I will be taking the train down to West Palm Beach, Florida in a few weeks to visit my Aunt, Grandmom, and half-sister. Obviously my step-brother and I will be bringing our iTouches for the 24-hour ride. Since there are no computers on the train to charge our iTouch's to if need be, but there are outlets, I decided it might be a good idea to get a USB/AC charger so that my step-brother and I could charge our iTouches at the same time while on the train and despite having no access to USB ports. The thing I'm worrying about is that as I was reading reviews for this product, I heard some people complaining about the device not being able to support the iTouch's "output voltage". I have no idea what that is all about, but I just want someone to tell me if this device will properly charge an iPod Touch of any size/gen? Here is the product I'm looking at: http://www.walmart.com/ip/Music-Power-Duet-USB-AC-Charger-for-iPod-and-MP3-Players/5750794 Thanks.