Hubby bought me a Kensington Power pack to use with my USB passthrough a week or so ago. It works great, and can hold a charge for 2 days.  Unfortunately, I just realized that my ecig being connect to the power pack produces a much harsher throat hit.  I can barely take a hit off it without choking.   Decided to try a regular ecig charged by the charger, and I can smoke it fine. Anyone else have this problem?  It sucks because I love that power pack!