Features:A DIY power box, without battery, need 2pcs 21700 rechargeable batteries (Batteries not included) Can also be used as LED flashlight for camping hiking and more,DIY USB power box for cellphones or tablet PC. Compatible For Phone 11 12 13 XS 8 7 6-plus/5S,for phone tablet cellphone USB LED light USB fan and more. DIY Power Box USB output power , Type C Micro-USB Lightning input port ,with LED Flashlight,nice product for outdoor use.Install the anti-batteryIC to immediately protect the motherboard from burning, as long as one battery or two batteries are installed, it can work, anti-reverse connection, safe and reliable: use over-voltage and over-current for protections circuit. Specifications:Item:for 2pcs 21700 Batteries Charging Box Material: ABS-PVCColor: Gray/Yellow/BlueSize: approx 85x53x38MM/3.45x2.08x1.5inInput port: MicroUSB +Type C +Lightning FemaleOutput port: USB FemaleInput: for DC5V/2.1A 20WOutput: for DC5V/2.1A PD22.5W/66WQuantity: 1 PC (Not includes the battery and charging cable) Note:1.Transition: 1cm=10mm=0.39inch2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes:1 X Battery Power Supply Box ( batteries are not included)