The iPod Battery is a rechargeable lithium ion battery pack that can be charged for over 400 times and at 40 hours per charge, that’s 16,000 hours of run time from The iPod Battery (battery charger included).
Designed for all 3rd generation iPodTM and iPodTM Mini users. The iPod Battery comes with interchangeable cradles for the 3rd generation iPod and iPod mini and will provide up to 40 hours of music play-time or download time, regardless of the age or status of the original (internal) battery. The battery does NOT charge the internal iPod battery. The power will by-pass the internal battery and goes straight to the unit. This is the perfect solution for travel, long commutes, or if it’s going to be a long time between charging access. The iPod Battery can also enable the iPodTM to a speaker system. Fewer wires will be needed while battery is charged. The iPod Battery retails for US$99.99.
– Compatible with 3rd generation iPod & iPod mini
– Up to 40 hours of run-time per charge (battery charger included)
– On/Off switch to conserve power
– Belt clip attachment (can attach iPod to airplane magazine holder on seat)
– One Year Warranty
More info and images here.