I will apologize in advance if you already knew this but I had no idea that my BlackBerry battery had a 1 year warranty . I mentioned this to a couple friends and they had no clue either though Bla1ze did tell me that Rogers in Canada does honor battery warranties.
Over the years I have sent in a few of my BlackBerrys to T-Mobile and then AT&T for warranty replacement and every time they told me the same thing. The battery and battery cover were not covered by the warranty replacement and I should remove them before I send the device in. I always assumed this was true because most laptop manufacturers only provide a 90 day warranty on their batteries.
Turns out that according to RIM’s website all BlackBerrys with batteries sold in the US (PDF) have a 1 year warranty on the device AND the battery. You can find the warranty period for your country by finding it on this list on RIM’s website. If you have the battery repaired or replaced they extend your warranty another 91 if the 1 year ends earlier. The warranty for the US clearly states that:
Any repair or replacement pursuant to this limited warranty could be requested by You from the RIM Solution Provider. (Your carrier)
The warranty does not cover “normal wear and tear, normal degradation of the battery” or if it was misused or mistreated. Still I have had batteries go bad on me in less than a year and I could have really used a new one…
Let me know if you have any luck replacing your defunct BlackBerry battery!