[cruise350]

If you put the card into your PC can you right click on it and select properties. Then have it repair the disc or scandisc. This happened because your phone must have had an error when writing to the card and then when you pulled the battery it was the same as if you pulled a thumb drive out of the usb slot when it was being written to. If Windows sees it enough to ask to format the disc you may be able to scandisc it, but if not its format time and lost data.