1A 4.2V 3.7V 18650 Lipo Li-ion Lithium Battery Charger MPPT Solar Charge Controller Module (Pinless)

Features:1.Lithium battery charger for solar systems.
2.DC 4.4-6V input voltage, DC 4.2V charging output voltage.
3.The maximum charging current/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 stage.
6.Constant current/constant voltage operation with thermal regulation maximizes the charging rate without the risk of overheating.
7. Automatic low-power sleep mode when the input power voltage is removed.
8.C/10 charging termination.
9.Automatic recharging.
10.Battery overvoltage protection.
Specification:Item Type: Lithium Battery Solar Charging Module
LED Indicator: "CR" LED indicates charging status; "OK" LED indicates fully charged or constant voltage mode.
Dimensions: 18 x 10.16 x 2.7 mm
Options: With pin, without pin
Weight: 0.9 g (with pin), 0.6 g (without pin)
Instructions:
The module's adaptive unit 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 lithium-ion or lithium polymer batteries with an input power supply 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 x solar charging module