I didn't say
impossible, I said
almost impossible without damage and for the iPod models with aluminum faceplates I stand by that. Of course, there are those who don't mind that the faceplate no longer
quite fits, and if you're desperate for a new battery, go for it. But anyone contemplating opening a 6th or 7th gen Classic should
watch this and
this.
I've changed the battery in my 4th gen iPod Photo 4 times now, the first 3 times without incident. The 4th gens have a plastic faceplate and are surely among the easiest iPods to open. Alas, while opening it for the 4th battery swap, one of the rails which is tack-welded to the metal back popped off, making it literally impossible to get the back off without damage. To quote Forrest Gump, "It" happens. A not-too-bad used back fixed the problem.