40A 12/24V Solar Charge Controller with LCD Display (QWM-1440A)

Features:
CPU controlled solar charge controller is able to adjust the charge current and decide if to supply the loads electricity according to the voltage of battery. The product also has following features:
1. Generally keep the battery on full voltage condition.
2. Prevent the battery from over-charging.
3. Prevent the battery from over-discharging.
4. Prevent supplying electricity from the battery to solar panels during nights.
5. Reverse Polarity Protection for Battery
6. Reverse Polarity Protection for Solar panels.
7. When the current of load exceeds the rated one of controller, the controller will activate the protection mode and lock up, the screen shows"Overload"
8. When the circuit happens, the controller will activate the protection mode and lock up, the screen show "Short circuit".
9. When the battery's voltage is low, the controller will automatically cut off loads from system and resume its working once the voltage of battery is back to normal.
10. Protection from the lightning strike.
11. When controller is normally working, the LCD Screen will show the voltage of battery, charging current and current of loads in turn in every 5 seconds.
12. Controller is always counting and saving the Charging current hours and discharging current hours of the battery.
13. When controller starts up, controller will self-setup the charging-off voltage, the load-off voltage and the load-on voltage according to the voltage of battery. These default parameters are setup as the standard environment temperature is 25 degrees centigrade.
14. According to varies system temperature, the controller will automatically compensate the temperature of the charging voltage.
15. Users could setup the charge-on or off voltage, the load-off voltage, the load-on voltage, etc, according to their requirements.
16. To prevent battery from over discharging, controller will automatically control the lowest load-off voltage of the load, which is no less than 10V (as per 12V battery) or 20V (as per 24V battery). If voltage of the battery is less than 10V (or 20V), the button "V" will stop working.
17. To recover the default parameters, please keep pressing the button "Menu" for over 5 seconds.

Connection:
1. Connect "+" and "-" poles of battery with the correct ports on the controller (the third and fourth ports from the left)
2. Connect "+" and "-" poles of solar panel with the correct ports on the controller (the first and second ports from the left)
3. Connect "+" and "-" poles of load with the correct ports on the controller(the fifth and sixth ports from the left)

Attention:
1. Correctly connect the electrodes of solar panels, battery and loads.
2. Choose the proper wire according to the current of the loads, the diameter could not be too small. Bigger than 4 mm² Wire is suggested!

About us:

Guangzhou Queenswing Solar Energy Co. Ltd. Is a professional manufacturer and exporter of solar products including power inverter, solar charge controller, solar panel and solar battery in China. To provide high-quality product and considerate service is always our basic policy. We believe high quality creates business and progress is from improvement.

Main products:
Pure sine wave power inverter
Modified sine wave power inverter
UPS power inverter with charger
Car power inverter
Solar charge controller
Solar panel
Solar battery
Our power inverter and solar products are exported to most global coutries and get good reputation because of our favorable quality and stable performance.

Contact us get more infomations.

Tel: 86-20-38260096

Skype:hanyinyan315

Email:sales1@gzqueenswing.com 

Web: www.gzqueenswing.com or queenswing.en.made-in-china.com 

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