【Improve The Charging Rate】The lithium battery solar charging module has a constant current/constant voltage operation with thermal regulation function, which can maximize the charging rate without the risk of overheating 【Application】The adaptive unit on the module can automatically adjust the charging current according to the output capacity of the input power supply, so SD05CRMA is very suitable for solar power systems or applications that need to charge lithium ion batteries or lithium polymer batteries 【Reduce Heat Release】The solar charge controller module has a pre-charge adjustment function, which is used to restore the deeply discharged battery in the initial stage of charging and minimize heat dissipation 【Use Parameters】Solar panel dedicated charging module charging module power supply voltage DC 4.4-6V, charging output voltage DC 4.2V, the maximum charging current / output current is 1A, but you can change the current by changing the value of R1 resistance 【Automatic Adjustment】The battery charger module automatically adjusts the charging current according to the output capacity of the input power supply, when the input power supply voltage is removed, it automatically adjusts to a low-power sleep mode Features:
1. Lithium battery charger for solar powered system
2. Power supply voltage DC 4.4-6V, charging output voltage DC 4.2V
3. Maximum charging current/output current is 1A, but you can change the current by changing the value of the R1 resistor
4. Automatically adjust the charging current according to the output capacity of the input power supply
5. Precharge adjustment for restoring deep discharge batteries and minimize heat dissipation at the initial charging stage
6. Constant current/constant voltage operation with thermal regulation maximizes charging rate without overheating risk
7. Automatic low power sleep mode when the input power voltage is removed
8. C/10 charge termination
9. Automatic recharge
10. Battery overvoltage protection

Specification:
Item Type: Lithium Battery Solar Charge Module
LED Indicator: ''CR'' LED is charge status indicator; ''OK'' LED is fully charged OR constant voltage mode
Dimension: 18x10.16x2.7mm 
Options: with Pin, without Pin
Weight: 0.9g(with Pin), 0.6g(without Pin)
Instruction:
The adaptive unit on the module can adjust charging current automatically based on the output capability of input power supply, so it is ideal for the solar-powered systems, or the applications that need to charge lithium-ion battery or lithium polymer battery with an input power supply whose output capability is limited.
If your solar panel is 5V, then you can use it directly. Of course, the module can also be powered by a 5V DC power supply.

Package List:
1 x Solar Charge Module