Originally Posted by Harry2
The phone/tablet limits the amount of amperage needed.
So the charger's ability of amperage could be bigger than the phone's/tablet's needing, but should not less.
Using a higher voltage than the 5V standard USB voltage can destroy an USB device ... and not the charger's ability to supply a higher amperage at request.
So here's part of the description from the Mophie power station.
" 500 mAh, 1- and 2.1-amp power options
To meet your charging needs. The special high-out design allows for swift charging."
So I believe the powerstation is able to detect the amperage needed to charge the One?