This item did not work at all with my Treo 680, although the outside of the box said it would. Inside was a battery marked for the Treo 750. It fit into my 680, but too snugly, sort of had to force it in there. Phone would not work, I thought maybe it neeeded a charge overnight, but still no go.i returned it, and they sent the same packaging and the same (differently marked) item inside. Again, snug. Again, I tried to charge it. I gave up and spent considerably more for a perfectly working battery from Palm.