hi I just received my G2350S GPS receiver for my Treo 680. I had a problem that when my phone would be in the unit my blue tooth headphone would continuously turn off. I called Seido tech support and they said to turn beam receive to on. Now everything works fine. I have seen many disconnect problems with blue tooth headsets on this site and thought this could be useful. So if you are having connection problems with your blutooth devices try turning beam receive to on. Unfortunately this probably doesn't help for battery drain. But for me not a problem since I can continiously charge my phone with the G2350S.
Hope this helps someone.