300W max input power,25V max solar voltage
LCD display,common negative
Bluetooth built-in,IP65

  • Smart PWM technology, high efficiency 
  • Backlit LCD displaying system operating information and error codes 
  • LCD display design, read operating data and working condition easily. 
  • LED Bar for easy to read charge state and battery information 
  • 7 Battery Type Compatible  Lithium-ion, LiFePO4, LTO, Gel, AGM, WET, and Calcium 
  • Waterproof design, suitable for indoor or outdoor use
  • Support Android mobile phone APP, realize wireless monitoring function of solar controller
  • Use high performance, ultra-low power consumption Bluetooth dedicated chip
  • Adopt Bluetooth 4.2 and BLE technology, communication distance up to 10m
  • Real-time automatic fault alarm
  • External temperature sensor optional, automatic temperature compensation
  • Built-in 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 Four stages charge way: Fast, boost, equalization, float
  • With current-limiting charging mode, when the power of solar panel is over-sized and charging current exceeds the rated current( ≤60% of rated current), the controller will lower the charging power, which enables the system to work under the rated charging current
  • Perfect EMC & thermal design
  • Full automatic electronic protect function

Item Win300-NBT
System Voltage 12V
Max Charging Power 300W
Max Voltage On Battery Terminal 20V
Max Voltage On PV Terminal 25V 
Temperature Compensation -4.17mV/K per cell (Boost, Equal), -3.33mV/K per cell (Float)
Battery Type  AGM, GEL, WET, Calcium, LiFePO4, Li-ion, LTO
Communication BlueTooth
Dimensions (mm) 144*104*28
Weight (g) 180g
Self Consumption <10mA
Grounding Common Negative
Mounting Vertical Wall Mounting
Maximun Ternimals Wire Size 10AWG (4mm²) 
Ambient Temperature -20~+55℃
Storage Temperature -25~+80℃
Ambient Humidity 0~100%RH
Protection Degree IP65
Max Altitude 4000m  

Battery Type AGM GEL WET Calcium LiFePO4 Li-ion LTO
Fast Voltage 9.0V~14.0V,Current=Rated Charge Current
Boost Voltage 14.4V 14.1V 14.7V 14.9V 14.4V 12.6V 14.0V
Equalization Voltage N/A N/A 15.0V 15.0V N/A N/A N/A
Float Voltage 13.6V 13.6V 13.6V 13.6V N/A N/A N/A
Under Voltage Recharging 12.5V 12.5V 12.5V 12.5V 14.2V 12.4V 13.8V
Low Voltage Disconnect 11.0V 10.8V 11.0V 11.0V 10.4V 9.0V 10.0V
Over Voltage Protection 15.8V 15.8V 15.8V 15.8V 14.6V 12.8V 14.2V

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