A:AnswerYou do not have control over it as you would a mophie case. This case will use the cases battery before it uses the phones battery, there is no off or on switch.
A:AnswerThe case can charge wirelessly on its own. If you have the phone in the case, and you plug in/place the case on a QI charger - it will charge the phone FIRST then the case SECOND.
It’s fantastic. If you leave the case with the phone in it on a QI charger or plugged in overnight - both will be fully charged by morning.