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Address:11/F, Building A, Solar Energy Guigu Mansion, Kouyunfeng Road,
Queshan Road,DalangSub-District,
Longhua New Area, Shenzhen
Tel: 86-755-29309916 / 27043706
Fax: 86-755-29356511
Contacts: Mr. Alan 13530691998
24 hours service: 400-850-6511
The current position:Product >> LM-SERIES MPPT
LM-SERIES MPPT Solar charge controller
  • Features
  • Parameter

This is a smart solar charge controller which has advanced MPPT technology .Solar charge controller is one of the important parts in the off-grid solar system. For having the advanced MPPT technology, the controller can trace the peak power with 99% conversion efficiency. MPPT microprocessor, inside the controller,making 30% more charge current with significantly less power than tradition. In addition to this, easier installing and supporting to expand volume are other advantages. It can also store energy to different kinds of batteries. We provide battery choice(Vented、Sealed、Gel、NiCd).
1.MPPT charge mode,conversion efficiency up to 99%,can save 30%~60% of the power than traditional controller.
2.With high efficient MPPT operation scheme and adopting TI28035 chip,make the Solar panels utilization rate up to 99%.
Intelligent design,the device can be upgraded online,customers enjoy the lifelong upgrade service.
4.Compliance with the 2002/95/EC environment protecting demand,doesn’t include the Cadmium, hydride and fluoride
5.Adopting the well-known brand components,the devices can suffer the temperature not less than 105℃.The service life is designed to extend to 10 years in theory.
6.Charge mode: three stages (fast charge,constant charge,floating charge)
7.12V/24V/48V system auto recognize for easy control.
8.Nominal maximum solar input is DC 150V
9.Connected Battery Type choosing: Sealed lead acid, vented, Gel, NiCd battery. Other types of the batteries can also be defined.
10. LCD and LEDs show all kinds of parameter like products model, PV input voltage,battery voltage,charge current,charge power,work condition,and also can add customers’company name and website.
11. Communication Port.RS232 communication can provide communication protocol, This make the unified and integrated management more convenient to customers.
12. With providing a Microsoft by connecting with PC that can show the working state and all parameters in 7 languages.
13. Extensible LAN remote control.
14.Equipment integrity: controller+CD-ROM(microcomputer software) + communication wire+Anderson terminals;
15.CE,ROHS,FCC,PSE certifications approved.The device also can support to pass the other certifications.
16. 2 years warranty. And 3~10 years extended warranty service also can be provided.

Model: LM-DC12V/24V/48V-series 40A 50A 60A
Charge Mode  Maximum Power Point Tracking
Method 3 stages: fast charge(MPPT),constant voltage,floating charge
System Type DC12V/24V/48V Automatic recognition 
System Voltage 12V system  DC9V~DC15V
24V system  DC18V~DC30V
48Vsystem  DC36V~DC60V
Soft Start Time  12V/24V/48Vsystem  ≤10S
Dynamic Response 
Recovery Time
12V/24V/48Vsystem  500us
Conversion Efficiency 12V/24V/48Vsystem  ≥96.5%,≤99%
PV Modules Utilization Rate 12V/24V/48Vsystem  ≥99%

Input Characteristics

MPPT Working 
Voltage and Range
12V system DC18V~DC150V
24V system DC34~DC150V
48V system DC65~DC150V
 Low Voltage Input 
Protection Point
12V system DC16V
24V system DC30V
48V system DC60V
Low Voltage Input 
Recovery Point
12V system DC22V
24V system DC34V
48V system DC65V
Max DC Voltage 12V/24V/48V system DC160V
Input Overvoltage 
Protection Point
12V/24V/48V system DC150
Input Overvoltage 
Recovery Point
12V/24V/48V system DC145V
Max. PV Power 12V system 570W 700W 900W
24V system 1130W 1400W 1700W
48V system 2270W 2800W 3400W

Output Characteristics

Selectable Battery Types
 (Default type is GEL battery)
12V/24V/48Vsystem Sealed lead acid, vented, Gel, NiCd battery
(Other types of the batteries also can be defined)
Constant Voltage 12V/24V/48V system Please check the charge voltage according to the battery type form.
Floating Charge Voltage  12V/24V/48V system
Over Charge
 Protection Voltage
12V system 14.6V
24V system 29.2V
48V system 58.4V
Rated Output Current 12V/24V/48V system 40A 50A 60A
12V/24V/48V system 44A 55A 66A
Temperature Factor 12V/24V/48V system ±0.02%/℃
12V/24V/48V system 14.2V-(The highest temperature-25℃)*0.3
Output Ripples(peak) 12V/24V/48V system 200mV
Output Voltage 
Stability Precision
12V/24V/48V system ≤±1.5%


LCD display  Input,output parameter and output power etc
(check the LCD display instruction)
LED display  3 LEDs indicates:Fault indicate light,charge indicate light,
power source indicate light(check the LED instruction)
Software Control through PC
(communication port)
RS232 (matching) or LAN(optional)


Input Low Voltage Protection Check the input characteristics
Input Overvoltage Protection  Check the input characteristics
Input Polarity Reversal Protection yes
Output Overvoltage Protection  Check the output characteristics
Output Polarity Reversal Protection yes
Short-circuit Protection Recover after eliminating the Short-circuit fault,no
 problem for long term Short-circuit 
Temperature Protection 95℃
Temperature protection Above 85℃,decrease the output power,decrease 3A per degree.

Other Parameters

Noise ≤40dB
Thermal methods Forced air cooling,fan speed rate regulated by temperature,
when inner temperature is too low,fan ran slowly or stop;
when controller stop working,fan also stop ran.
Components World brand raw materials. Compliance with EU standards.
All rated temperature of electrolytic capacitors not less than 105℃
Smell No peculiar smell and and toxic substances.
Environment Protection Meet the 2002/95/EC,no cadmium hydride and fluoride


Measurement DxWxH(mm) 270*185*90
N.G(kg) 3
G.N(kg) 3.6
Color Blue/Green (optional)
EMC EN61000
Type of Mechanical Protection IP21


Humidity 0~90%RH ( no condense)
Altitude 0~3000m
Operating Temperature -20℃ ~ +40℃ 
Storage Temperature -40℃ ~ +75℃ 
Atmospheric Pressure  70~106kPa