Item Type: Solar Charging Module <br>Material: PCB <br>Input Voltage: Select the corresponding 12V module based on the nominal voltage of the solar panel. <br>Output Voltage: 3.7V nominal, 4.2V full stop voltage, for single series lithium battery charging management. <br>Interface: 2Pin PH2.0/JST <br>Features: <br>1. Maximum power point tracking function of solar panels. <br>2. Complete charging management for a single lithium battery. <br>3. Charging current up to 2A. <br>4. PWM Switching Frequency: 300KHz. <br>5. Constant Voltage Charging Voltage: 4.2V ± 1%. <br>6. The constant current charging current is set by an external resistor. <br>7. Trickle charging of deeply discharged batteries. <br>8. Automatic recharge function. <br>9. Indication of charging status and charging end status.<br>1、Solar Charging: This MPPT solar charger board allows you to transfer the power from solar panels or other photovoltaic devices to rechargeable batteries. <br>2、Convenient to Use: Insert the solar panel into one side of the solar charger, and then insert the battery into the other side to start charging. <br>3、Better Management: Equipped with maximum power point tracking function for solar panels, providing complete charging management for single lithium batteries. <br>4、Stable Operation: The constant current charging current is set by an external resistor. Trickle charging of deep discharge batteries. Automatic charging function. <br>5、The Parameter: Charging current up to 2A. 300KHz PWM switching frequency. Constant voltage charging voltage of 4.2V ± 1%.1 x <br> <br>Solar Charging Module<p>2 x Connecting Cable</p>