BACK UP your Treo 650 software and data BEFORE doing the following.
1. RESET the Treo 650 back to default set by holding power buttom following by reset the treo.
2. There is a way to reset the voltage regulator in the Treo ; believe
is by holding the RESET for > 3 seconds. Believe need to take out
the battery in out during this process. Can't recalled the correct
steps. This could could reset the Treo's power regulator.
3. TRY reinstall your palm software with minimun software or 3rd
parties one, this software could be running in the back ground which
drain the battery.
Try above steps might help.
Mine also got the same problem last two weeks, my treo could felt there
is kind warm sensation if it took out from my waist pouch after leaving
it for sometime on the table. BTW, the battery could felt quite warm
If yours also behave the same which I believed the Treo got some kind
of contact problem which draw more power then usually does.
Now, mine got no more warm sensetion after carry out above steps. It
gets better as Compared to last two weeks ago BUT not that good as
compared previously when it can last 3~4 days after a full charge.