I know this won't stop the electrical pulse being noticed, but since I got the iStick 20W I have been keeping a piece of scotch tape over the mini USB port as a preventative to keep the dang FL sand out. With my luck I'd put it down and somehow fill that tiny port with sand and not be able to remove it. Covering that port as someone else mentioned would most likely stop the shocking feeling, but it would not solve the root of the problem.
Wonder if I might ask this question which I am sure has already been asked -- I just couldn't find it...... What happens when the batteries in the "sticks" give up the ghost eventually? Are these devices considered to be "throw away"? I'd hate to just junk it because the battery died but on the other hand don't think sending it back to China or even somewhere in the States would be very cost effective. Has anyone been able to take one apart without destroying it? Are these batteries a different "breed" of 18650's? I have bought several of these devices in different colors and watts and I look at them wondering "what's gonna happen?"..... TIA