CN3791 12V MPPT Solar Lipo Charger Module

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$ 1.89
Specifications: Input voltage: select the corresponding module according to the nominal voltage of the solar panel (6V/9V/12V) Output voltage: nominal 3.7V full charge voltage 4.2V lithium battery Interface:  2-pin JST connectors (or PH2.0) Max Charging current: 2A PWM switching frequency: 300KHz Charging voltage: 4.2V ± 1% Working environment temperature: -40 ° C to 85 ° C