TP4056 current-protected module allows you to charge rechargeable single-cell lithium batteries with constant current and constant voltage.

There is support for charging between Dec 100mA and 1000mA. The adapter to be used for charging should be no more than 5V. 

There are 2 LEDs in the manager indicating that the battery is charged and the charging is completed. 

When your battery is full, it automatically cuts off the current and provides protection.

NOTE: You should pay attention to the plus (+) and minus (-) in the Input and Output connections, if you connect it in reverse, the module will light up and become unusable.

Module Features:

• TP4056 lithium charger integrated circuit.
• Charging method: Linear charging
• Mini-USB port
• External input supply pads (IN+ and IN-)
• Input voltage: 5V
• Charging voltage: 4.2V 
• Working temperature : -10'C-85'C 
• The charging current is 1000mA (can be changed from 100-1000 mAh by resistor Decoupling. )
• Charging accuracy: 1.5% 
• Red LED : Charging continues.
• Green LED : Charging refill is completed.
• Reverse connection : No