Features: Elevates your charging experience with our 18650 Battery Holder, featuring PD and USB C for rapid power delivery and wireless charging capabilities. This DIY Power Sources Case is a game changer with its detachable design, LCD display, and not welding assembly, ensuring a user friendly experience and real time power monitoring. Tip: 18650 batteries are not included in the package, you need to purchase separately. Can only use the 18650 battery of which positive electrode is flat top. Please pay attention to the direction of the positive and negative poles. Specifications: Component:Plastic Number of batteries: 8x18650 batteries Color:Black,White;(Optional) Input Interfaces:USB ; Output Interfaces:Double USB+TYPE C port; Output Power Limit:22.5w Power:27w(Most) USB Output: 5v/3.7a; 9v/2.5a; 12v/1.87a; (Supports 5v Charging and Discharging at the Same Time, MultiPorts Output Only 5v); Type C Output: 5v/3.7a; 9v/2.22a, 12v/1.67a (Only Support Pd Protocol for Output); In Input (USB Port): 5v/3a, 9v/2a, 12v/1.5a; Type C Input: 5v/3a, 9v/2a, 12v/1.5a (Do Not Support MultiPorts Input); Package Includes: 1pc Case (Battery not include) note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.