Please charge the device to full power before use.- YouTube Video Foomee AA50 Youtube Video Click to View We Recommend Using It With A Foomee Fast Charger, Click to viewEquipped with a high-density 50000mAh battery, this power bank supports 22.5W super-fast charging for quick device refueling, Features 5 output ports including a 22.5W high-speed USB port and multiple standard USB ports, allowing you to charge up to 5 devices at once, built-in large digital display shows real-time battery percentage clearly. The 4-level adjustable LED flashlight serves as a reliable light source in the dark, Three input ports, up to 22.5W Type-C fast charging. Compatible with iPhone, Samsung, tablets, and other devices.