Dear Bill,
I understand you inquiry about the device and wanting an extended battery for the device. I am happy to provide information about the inquiry about the device and accessories for the device. I believe that reason the incredible got the extended battery and cover was because a different company manufactures cdma devices for HTC kind of like an affiliate company and they were the ones who provide the extended battery to the customers along with the battery cover. I know that other companies like Seidio provide extended batteries for the device that do not require a different battery cover.
To send a reply to this message or let me know I have successfully answered your question log in to our
ContactUs site using your email address and your ticket number 10USCW34ENA001276.
Sincerely,
Robert
HTC