Solar 3-string lithium battery charging management solar controller MPPTsolar charger

Product Parameter

Input voltage: nominal 18V solar panel (unloaded 21V solar panel)

Output voltage: nominal 12V (10.8 11.1V) full charge cut-off voltage 12.6V lithium battery 3 series lithium battery charging management

Output current: Maximum constant current of 3A (if the charging current is greater than 2A, please add heat dissipation)

Wiring method: solder pad

IN+input positive pole, IN - input negative pole (SOLAR)

BAT+battery positive pole, BA - battery negative pole

Product Introduction

Maximum power point tracking (MPPT) of solar cells is to ensure that the photovoltaic cells always output maximum power when the light intensity changes, in order to fully utilize solar energy. In general, a switch mode DC-DC converter is needed to achieve MPPT function and maximize the product of output voltage and charging current (output power). CN3722 uses a switch mode DC-DC converter to achieve the maximum power point tracking function of photovoltaic cells. Its input voltage can reach up to 28V, which is very suitable for applications with large differences between input voltage and battery voltage.

Product Characteristics

1. High end technology MPPT solar maximum power tracking charging management chip, with trickle, constant current, and constant voltage charging management

2. Adopting imported high-frequency low conductivity internal resistance dual MOS tubes, high current diodes, high-efficiency flat high-power inductors, and alloy current detection resistors

3. Large aluminum heat sink at the bottom ensures stable operation for a long time under high current conditions

4. High speed and efficient charging method

5. Dual status indicator light, red light flashes and green light stays on when no battery is connected, red light stays on when charging, and green light stays on when fully charged and stops automatically

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Official Certificate&Certificate

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Warehouse Real Shot

Standard packaging

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