I remember reading in the 'What Did You Get in the Mail Today' thread where (either) GatorMedic or CatherineM got a nice battery back up in the mail. It was a cell phone-sized device that would charge your device on the go. I've looked at what Duracell has to offer, and I am interested, but what I mentioned above was not a Duracell. I don't remember the brand name of it. That's why I'm writing this. I had the impression that the device in question was of the highest quality. I would like to know what that device was, but I would also like to know what the 'best' out there is. Any suggestions?