Casey and Van Neistat, who happen to be brothers, are using an anti-advertising campaign on the internet to let people know that the unreplaceable battery in Apple's iPod only lasts 18 months. They have written this on NYC iPod posters.
The brothers say it costs $255 to fix this. For this price one could buy a new iPod. However, in the last two weeks Apple unveiled a service where people pay $106 to get a new battery, postage included. 3rd party kits exist for $49.
One must dismantle the iPod to replace a battery and some find it tricky. Apple offers information on the replacement process at http://news.com.com/ Source