12V Charge Management 18V Solar 3 Series Lithium Battery Charger MPPT Solar Controller CN3722

$5.64
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Description
Product Description

12V Charge Management 18V Solar 3 Series Lithium Battery Charger MPPT Solar Controller CN3722

Specifications:

 

Basic parameters:
Input voltage: nominal solar panel around 18V (no load solar panel around 21V)
Output voltage: nominal 12V (10.8 11.1V) full stop voltage 12.6V lithium battery 3 string lithium battery charge management
Output current: maximum constant current 3A (charge current greater than 2A, please add heat)
Wiring method: pad
IN+ input positive pole, IN- input negative pole (SOLAR)
BAT+ battery positive, BA- battery negative
Size: 31*45mm

 

MPPT technology --- solar maximum power tracking

 

Nominal 12V (10.8V 11.1V) full lithium battery with a stop voltage of 12.6V
3 string lithium battery charging management board
3A high current smart trickle, constant current, constant voltage charging management board

 

The price does not include a heat sink, and the heat sink needs to add 3 yuan (the charging current is less than 2A and no heat is needed)

 

Solar cell maximum power point tracking (MPPT)

 

Solar cell maximum power point tracking (MPPT) is to ensure that when the light intensity changes, the photovoltaic cell always outputs the maximum power to make full use of solar energy. Under normal circumstances, it is necessary to use a switch-mode DC-DC converter to achieve the MPPT function, to maintain the maximum output voltage and charging current product (output power),

 

CN3722 adopts the switch buck mode DC-DC conversion method to realize the maximum power point tracking function of photovoltaic cells. Its input voltage can reach up to 28V, which is very suitable for applications where the difference between the input voltage and the battery voltage is relatively large.

 

Charging management board features:
1. High-end technology MPPT solar maximum power tracking charging management chip, with trickle, constant current, constant voltage charging management
2. Adopt imported high-frequency low-conduction internal resistance double MOS tube, high current diode, high-efficiency flat high-power inductor, alloy current detection resistance
3. Super large aluminum heat sink at the bottom to ensure stable operation for a long time at high current
4. High-speed and efficient charging method
5. Dual status indicator, the red light flashes green when the battery is not connected, and the red light is on when charging, and the green light is on when it is fully stopped.