• Lithium Battery Charging Circuit with 5V 1A TP4056 Protection Circuit In line with your need, you can buy from our advertisements listed as 5 and 10 among our advertisements. The battery charging circuit has a micro USB port. Compatible with new generation devices. It is a convenient,small size and economical product that can charge Lithium batteries with the micro USB port located adjacent to it. It can be charged by connecting 3.7V batteries to the battery ports indicated by bat- and BAT+ on the bottom of the card. We recommend using one battery for charging. TECHNICAL SPECIFICATIONS Charging Mode : Linear Charging Current : 1A Input Voltage : 4.5V - 5.5V Input Interface : Micro USB Card Dimensions : 25x19x10mm DESCRIPTION There is a micro USB connector on the product. Power input can be provided through this connection or any 5V source can be supplied through the IN+ and IN-pins on the board. It can be charged by connecting 3.7V batteries to the battery ports indicated by bat- and BAT+ on the bottom of the card. The products have been tested ex-factory. Package Includes: 5 x Tp4056 Battery Charge Protection Circuits