20,100mAh Lithium-Ion Battery Charges Your Mobile Devices without an AC Power Outlet No more frantic searching for an outlet when your mobile device's battery power is getting low. Small and lightweight, this high-capacity power bank dishes out 20,100mAh of battery capacity for charging up to three mobile devices at the same time, including smartphones, tablets, e-readers and handheld gaming devices. Lithium-ion lasts longer than lead-acid batteries and save you money in the end. The UPB-20K0-2U1C is compatible with Android, Apple and Windows devices. 3 USB Ports Allow You to Keep Your Phone and Other Essential Devices Ready for Use Dual USB-A ports provide 5V 2.4A (12W) of total power per port. The ports are BC 1.2-compliant with 1.5A of fast-charging power for Apple devices. The USB-C port supports PD charging up to 5V 3A (15W), 9V 3A (27W), 12V 3A (36W), 15V 3A (45W) and 20V 2.25A (45W). All three ports provide a maximum of 57W of charging power simultaneously. Protects Your Expensive Devices During Charging Comprehensive safety features ensure worry-free charging of mobile devices. The power bank provides short circuit, overvoltage, overcurrent, overcharge and overdischarge protection. Easy to Recharge for the Next Time You Leave Home A lithium-ion battery with 20,100mAh of capacity provides charging at maximum power draw for hours, making your devices ready when you need them. Status LEDs let you know how much battery capacity is left. When it's time to charge the internal battery, use the included USB-C cable to connect the power bank's USB-C port to a USB-C port on a computer or wall charger. USB-IF Certification Ensures Rigorous Testing and Top-of-the-Line Performance This power bank meets the high standards of USB-IF (USB Implementers Forum, Inc.), a non-profit organization consisting of companies that developed the USB specification. Receiving USB-IF certification means the UPB-20K0-2U1C meets the industry's highest environmental, mechanical and electrical standards. It operates with your USB devices, adapters and cables with top efficiency and safety. Compact Housing Packs in a Pocket for On-the-Go Charging An ideal power solution when you're on the road or stuck somewhere without convenient electricity, the portable battery charger weighs less than one pound. It fits comfortably in your purse, pocket or backpack to keep your phone, tablet, e-reader, MP3 player, digital camera or other handheld device operating when you need it.