Anker Power Bank, Charger (PowerCore Essential 20K) 20000mAh Battery Pack with High-Speed PowerIQ Technology and USB-C (Input Only) for iPhone, Samsung Galaxy, and More About this item Ultra-High Capacity: The massive 20, 000mAh capacity provides more than 5 charges for iPhone XS, almost 5 full charges for Samsung Galaxy S10, more than 4 charges for iPhone 11, and over 2 and a half charges for iPad mini 5. Advanced Charging Technology: Anker's exclusive PowerIQ and VoltageBoost technology combine to deliver an optimized charge to your devices, while the trickle-charging mode is the best way to charge low-power accessories. Simultaneous Charging: Twin USB ports allow you to charge two devices at the same time. The USB C port cannot charge other devices. Versatile Recharging: With both a USB-C and Micro USB input port, you have more options over how you recharge. Recharging PowerCore with a 10W charger will take approximately 10. 5 hours, while recharging with a 5W charger will take approximately 20 hours.