[quote name='kevlar51']Where is a limited one year warranty for controllers documented? I was just having a discussion with someone in another forum who said if your battery goes, all you have to do is call sony and they'll send you a new one. He never responded when asked for a source, and the only one I could find was an old interview (pre-PS3 launch) where a Sony exec said they'd replace the batteries forever. But in reading up on warranties, I was under the impression that the controller is covered under Sony's 90-day peripheral warranty (which is certainly the worst of the 90-day/1-year/lifetime options).[/QUOTE]
I believe I found the warranty info regarding the batteries NOT being covered by the limited one year warranty on Sony's site.
Unfortunately, the battery seems like it'd be the most prone to failure component of any controller(aside from the sticks).