Provides over ten hours of additional power to iPod
hardware with four AA batteries - more depending on the
player and batteries
you’re using. - Jeremy Horowitz, iLounge
The powerStickis a great solution for MP3 users on the go. The powerStick works with
iPods, Blackberries, iPhone, Zune, and more. The powerStickactually
charges the battery while you listen. The powerStick uses 4 AA
batteries. With a new set of batteries, the powerStick can
completely charge your player 3 to 4 times. And it's all at
a great price, almost half the price of the nearest competing
product.