The iPod Touch 5th Generation 16 GB retains the battery performance as the 32 GB and 64 GB models. The battery is optimized to provide up to 40 hours of music and 8 hours of video when fully charged.
Sneaky, sneaky Apple. Thought you could pull a fast one on us by releasing a new stripped down version of the current iPod Touch 5th Generation? Not on our watch. We've got one, and we're going in!
"The exclusion of two main components has earned the iPod Touch 5th Generation 16 GB a new model number from its 32 and 64 GB brothers: A1509."