Guangdong, China
Business Type:
Manufacturer/Factory, Trading Company
OEM/ODM Service
Sample Available

Solar Controller, Solar Charge Controller, Solar Regulator manufacturer / supplier in China, offering 12/24/36/48V 30A Solar Regulator Solar Charge Controller with USB (QWP-SR-HP4830A), New 5kw/5kVA DC48V Inverter off-Grid Solar Power Converter (QW-5kVA4850 plus), 5kw/5kVA off-Gid Hybrid Solar Power Inverter with Powerfactor 1.0 (QW-5kVA4850plus) and so on.

Gold Member Since 2013
Supplier Homepage Products PWM Solar Charge Controller 12V/24V/36V/48V LCD Solar Controller 12/24/36/48V 30A Solar Regulator Solar Charge Controller with USB (QWP-SR-HP4830A)

12/24/36/48V 30A Solar Regulator Solar Charge Controller with USB (QWP-SR-HP4830A)

Purchase Qty. / Reference FOB Price
1-99 Pieces US $78
100-299 Pieces US $75
300-499 Pieces US $72
500-999 Pieces US $68.68
1,000+ Pieces US $63
Port: Guangzhou, China
Production Capacity: 30000unit / Month
Payment Terms: T/T, Western Union, Money Gram
Condition: New
Certification: CE
Application: Solar System Controller, Charger Controller, Lighting Controller, Solar Working Station, Voltage Controller
Rated Voltage: 12/24/36/48V Auto
Rated Power: 12V/450W 24V/900W 36V/1350W 48V/1800W
Maximum Current: 30A

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Basic Info.

Model NO.
Charging Mode
Max. Solar Energy Input Voltage
Max. Voltage at The Battery End
LCD Display
USB Output
No-Load Loss
Applicable Battery
Lead-Acid Battery; Gel Battery; Lithium Battery
Solar Controller
Transport Package
1PC/Color Box
CE, Rohs, SGS
Guangzhou, China
HS Code

12/24/36/48V 30A Solar Regulator Solar Charge Controller with USB (QWP-SR-HP4830A)

12/24/36/48V 30A Solar Regulator Solar Charge Controller with USB (QWP-SR-HP4830A)
12/24/36/48V 30A Solar Regulator Solar Charge Controller with USB (QWP-SR-HP4830A)


This controller applies in solar photovoltaic systems, which coordinates the working of solar panels, batteries and loads. It adds some protection functions, so that the entire system can be in efficient and safe operation. The extremely low consumption makes this controller suitable for profes-sional applications in telecommunications and traffic management technology.


Product Features
1.Automaticsystem voltage identification
2. Charging program options for sealed, GEL and flooded  lead-acid batteries and lithium batteries are available.
3. An upgraded 3-stage PWM charging algorithm is adopted.Application of an equalizing charge to the battery periodically or when over discharged, can effectively prevent the battery from non-equalization andsulfuration,thus extending the battery's service life (with the exception of GEL and lithium batteries).
4. With temperature compensation employed, charging parameters can be automatically adjusted (with the exception of lithium batteries).
5. A wide range of load working modes facilitate the product's application to different types of street lights and monitoring devices.
6. The product provides overcharge, over-discharge, overload protection, as well as short-circuit and reverse-connection protection.
7. By virtue of an advanced load starting method, large-capacitance loads can be started smoothly.
8. A range of parameter settings and power-down saving functions are available ,thus requiring no repeated setting.
9. The product provides a dot matrix graphic LCD screen and a human-machine interface with 2 keys.
10.The user-friendly design of browser and dynamic interfacesensures convenient and intuitive operations.
11. (An optional communication function) provides a RJ12 data port (output of TTL232 level or bluetooth signals), with the data adopting the standard Modbus protocol,and can be used together with our upper computer monitoring
 software or mobile phone APP.
12. Boasting an industrial grade design, the product can function well in various tough conditions.
13.TVS lighting protection is adopted.

