If you’ve ever watched that little green bar on your iPod and contemplated how much time you had left before you had to find a way to charge your iPod again (being nowhere near a USB cable conveniently hooked up to a PC or laptop, as these things tend to happen), you will definitely appreciate the 55-hour iPod Battery Extender. I know I did on a recent flight to San Antonio!

“This protective case slips easily and snugly over your video iPod and has a built-in high-capacity lithium polymer battery pack designed to extend the playback time of the 60GB i604 player up to 55 hours, 275% more playing time than the standard playback life of a video iPod.

The soft silicon skin provides a firm grip and gentle protection against scratches, and the lightweight protector has a stainless steel base that guards your iPods pin connector while allowing it to be plugged in for recharging without having to remove the cover. The leak-resistant shell resists overcharging, has slots to accommodate USB and headphone connections, and does not interfere with deft control of your iPods functions.”

Check price and availability at Hammacher Schlemmer.