I've just had this experience today.
I have an AT&T Pre3 running the stock kernel. I have installed PreWare and turned e-mail accounts to manual.
Patches installed are:
-Govnah, [currently reporting Palm Default, 122.88Mhz, 29C,-81mA,8.28/8.21/8.12, 364/10MB]
although whilst I have been typing this message the CPU Frequency graph shows I have been running at 1.4016Ghz about 50% of the time without me touching the phone. Every time I look at Govnah it seems to settle back down to 122.88Mhz.
-Clock sync (set to every 6 hours)
-EOM Overlord monitoring,
-Quiet powerd messages,
-Removed drop packet logging,
-Unthrottle download manager,
-Wifi Fix for Pre3-224
I had rubbish battery life, about 5 hours of decent use. Then I loaded my profile onto a Veer, then when I decided to go back to my Pre3, re-loaded my WebOS profile back to this phone and for some reason the battery life has been much better since.
I was going on a long train journey today and being in contact for texts and calls was more important to me than data. I couldn't see how to turn off all data and 3G (maybe I am being thick) so I installed:
"GSM 3G GPS and Brightness in Device Menu" from PreWare.
I turned off data and left it at "2G-" status and GPS off. Whilst I was waiting for my train I left the Pre3 connected to the car via the proper Palm car kit. I checked the battery every so often whilst listening to the radio and it charged from 81% to 90% then for the last 25 mins kept flicking between 91% and back down to 90%, even when idle with the screen off for almost 10 mins in the middle. Odd but nothing I could do about it.
I completed the first leg of my journey and saw something really interesting so I took a picture, turned data back on and connected to FaceBook. I checked in at the station and posted the picture, then I turned off data & GPS again. Battery was down to 85%.
Got where I was going, so I sent a dozen texts, forwarding and editing them slightly for each recipient, so working the phone quite hard. Suddenly it gave me the low battery warning. I thought it was odd so I turned it off and on again. It gave me the empty battery logo. I had an emergency battery charger on me so I hooked that up and turned it on again. It came on showing 0%. I disconnected the emergency charger and the phone stayed on at 0% (still at "2G-" status) for the next 4.5 hours until I got home! On the Touchstone it went and it took ages to get from 0% up to 14% (about an hour), then the next time I checked it, it was at 100%.
I hope this background, as detailed as I could make it, helps someone work out the cause.
I have a couple of questions if anyone can help....
1) Is there a problem with the "GSM 3G GPS and Brightness in Device Menu" patch? I am reluctant to remove it unless someone can tell me how to turn off 3G etc...
2) Would you recommend any other patches, or removing any of the ones I have?