1A 4.2V 3.7V 18650 LiPo Li ion Lithium Battery Charger MPPT Solar Charge Controller Module (with pin).

1. Lithium battery charger for solar power systems. 2. Input voltage: DC 4.4-6V, output voltage: DC 4.2V. 3. Maximum charging/output current is 1A, but you can adjust the current by changing the value of resistor R1. 4. Automatically adjusts the charging current according to the output capacity of the input power supply. 5. Pre-charge setting to restore deeply discharged batteries and minimize heat dissipation during the initial charging phase. 6. Constant current/constant voltage operation with thermal regulation maximizes the charging rate without the risk of overheating. 7. Automatic low-power standby mode when the input power supply is removed. 8. End of charge C/10. 9. Automatic recharging. 10. Battery overvoltage protection.

Specification:

Item type: Solar charging module for lithium battery. LED indicator: The "CR" LED indicates the charging status; the "OK" LED indicates fully charged OR constant voltage mode. Dimensions: 18x10.16x2.7mm. Options: With pin, without pin. Weight: 0.9g (with pin), 0.6g (without pin). Instructions: The adaptive unit on the module can automatically adjust the charging current according to the output capacity of the input power supply, making it ideal for solar power systems or applications that need to charge a lithium-ion or lithium polymer battery with a power supply input that has limited output capacity. If your solar panel is 5V, you can use it directly. Of course, the module can also be powered by a 5V DC power supply.

Package list:

1 solar charging module.