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.
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.