the usb is on the bottom and I am tired of removing tank/atty and laying it down to charge...I bought an mp3/ipod charging dock from the dollar store (NOT the apple plug one) and a usb cord (total cost $2.00)..I took it apart and installed the new plug (u have to use a tool to enlarge the hole..I used needle nosed pliers, but keep it a tight fit so it doesn't move)...measure your device height wise with cord so it will stand freely...snap it back together and plug into pc or get a wall wart for usb...I have a charge table set up so I made a couple and plug into a power strip...you can get the dock and cords in the same color for those that like to color coordinate...like me..lol...Works for istick 20/30w, mvp 20/30w, istick 40 TC, Sig 40w TC, and some others..like my smowell flavor tester...just make sure you position the cord the right way (rear or front facing ) before assembling ...you could probably modify for any bottom rechargeable device...just thought I'd share.....
