A:AnswerThe portable charger comes with a usb charging cord that you plug into a socket and will have a colored light to show you when it is fully charged
A:AnswerFirgure a phone ranges 1900-3200 mAh and this is a 10400 mAh so you’d get about 3-5 charges. Depending what your phone battery is.
And go pros are around 1060-1140 mAh so you get about 8-9 charges.
Again depends on the size of the batteries
A:AnswerNot sure on the outage but it charged my dead iPad mini at a normal slow pace, with out any touching or anything. It’s not quick charge equipped.