Panel Structure
12/24/36/48V 30A Solar Regulator Solar Charge Controller with USB (QWP-SR-HP4830A)
LCD Display
12/24/36/48V 30A Solar Regulator Solar Charge Controller with USB (QWP-SR-HP4830A)
Product Display:
12/24/36/48V 30A Solar Regulator Solar Charge Controller with USB (QWP-SR-HP4830A)

Five Load Working Modes
1.Pure light control (0)
2.Light control + time control (1 to 14)
3.Manual mode (15)
4. Debugging mode (16)
5. Normal on (17)

LED DisplayModeLED DisplayMode
0Pure light control mode9Light control + time
control (9 hours)
1Light control + time
control (1 hour)
10Light control + time
control (10 hours)
2Light control + time
control (2 hours)
11Light control + time
control (11 hours)
3Light control + time
control (3 hours)
12Light control + time
control (12 hours)
4Light control + time
control (4 hours)
13Light control + time
control (13 hours)
5Light control + time
control (5 hours)
14Light control + time
control (14 hours)
6Light control + time
control (6 hours)
15Manual mode
7Light control + time
control (7 hours)
16Debugging mode(default)
8Light control + time
control (8 hours)
17Normal on mode

Error Code List

Code on LCD screenCorresponding error
E0No error
E1Battery over discharge
E2Battery overvoltage
E3Undervoltage warning
E4Load short circuit
E5Load overload
E6Temperature too high inside controller
E8Charging current too high
E10Solar panel input voltage is too high

Common Problems and Solutions
SymptomsCauses and Solutions
LCD screen does not light upCheck whether the battery is correctly connected.
Incomplete display or no renewal on LCD screenCheck whether the ambient temperature is too low and whether the display recovers when the temperature rises.
No charging with sunlight presentCheck whether the solar panel is correctly connected and contact is good and reliable. Check whether the solar panel voltage falls below the battery voltage.
The sun icon does not light up, while the solar panel icon does. The battery voltage is normal, but there is no output.The load will be switched on automatically after 10 minutes (set by the user).
The battery icon flashes quickly, and there is no output.System overvoltage. Check whether the battery voltage is too high.
The battery icon flashesslowly, and there is no output.The battery is over-discharged, and will recover when recharged adequately.
The load icon flashes quickly, and there is no output.The load's power exceeds the rated value or it's short-circuited. After removing the problem, long press the key or wait until it recovers automatically.
The load and the encircling light ring stays lit, and there is  no output.Check whether the power-consuming device is connected correctly and reliably.
Other symptomsCheck whether wiring is sound and reliable, and system voltage is correctly recognized.
The charging and discharging amp-hrs displays: 9999.K AhThe decimal point flashes indicating that the displayed value has reached its upper limit. Long press   to reset it.

Technical Parameter:

Rated current30A/40A50A/60A30A/40A 
System voltageAutomatic recognition of 12V/24V Automatic recognition of 12V/24V/36V/48VDefault automatic identification
Manual setup
Rated power12V/450W
No-load loss< 13mA/12V;< 15mA/24V<30mAThe lower the system voltage, the smaller the no-load loss.
Max. Solar energy input
Max. voltage
at the battery end
Battery typeParameters 
Overvoltage protection16.0V×1/12V;
Equalizing charging
Boost charging voltage14.614.414.214.4
Floating charging voltage13.813.813.8-
Charging recovery voltage13.2V
Over-discharge recovery voltage12.5V(settable with the keys)
Over-discharge voltage11.0V(settable with the keys)
Equalizing charging interval30days-- 
Equalizing charging time1H--
Boost charging time2H-
Light controlvoltageLight control on 5V, light controloff 6 V (light control on plus 1 V)×1/12V;
Light control
judgment time
10 minutes
USB functionYesoptionalNo 
Bluetooth functionoptional 
Operating temperature-25ºCto+55ºC; 
IP protection degreeIP30 
Net weight390g650g650g 
Battery plate reverse connection protection note 1, a battery reverse connection protection note 2, charging battery board short circuit protection, charging the battery open circuit protection, charging over current protection, overload protection, load short-circuit protection controller and over temperature protection.
Dimensions164.0×103.5×47.0(mm)189.27×127.2×54.0 (mm)189.27×127.2×54.0 (mm) 


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.

7. Payment Terms:
T/T, Western Union, Money Gram
Production arranged after receipt of payment.

Lead Time:
Sample order will be delivered within 7 working days.
Order quantity below 100PCS, delivery time is 7-15 working days.
Container order will be delivered within 15-30 working days.

Courier: FedEx, DHL, TNT, UPS, Aramex, EMS ect.
Forwarder: By sea / air or Customer designated

Other Models:
12/24/36/48V 30A Solar Regulator Solar Charge Controller with USB (QWP-SR-HP4830A)

8. Contact us:

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