Here’s another iPhone battery backup, the iSound 2-in-1 battery backup.

As well as being able to charge your iPhone it can also charge your iPod as well.

The iSound can provide an extra 30 hours of music, 6 hours of video and up to 3 hours of extra talk time, whilst this isn’t as much as previous models we have seen, it’s pretty good considering the price.

The iSound 2-in-1 iPhone battery backup is available for $39.95 from Xtreme Geek.