It's either the pogo or the usb port. Which ever you plug in first. The kernel detects and controls this. Samething as that you cannot charge your device with the pogo while the USB is plugged into your computer (even though you see the charging icon, it's actually not charging).
I think it would fry it I wouldn't try it besides you would have to have two of the Samsung adaptors since the regular ones really don't seem to put out enough power to do anything and the USB one itself does so much less than the pogo as its that it's already majority speeding up the charge time, possible benefit vs risk I don't see it being worth trying the pogo itself takes about 1/3 of the original time to charge and that's while the tablet is in use the USB would just drain slower when on the charge and in use
Hello Ahmad, I don't believe it would work - rechargeable batteries charge slowly to avoid rapid expansion and cracking in the internal structures so I don't think it would be worth the risk even if it did work. This is the reason these things charge somewhat slowly.
Pogo is so easy. That is its selling point. 2 chargers could be hazardous to both the Nexus and power supplies. Even small differences can cause reverse currents. Side effects may not be pretty. So to answer your ? I do not think it would a good idea. My Nexus 10 using Pogo charged from 12% to 100% in about 4 hrs.
I suppose you could - but the Pogo will fully charge the Nexus in about 30 minutes anyway, so any added effect from the usb would be meaningless. And as the other poster said, you might very well fry it.