http://www.seidioonline.com/index.as...ROD&ProdID=814
I purchased the seidioonline extended battery. Fits in the OEM sized case with the original back and provides a little extra juice to get through the day. With moderate use I can last 2 days on a charge and with a lot of use I still make it through the day. The extra 10% may not be a lot, but it is worth the difference especially due to the fact that the phone looks and operates the same.
Best addon for the phone that I have purchased yet.