Charging time depends on various factors such as input source and cables. The product will charge any USB chargeable device (including phones) at the maximum speed that the device’s manufacturer has allowed for in the device configuration.
Yes, all of our products are certified and will have the appropriate markings on the products.
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.