5V 1A Micro USB 18650 Lithium Battery Charging Board Charger Module + Protection Dual Functions TP4056.
This is a miniature battery charger based on the TP4056 integrated circuit. It is ideal for adding an embedded battery charger to your new project.
Charge Li-Ion batteries from onboard Micro USB connector from USB or external +5V source.
With Micro-USB on board connector, you can directly connect to computer USB port for battery charging. If USB is not available you can use an external source voltage at IN+/IN- pads great for DIY projects
Input Voltage: DC5V
Charging Cut-off Voltage: 4.2V±1%
Maximum Charging Current: 1A
Battery Over Discharge Protection Voltage: DC2.5V
Battery Over Current Protection Current: 3A
Board Size: 26 X 17mm/1.02 “X 0.67”(L*W)