Yesterday, the Energi To Go for iPod was revealed by Energizer, and this device is as simple as possible. While I was thinking about an additional power cell, before reading the whole mumbo-jumbo, things are not as I expected, because Energizer's Energi To Go uses two AA batteries, to give you over 40 hours of audio playback, or 11 hours of video, but only when used with Energizer's e2 Lithium cells. Obviously, different other batteries will produce better or worse results...The good part of the deal is that you'll also get two Energizer e2 Lithium batteries in the pack, but pricing and availability weren't announced yet. Anyway, one thing is sure - if you're going to CES 2008, you'll see the Energi To Go in action there, so try not to miss it!