The powerful Silicon Power QS15 power bank is compatible with all devices that can be charged via USB. The 20,000 mAh capacity provides 4-6 full charge cycles in almost any smartphone. The QS15 is equipped with two USB and one USB-C output sockets, which allow you to charge three devices at the same time, and one microUSB and USB-C socket, through which you can charge the battery bank itself. Silicon Power battery banks are distinguished by a type C input. The choice of two inputs means greater convenience. Furthermore, it is sustainable as the use of Type-C ports on devices is on the rise. SmartFOCUS advanced calibration technology stabilizes voltage currents throughout the charging process to maintain maximum charging power. SmartSENSEs intuitive and universally compatible charging technology maximizes charging speed and automatic pairing with almost any device. SmartSHIELD provides comprehensive 12-point security protection. With a simple push of a button, the indicator provides information about the remaining battery level and also wakes up Apple iPhone and iPad devices.