The Aukey 30,000mAh USB-C PowerAll Power Bank has a USB-C port with Power Delivery 2.0 that efficiently charges compatible devices at higher voltages and supports bi-directional charging and data transfer. Has the Qualcomm Quick Charge 3.0 which charge compatible devices up to 4 times faster than conventional charging. Supports healthier battery function and faster USB charging speeds due to AiPower Adaptive Charging Technology.