I received my 512MB iPod Shuffle one year ago this coming weekend. I decided to do a battery test, to see how it was fairing. I figured it would be down to 8-10 hours. I started the test at 6:55am, and it is now 8:32pm. That is almost 14 hours later, and the shuffle is still playing away. Isn't that amazing? 1 year old, and it is getting 2 extra hours, over the stated specifications. Quite impressive.