Yes, all of our products are certified and have the appropriate markings.
For those power banks with a power button, you must press the power button first to turn on the power bank. There are a few AUKEY power banks that do not have a power button that will begin charging as soon as it is plugged into the device.
USB Power Delivery (PD) is a universal charging standard that enables compatible devices to charge at much higher power than normal. The technology supports bi-directional charging and data transfer from both host and peripheral. Fast charge your Pixel 3 or iPhone, and then use the same charger to power your MacBook. Get more detailed information from this blog post.
Engineered to refuel devices up to four timesfaster than conventional charging. Powered by INOV (Intelligent Negotiation for Optimum Voltage) Technology for fine-tuned power output & more optimized charging cycles. Up to 45% more efficient than Quick Charge 2.0 & compatible with a full range of USB connection types, from A to C.