40 Amp 12/24/48V MPPT Solar Charge Controller

40 Amp MPPT solar charge controller, automatically identify 12V/24V/48V system voltage, Max PV input power 570W/12V, 1130W/24V, and 2270W/48V, LCD display for working status, high efficiency controller for solar panel and battery charge in PV system.
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Delivery date: 6-20 days
Products specifications


  • MPPT solar charge controller 12V/24V/48V auto identification, max. PV input voltage 150V, maximum PV input power 570W (12V), 1130W (24V), 2270W (48V).
  • LCD display real-time power generation and current, daily power generation, cumulative power generation and fault record.
  • Adopting the advanced MPPT algorithm to track the maximum power point of solar power generation in real time, high charging efficiency over 98.5% and tracking accuracy over 99.73%.
  • Support lead-acid batteries, colloidal batteries and lithium batteries. 3-stage battery charging for efficiency and safety.
  • Battery temperature sensor (BTS) automatically provides temperature compensation to ensure the controller's life.
  • Multiple protection including PV array short circuit, overvoltage, and overcurrent reverse polarity protection; battery overcharge, reverse connection, under voltage protection.


Rated Voltage 12V/24V/48V Auto
Rated Current 40 Amp
Maximum Protection Current 42 Amp
Battery Voltage Identification Range 12V (DC 9V-15V), 24V (DC 18V-30V), 48V (DC 36V-60V)
MPPT Operating Voltage Range 12V (DC 18V-150V), 24V (DC 34V-150V), 48V (DC 65V-150V)
Maximum PV Input Power 12V: 570W, 24V: 1130W, 48V: 2270W
PV Input Low Voltage Protection Point 12V: DC 16V, 24V: DC 30V, 48V DC 60V
PV Input Low Voltage Recovery Point 12V: DC 18V, 24V: DC 34V, 48V DC 65V
Limit Input Voltage DC 170V
PV Input Overvoltage Protection Point DC 175V
PV Input Overvoltage Recovery Point DC 170V
Charging Method 3 stage: constant current (MPPT), equalize charge, float charge
System Type 12/24/48V Automatic identify (36V manual setting)
Static Power Consumption 2W
Machine Efficiency 96.50%
PV Module Utilization 99.97%
Float Charge Voltage 12V (13.75V), 24V (27.5V), 48V (55V)
Equalize Charge Voltage 12V (14.2V), 24V (28.4V), 48V (56.8V)
Recommanded PV Module Voltage 12V (DC 18V-60V), 24V (DC 36V-72V), 48V (DC 72V-144V)
Temperature Compensation -3mV℃/2V
Temperature Protection 85℃
Temperature Rise Protection 80℃ or more to reduce power output
Protective Function PV array short circuit, overvoltage, overcurrent reverse polarity protection; battery overcharge, reverse connection protection, under voltage protection
Working Temperature -10℃ ~ +45℃
Humidity 0~90% RH (no condensation)
Altitude 0~3000m
Security Level CE, PSE, FCC, EMC
Mechanical Protection Class IP21
Optional Battery Type* Lead-acid battery (Factory default), colloidal batteries, liquid batteries, lithium batteries (Also can be customized for other types of battery charging)
Product Size 260*192*80mm
Weight 3.7kg


* If you need this controller for charging the lithium battery, please contact us in advance and provide us the parameters of your lithium battery including equalize charge voltage, float charge voltage, maximum charge current, end-of-discharge voltage, and recovery voltage, so as to help you choose a most suitable charger controller.

Wiring Diagram

MPPT solar charge controller connection diagram

Tips: Why you need a MPPT solar charge controller?

MPPT solar charge controller can detect the solar panel power generation voltage in real time, and track the highest voltage and current value (VI), so that the PV system can charge the battery at the maximum power output. MPPT solar charge controller is applied in solar photovoltaic system, coordinating the work of solar panel, battery and load, which is the brain of PV system.

What is the principle of MPPT charge controller? Firstly, it should detect the DC voltage and output current of the main circuit. Then the output power of the solar array should be calculated. And finally realize tracking the maximum power point.

The performance of solar cell module can be expressed by U-I curve. The instantaneous output power (U*I) of the solar cell moves along this U-I curve. The output of the solar cell is affected by the external circuit. Maximum power tracking technology is the use of power electronic devices with appropriate software to make solar cell always output maximum power. Without the maximum power tracking technology, the output power of the solar cell cannot reach the optimal value in any case, thus reducing the utilization rate of the solar cell module.

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