Battery Charging Module 12V MPPT Solar Panel Controller 3 Series Lithium Li-ion 18650 Battery Charging Module

Complete shop owner independent design and development - can be customized MPPT Technology---Solar Maximum Power Tracking Nominal 12V (10.8V 11.1V) full of junction voltage 12.6V lithium battery 3 string lithium battery charging management board 3A high current intelligent turbulence, constant current, constant voltage charging management board The price does not include the heat sink, and the heat sink is required to add 3 yuan (the charging current is less than 2A without adding heat) Solar cell maximum power point tracking (MPPT) Solar cell maximum power point tracking (MPPT) is to ensure that the photovoltaic cell always outputs maximum power when the light intensity changes to make full use of solar energy. In general, it is necessary to implement the MPPT function with a switch mode DC-DC converter to maximize the product of the output voltage and the charging current (output power). CN3722 adopts switching buck mode DC-DC conversion 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 input voltage and battery voltage are relatively different. Charging management board features: 1. High-end technology MPPT solar maximum power tracking charge management chip with turbulence, constant current, constant voltage charge management 2. Adopt imported high frequency low conduction internal resistance double MOS tube, high current diode, high efficiency flat high power inductor, alloy current detecting resistor 3. The bottom of the large aluminum heat sink ensures long-term stable operation at high currents. 4. High speed and efficient charging method 5. Dual status indicator light, the red light flashes green when the battery is not connected, the red light is on when charging, the self-stop is full and the green light is on. Basic parameters: Input voltage: nominal 18V solar panel (no load 21V solar panel) Output voltage: nominal 12V (10.8 11.1V) full of junction voltage 12.6V lithium battery 3 string lithium battery charge management Output current: maximum constant current 3A (charge current is greater than 2A, please add heat) Wiring method: pad IN+ input positive, IN- input negative (SOLAR) BAT+ battery positive, BA- battery negative Size: 31*45mm