Macally External Li-ion battery for iPod

Summary
This external battery connects to your iPod via the USB cable that connects to the computer. While connected to the iPod, the battery acts as a power source - it will charge your iPod whether in use or not in use.

When you’re on a long journey and can’t charge your iPod, this lightweight battery is ideal! It also comes with a handy storage pouch and doesn’t require batteries, so it’s a practical and cost-effective. What’s even better is that you can use it for any type of iPod, as well as phones and other MP3 players - in fact, anything that charges through USB!

Manufacturer’s Description
Macally External Li-ion Battery adds plenty of hours of play time to your iPod device(s), as well as prolongs the life of other portable devices wherever you go.