Guangzhou Queenswing Solar Energy Co., Ltd.

China Manufacturer with main products: Power Inverter, Solar Charge Controller, Solar Panel, Battery, Modified Power Inverter, Pure Sine Wave Inverter, Car Power Inverter, Low...

Home  >Products Catalog > MPPT Solar Charge Controller > 60A 12/24/36/48V MPPT Solar Charge Controller (QW-MT4860A)

60A 12/24/36/48V MPPT Solar Charge Controller (QW-MT4860A)

FOB Price: 342.00 - 355.00 USD/Unit
Supply Ability: 50,000 Unit/Units per Month
Shipping: in 7 - 15days
Payment Terms: T/T, Western Union, MoneyGram
Update Time: 2016/3/11
In Stock

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Export Markets: North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
Place of Origin: Guangdong in China
Packaging Details: Gift Box / Unit

Quick Details

  • Maximum Current: 60a
  • Rated Voltage: 12V/24/36/48V Auto
  • Application: Charger Controller
  • Model Number: QW-MT4860A
  • Brand Name: Queenswing
  • Rated System Voltage: 12V/24/36/48V Auto Work
  • Rated Battery Current: 60A
  • Charging Current: 60A
  • Battery Voltage: 12V/24/36/48V
  • Max. PV Open Circuit Voltage: 150VDC
  • MPPT Efficiency: 99.9%
  • Protection Level: IP32
  • Charge Mode: MPPT
  • Dimension: 180.7 X 170 X 72mm
  • Keyword: MPPT Solar Controller


60A 12/24/36/48V MPPT Solar charge Controller (QW--MT4860A )

MPPT controller's energy utilization efficiency is 15%~20% higher than PWM controller. The MPPT efficiency can reach 99.97%.

Model MT4845 MT4860
Battery voltage 12V/24V/36V/48V 12V/24V/36V/48V
Charging current 40A 60A
Max. voltage of solar panel 150V 150V
1. Product Display:

2. Main Features:

1. Can be used in all kinds of bad environment with Aluminum frame.

2. Double crest or multi crest tracing technique design, when the solar panel is under shadow or part of the solar panel is damaged, multi crest will turn up in IV curve, and the controller can still trace the Max. Power Point.

3. Builtin maximum power point tracking algorithm which could promote energy utilization efficiency of pv system. The charging efficiency is 15%~20% higher than PWM mode.

4. Adopting sorts of tracking algorithm to track the best working point of I-V curve promptly and accurately, the MPPT efficiency could reach to 99.9%

5. The use of advanced digital power technology, circuit energy conversion efficiency is as high as 98%

6. Four stage charging order mode: MPPT-equalizing charging-boost charging-float charging.

7. With current-limiting charging mode, when the power of solar panel is over-sized and charging current exceeds the rated current, the controller will lower the charging power, which enables the system to work under the rated charging current.

8. It can communicate with PC by communication wires and cables, read or set controller's running parameters and monitor the system operation status.

9. The controller can realize networking operation by the link with telecommunication cable.

10. Have the fault code indication; it helps users confirm the system fault

11. 12V/24V/36V/48V auto identified.

12. Support data storage, the storage span can reach 5 years.

13. It can connect with LCD screen monitoring and the controller parameters are amendable.

14. Builtin temperature sensor, when the temperature exceeds the set value, the charging current will lower down followed by the decrease of temperature, so as to control the controller's temperature rise.

15. With temperature compensation function to adjust the charge and discharge parameters automatically, which can improve battery service life.

16. Various system protection functions. Including over-charge, over-discharge, over-load, over-heat, the battery reverses connection protection and so on.

17. TVS lighting protection.
3. MPPT charging algorithm Instruction

The full name of the MPPT is maximum power point tracking. The maximum power point will change due to the surrounding temperature and sunshine condition. MPPT controller will adjust the parameter constantly according to different conditions to make the system working in the largest power point.

1---Solar panel.
The power for battery charging.
Central nervous of the system which controls the overall system.
3---RS485 Telecommunication cable.
Communication line of the controller which is necessary for parallel operation.
It can realize info exchange with the controller by RS232 and can monitor the system timely.
5---Open space.
It can insure the safety of operators.(the switching element is optional).
A battery pack which compose of battery in series or in parallel.
7---LCD display.
The LCD can display the system status, parameters, records and the set value. (You can just choose one communication way: PC or LCD).

5. Instructions.
1. The controller will identify the battery voltage automatically. Please connect the battery first and ensure the connection is reliable, if you need parallel operation, please electrify the slave engine first, otherwise it will identify the system volt wrongly.
2. MPPT controller is designed according to solar panel's I-V curve, so when the controller connect the general constant voltage DC source, the controller may not work.
3. Advice is installed in the ventilated and heat dissipated environment due to the controller will fever during operation.
4. The controller will detect the surrounding temperature to compensate the battery charging voltage so ensure the controller and battery is in the same environment.
5. Choosing the proper cable with enough capacity to avoid redundant power loss in the circuit. Too much circuit loss may lead to wrong judgment.
1. Full charge is very important for the battery. The battery should be full charged at least once a month or the battery will suffer permanent damage. The battery can be full charged only when the input power of the battery is more than power consumption of the load.
2. Please do not dip the controller into the corrosive liquid or the controller will be damaged and release harmful gas.
3. The solar panel's terminal voltage may exceed human safety voltage when connect 24V system, when manipulation is needed, please use insulating tools and ensure the hands dry.
4. Because the battery store lots of energy, do not allow the battery short circuit in any case. We suggest tandem connect a fuse on the battery
5. The battery may release combustible gas, please far away from the spark.
6. Ensure the children are far away from battery and controller
7. Please abide by the battery manufacturer's safety suggestion.

