A quick look through the user manual doesn’t say that it will charge your device. I have the CQ-20B, but as I don’t have a device plugged into the USB port I haven’t noticed if it charges or not. I will take a look this evening for you and will report back.
That’s normal – USB-B ports do not provide power.
To charge your device while connected to the USB-B port, you would need to use a dongle of some sort with an external supply connected.