Features: It is a single-chip solution designing specifically for mobile power adapter, integrating charging management module, discharging management module, power detection and LED indicator module, and protections module. Build in charging and discharging power MOS, can set charging current, charging current and discharging current is both 1Amp. It integrates almost all safety protections functions such as constant temperature charging modes, over temperature protections, over charge and over discharge protections, output overvoltage protections, output over load protections, and output shortcircuit protections. Equipped with indicator light, the charging redness light flashes, the redness light lights up when fully charging, and the blue light flashes when discharged. Equipped with mobile phones charging port and USB output port, users can DIY the charger themselves. Specifications: Material: ABS+Metal Type: Type C, USB(optional) Size: approx. 20mm/0.78inch Package Includes: 10pcs/set Battery Charging Board note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.