Yes, all of our products are certified and will have the appropriate markings on the products.
Capacity is measured in milliamperes (mAh) on power banks. As a general rule, the more mAh in the power bank, the more times you will be able to charge your device before having to charge the power bank again.
AUKEY AiPower enabled USB ports provide the safest maximum charging speed for all your different devices for a healthier battery function. The green color identifies the AiPower ports on your AUKEY products.