Must be a good question I've been waiting for an answer. I would guess it has to be sent in to have a new one installed, or to a tech unless by then they have a youtube video on how to do it yourself if you dare.
My Bold battery has never needed replacement after two years so I'm not real worried.
My BB curve battery lasted me 4 years before I did an upgrade as the battery and the phone was really beat up. I only hope that when it comes to replacing the PB battery it dosent cost me $199, I might as well get a new PB then
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