Yes, all of our products are certified and will have the appropriate markings on the products.
Most airlines allow lithium batteries that do not exceed 100W/hours in the carry-on luggage. You can find the product specific information on the outside of the power bank. Also, consult your airlines for specific information about your flight and travel locations as there may be different regulations between airlines.
USB- PD enables compatible devices to charge at higher voltages and supports bi-directional charging and data transfer from both host and peripheral. Charge your USB-C phone at 5V 3A and your MacBook with the same cable and PD compatible charger. Get more detailed information from our Power Delivery blog post. (https://www.aukey.com/usb_power_delivery)