iPods and iPhones are know for their inbuilt battery, that is non removable. Installing / replacing a battery is a speacialist task and done at service centers only. But new EU laws that are is place to check the toxic content from these batteries when discarded, pose a threat to Apple’s design. Even the popular Macbook AIR has a non removable battery.
Though being environment friendly Apple already offers free recycling for its iPod and iPhone products.