Samsung Galaxy Stratosphere II
Back for the extended battery
I got an extended battery and the back from a seller on eBay. I'm very satisfied with the extended battery, but the back was a somewhat poor fit when I got it three months ago and has just gotten looser and looser.
Now that back will come loose and fall off pretty easily unless I put a rubberband around the phone.
The eBay seller where I got the battery and back is in the US, but the back is certainly typical Chinese export workmanship (or lack thereof).