Answer- Yes it is but...
Just got the pogo cable on Friday and did some testing over the weekend and have some results and observations.
I ran my N10 down to 10% Saturday and plugged in via the pogo cable at about 11:30pm. . When I checked Battery Monitor Widget the following morning it showed fully charged at 4am. Total time 4.5 hours. Max charging rate was at 1916mA and tapered to 415mA.
Sunday I did the same, (11% and 11:30pm) and used the USB cable. A check of BMW showed the N10 fully charged by 5am. Total time 5.5 hours. Max rate was 1559mA and a taper to 420mA.
So, an hour faster. Not huge, but significant. Overall I think the important thing with the pogo cable is that it will charge as you use it. When I plugged in with it before I turned the screen off I was showing a net charge, while with USB it continued to discharge, albeit slower.
Both of these (admittedly unscientific) tests were done with the OEM charger and USB cable.
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