Specification Product Name Type C Charge Discharge Driver Circuit BoardInput Voltage 3 7V 4 2V compatible with one lithium ion battery Charging Port Type C interfaceDriver Power Suitable for use with 10W LED beadsDimensions 17 5mm x 17 5mm 0 69in x 0 69in Features 1 Type C charging interface provides streamlined compatibility with a wide range of charging devices 2 The circuit board simplifies the internal structure of flashlights with integrated discharge management 3 Compatible with 18650 and 21700 lithium ion batteries allowing customization based on capacity needs 4 High efficiency driver chip design reduces power loss and heat generation enhancing flashlight performance 5 Clear soldering points and straightforward wiring instructions make it accessible for flashlight DIY enthusiasts 6 Compact and lightweight design ensures easy integration into flashlight builds Package Includes 1 x Type C Driver Circuit Board