2-4 String 2 3 String Lithium Iron Phosphate Battery Charger Board MPPT Solar Controller CN3722

2-4 String 2 3 String Lithium Iron Phosphate Battery Charger Board MPPT Solar Controller CN3722

Description:    
- 8.4V, 12.6V, 16.8V lithium battery    
- 7.2V, 10.8V, 14.4V lithium iron phosphate battery    
- 2-4 series of lithium batteries, lithium iron phosphate battery charging management board    
- 3A high current intelligent trickle, constant current, constant voltage charging management board    
 
The maximum power point tracking (MPPT) solar cells    
 
Maximal power point tracking (MPPT) is to ensure that the changes in light intensity, maximum output power of photovoltaic cells has been, in order to make full use of solar energy. In general, the need to achieve MPPT function with a switch mode DC-DC converter, product keep the output voltage and charging current (maximum output power).    
 
CN3722 is a step-down switch mode DC-DC converter the photovoltaic maximum power point tracking function, the input voltage up to 25V, is very suitable for the input voltage and the voltage of the battery is used relatively large.    
 
Charging management board characteristics:    
- High-end technology of maximum power point tracking MPPT solar energy charging management chip, with a trickle, constant current and constant voltage charging management    
- Imported high frequency low conduction resistance of double MOS tube, high current diode, high efficient flat power inductor current sensing resistor, Kang Tong    
- Intelligent temperature control cooling system, automatic detection of charging management board temperature and open the radiator (need to reprovision external radiator)    
- Charging speed and efficiency and less heat, speed    
- Double status indicator, not connected with the battery when the red light green light lit, charging when the red light, green light and full auto stop    
 
Basic parameters:    
- Input voltage: 18V solar panels    
- Output voltage: 2-4 series lithium battery or lithium iron phosphate battery (can be adjusted by an external resistor) take please inform the output voltage    
- Output current: 3A    
- Connection mode: welding plate    
- IN+ input positive,    
- IN- input negative    
- BAT+ battery positive,    
- BAT- battery negative    
- Size: 30*50mm    

- Adopt imported frequency low conduction resistance of double MOS tube,    
- High current diode,    
- High performance flat power inductor,    
- Constantan current sense resistor.    

- Adjusting the output voltage adjustable resistor    
- For 2-4 series lithium battery or lithium iron phosphate battery    
- Lithium battery 4.2*2 string =8.4V    
- Lithium battery 4.2V*3 =12.6V / 4.2V*4 series and =16.8V series    
- Iron lithium battery 3.6V*3 =10.8V / 3.6V*4 series and =14.4V series    
- Adjustment, the no-load voltage is lower than the actual charge that ended voltage 0.1V (such as a 4.2V*3 string =12.6V is set to 12.5V), because the charging voltage automatically ended higher no-load voltage setting    
- Sumida flat type power inductor    
- Enhanced thermal conductivity silicon film with reverse radiating circuit board    
- And then with aluminum fins on the silica gel plate    

Package included:  
- 1 x Battery Charger Board