You have to connect it to your Android phone/tablet through Bluetooth and then open the FiiO control app.I own a q5s with micro USB port
It is possible to connect it to a transport (such as fiio M5 and hiby r2) without charging the q5s.
Cause i have too much battery drain.
From the menu you can set charge to off.
If I am not mistaken the Q5s micro USB port is compatible with this action.