time | 100us |
| Max Efficiency | ≥98.2% |
| PV Utilization | ≥99% |
| Self Consumption | ≤1.2W |
| Voc Range of PV | 12V system (DC20V~DC150V), 24V system (DC37V~DC150V), 48V system (DC72V~DC160V) |
| Maximum PV Module Open Circuit Voltage | For 12V battery: 150V, For 24V battery: 150V, For 48V battery: 160V |
| The Maximum Nominal PV power | 12V system (720W), 24V system (1440W), 48V system (2800W) |
| Selectable Battery Type | Vented/ Sealed / Gel / NiCd battery (Defined voltage by user) |
| Absorption Charging Voltage | Refer to the manual |
| Floating Charging Voltage | Refer to the manual |
| Overcharging Protection Voltage | 12V system (15V), 24V system (30V), 48V system (60V) |
| Rated Output Current | 60A |
| Output Voltage Ripple-peak | 100mV |
| Output Voltage Accuracy | ≤±1% |
| LCD | Refer to the manual |
| Temperature Protection | 75 °C / 167℉ |
| Fan-on Temperature | >45 °C / 113℉ |
| Fan-off Temperature | <40 °C / 104℉ |
| PV Reverse Polarity Protection | Yes (When Voc<100V only) |
| PV Over-voltage Protection | Yes (When Voc>180V, the controller will be burnt.) |
| Battery Overcharge Current Protection | Yes |
| Battery Overcharge Voltage Protection | Yes |
| Battery Low Voltage Protection | Yes |
| Acoustic Noise | ≤40dB |
| Cooling Way | Forced air cooling |
| Components | Industrial grade |
| Size (cm) | 21.5*11.5*5 cm / 8.46*4.52*1.96 in |
| Net Weight (Kg) | 1.3kg / 2.86lb |
| Gross Weight (Kg) | 1.4kg / 3.08lb |
| Safety Standards | EN 62109-1, EN 60730-1, EN IEC 61000-6-3, EN IEC 61000-6-1 |
| Protection Category | IP21 |
| Environmental Condition | Indoor |
| Operating Temperature | -20℃ ~ +55℃ / -4℉ ~ + 131℉ |
| Storage Temperature | -40℃ ~ +75℃ / -40℉ ~ + 167℉ |
8. User Tips
To maximize the performance and lifespan of your MPPT solar charge controller and connected battery system:
- Always ensure your solar panel array's voltage (Voc) is within the recommended range for your battery system to achieve optimal efficiency and prevent damage.
- Regularly monitor the LCD display or the smart app for any error codes or unusual readings to address potential issues promptly.
- For systems with multiple controllers, ensure they are properly configured for parallel operation to distribute the load evenly.
9. Warranty and Support
For warranty information, technical support, or service inquiries, please contact MakeSkyBlue Official Store directly through their official channels. Keep your purchase records handy when contacting support.





