Qi-infinity 50000mAH Extra Pro External Battery Charger for Apple MacBook, MacBook Pro, MacBook Air, USB QC Charger for Apple New MacBook 12 iPad iPhone 6 6S Plus 5S 5C 5 4 Samsung HTC & More Exclusive lizone QC technology: detects your device to deliver its fastest possible charge speed up to 6.6 amps High capacity: charge MacBook pro 13-inch approach 2.5 times, MacBook pro 15-inch 2.0 times, MacBook pro 17-inch 1.5 times Incredibly compact: standard size (9  4.6  0.8 inch, 25oz ) it fits perfectly in your pocket Qi-infinity technology enables full speed laptop DC port (up to 4.5A, 90W) and USB port charge (up to 2.1A) and universal compatibility. Fast charging for multiple devices simultaneously with the 6.6A total output. Broadly compatible with both USB charging port and a DC Output laptop port, charge a wider range of tech devices. With dc and USB port for laptops or smartphones