$155.00 -13%
Limited edition: ONLY SOME LEFT

MPPT solar charge controller,40A,30A,20A,12V/24VDC Auto.

Max PV input : 100V.

Meter : RM-5,LCD display,.

Product Overview:

1,This product can keep monitoring the solar panel's generating power and tracking the highest voltage and current values (VI) in real time, enabling the system to charge the battery in maximum power. It's designed to be used in off-grid solar photovoltaic systems to coordinate operation of the solar panel, battery and load, functioning as the core control unit in off-grid photovoltaic systems.

2,This product features an LCD screen which can dynamically display the operating status, operating parameters, controller logs, control parameters, etc. Users can conveniently check parameters by the keys, and modify control parameters to cater to different system requirements.

3,The controller utilizes standard Modbus communication protocol, making it easy for users to check and modify system parameters on their own. Besides, by providing free monitoring software, we give users the maximum convenience to satisfy their varied needs for remote monitoring.

4,With comprehensive electronic fault self-detecting functions and powerful electronic protection functions built inside the controller, component damage caused by installation errors or system failures can be avoided to the greatest extent possible.

Product Features:

◆ A built-in maximum power point tracking algorithm can significantly improve the energy utilization efficiency of photovoltaic systems, and raise the charging efficiency by 15% to 20% compared with the conventional PWM method.  

◆ The product boasts an optimum MPPT tracking efficiency of up to 99.9%.

◆ Advanced digital power supply technologies raise the circuit's energy conversion efficiency to as high as 98%.

◆ Charging program options are available for different types of batteries including gel batteries, sealed batteries, open batteries, lithium batteries, etc.

◆ LED fault indicators and an LCD screen which can display abnormality information help users to quickly identify system faults.

◆ Historical data storage function is available, and data can be stored for up to a year.

◆ The controller is equipped with an LCD screen with which users can not only check device operating data and statuses, but also modify controller parameters. 

◆ The controller supports standard Modbus protocol, fulfilling the communication needs of various occasions.

◆ The controller employs a built-in over-temperature protection mechanism. When temperature surpasses the set value, the charging current will decline in linear proportion to the temperature so as to curb the temperature rise of the controller, effectively keeping the controller from being damaged by overheat.

◆ Featuring a temperature compensation function, the controller can automatically adjust charging and discharging parameters in order to extend the battery's service life. 

Electric Parameters:





System voltage

12V/24V Auto

No-load loss

0.7 W to 1.2W

Battery voltage

9 to 35

Max. solar input voltage

100V (25°C), 90V (-25°C)

Max. power point voltage range

Battery voltage +2V to 75V

Rated charging current




Rated load current


Max. capacitive load capacity


Max. photovoltaic system input power

260W/ 12V

520W/ 24V

400W/ 12V

800W/ 24V

550W/ 12V

1100W/ 24V

Conversion efficiency

≤ 98%

MPPT tracking efficiency


Temperature compensation factor

-3.0mv/ °C/ 2V (default)

Operating temperature

-35°C to +45℃

Protection degree






Communication method



≤ 3000m

Product dimensions




Meter : RM-5,LCD display.

Product Features:

1) Adopts a 128*64 LCD screen, with the menus designed with numeric and graphic forms.

2) With a graphical design, the main menu is artistic as well as informative: it can display up to 10 parameters and states.

3) Able to read the historical data of a certain day.

4) A low-power-consumption BLE4.0 feature enables more powerful functions when pairing with a mobile APP (optional).

5) Employs two indicator lights to indicate controller abnormalities and communication errors respectively.

6) Features a controller abnormality voice alarm function which can be switched on/ off.

7) A backlight time setting function is available.

8) Able to monitor live data and operating statuses of the controller .On/ off switching, clearing of historical data and restoring to factory settings can all be done with this unit.

9) Adoption of standard Modbus communication protocol.

10) Features standard RJ12 as the communication interface.

11) With no need of an external power source, connection with a controller by means of a data cable will be enough to enable the unit to be powered .

12) Boasts an industrial grade design and excellent anti-interference capacity, the product can function well in various tough conditions.


 Function Descriptions:

With the menus and operations on the navigation keys, the following functions can be realized:

1) Real-time monitoring and checking of live data, charging and discharging parameters, load state, fault codes, historical data, device information, etc. of an individual controller;

2) Setting of related charging and discharging parameters;

3) Load mode setting, load on/ off switching (manual mode);

4) With the optional bluetooth-version display unit, more powerful functions can be realized with the help of a mobile App. (Model: RM-5B)



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