Qi wireless charging isn't by default bidirectional but yes more things are moving that way so you could, on supporting devices, in theory have them powered by

Qi wireless charging isn't by default bidirectional but yes more things are moving that way so you could, on supporting devices, in theory have them powered by a Qi pad only for the duration of the refresh. The only issues I can think of there are I'm not sure if the Qi process can start up without power on the receiving end, the source device isn't always broadcasting power afaik so I don't know what the trigger is and if it requires some communication with the receiver device. The last is the NFC has a pitiful data rate of ~424 kbits/s but if we're powering it through Qi we can use more power hungry transfer methods to speed it up.