Networking introduction.
The controller supports parallel operation, before working, please set different addresses for each controller; the controller's factory default is slave engine, and it can be customized into main engine. More details please check SR-RM-2 parts specification.

PC monitoring.
The controller can communicate with PC.
1. Firstly, connect the enclosure USB 232 wire with controller and PC.
2. Install USB 232 drive by use of the enclosure CD.(When you use it at first time).
3. Open the upper computer software, select the port and click to link. If connect succeed, it means that the controller has set up communication with the PC, if not, please check the port.

Installation instructions.
1. Loosen the four screws and open the panel (picture 1).
2. Please take away both the baffle of front and side wiring hole and take out the water joint from the accessory, install it in the wiring hole.
3. Cross the side plate by use of suitable energize wire rod and telecommunication cable. (picture 2).
4. Fix the wire rod successively to controllers inside wiring terminal (picture 3).
5. Close the panel after connecting the LCD and telecommunication cable (parallel operation is needed), and then tighten the screws(picture 4).
6. Fix the controller at the installation place.

6. Protections.
1. Waterproof protection
Waterproof degree::IP32.
2. Input power limit protection
When the PV power exceeds the rated power, controller will limit the PV power under the value of rated power so as to prevent the controller from being damaged, the controller will charge by limited current.
3. Battery reverse connection protection
Battery reverse connection will not damage the controller but the system will stop working.
4. The voltage of PV input terminal is over value
When the voltage of PV input terminal is over value, controller will shut the PV input automatically.
5. Short circuit protection of PV input terminal
Load short circuit will not damage the controller but controller will stop output.
6. Reverse charge protection at night.
Prevent the battery from discharge at night.
7. TVS lightning protection
 Over temperature protection

7. Fault code.
Fault code Indication
BAT_LDV Battery is over discharge
BAT_OVD The system is over voltage
OVRTMP1 The controller inside is over temperature
OVETMP2 The outside controller is over temperature
P_OVRCRT The solar panel is over current
P_SHTCRT The solar panel is short circuit
P_OVP The solar panel is over voltage
P_SHADOW The solar panel is shaded
P_EDDY Reverse current in solar panel
P_WK_OVP Tracing working voltage exceeds 140V
BAT_SNSR Fault sampling of outer battery
ERR_485 Abnormal communication of RS485 
8. Parameters.
Marks: n represents ×2/24V; ×3/36V; ×4/48V.
Parameters Value Adjustable Default value
Model MT4860 MT4845

System voltage 12V/24V/36V/48V Auto

No-load loss 0.7 W~1.5W

Max. Input voltage <150V

Rated charging current 60A 45A

Max. Input power
800W/12V 1600W/24V  2400W/36V      3200W/48V 600W/12V 1200W/24V  1800W/36V      2400W/48V

Transfer efficiency ≤98%

MPPT tracing efficiency >99%

Over voltage protection 16V~17.0V;×nV 16.0V
Limited charge voltage 15.5V~16V;×nV 15.5V
Equalizing charge voltage 15.0~15.5V;×nV(25oC) 15.2V
Equalizing charge interval 3~30 day 30day
Boost charge voltage 14.0V~15.0V;×nV(25oC) 14.4V
Boost charge return voltage 12.3V~13.5V;×nV(25oC) 13.2V
Float charge voltage 13.2V~14.0V;×nV(25oC) 13.8V
Over discharge return voltage 12.0V ~ 13.0V;×nV 12.6V
Over discharge voltage 9.8V ~ 11.8V;×nV 11.0V
Boost charge time 1H ~ 3H 2H
Equalizing charge time 1H ~ 3H 1H
Temperature compensation -2.0 ~ -5.0  mV/oC/2V -3.0
Over temperature protection Yes

Light controlled open voltage 5V

Light controlled delay time 5min

Device address 1 ~ 16 2(slave)
Working temperature -35oC ~ +45oC

Protection level IP32

Weight 4.8 Kg 4.2 Kg

Max. Wiring dimension 25 mm2

Altitude ≤ 3000 m

Product dimension 318.7*170*128(mm) 286.7*170*128(mm)


9. Warranty: 1 year
If you can cooperate with us, we will be honored and you will benefit from:
L - The good construction warranty-1 years
L - Your client satisfied on the right schedule and quality
L - Your can get good reputation from your market and obtain more orders
L - Our professional service before and after sale
L - The reasonable price
L - Any questions from you are welcome and will be replied in 24 hours

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

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

By courier such as DHL, EMS, FedEx, TNT, UPS ect.
By our shipping agent(by sea, by air or carrier)
By your shipping agent.
By domestic courier to any city of China.

11. Some about us
Queenswing is a professional manufacture specialized in Power inverter and solar products, We have professional development team. We pursues to establish the culture of "quality first, reputation best ".

Product category
Solar charge controller
Battery charger
Car Power inverter
Car Inverter with USB Port
Pure sine wave invertrer
UPS Pure sine wave inverter with charger
Modify sine wave inverter
UPS power inverter with charger

Our products usually are exported big quantity in to Europe, USA, African, Russia, Australiaetc. And our power inverter serials enjoy better reputation. With reliable quality and stable performance.

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    In order to improve the quality of service, ECVV will charge for a 100CNY deposit for the agent purchasing order, and the deposit will be part of subsequent purchasing costs.

    After paying a deposit, if the purchasing order is not completed because of unsatisfied ECVV services, ECVV will refund your deposit.

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