I have received it today and it is ****ing awesome.. was really surprised with quality, small size and fast charging
I just got one as well. But I found that it charged my one X not really that fast. About the speed just a little bit quicker than the USB mode when connected to the PC. I used the Current Widget as a reference. I know it is not really accurate, but by comparing the values using the Wall plug, PC and the external battery, we can get some idea of the charging rate.
The results are obtained 1 min after charging cable was plugged in.
Connected to wall plug (AC mode) 710 ma
Connected to the battery (AC mode) 560 ma
Connected to the PC (USB mode) 150 ma
Also, I got 1.5 time of charging the One X up (from 0% to 100%). So do you got similar results?