Pre 2 battery life

Here's my thread about the Pre 2 battery life.
If you have a Pre 2, please post your thoughts/results.  
Upon getting my Pre 2 the first issue I noticed was battery life. After only an hour or two of intermittent use I was down 25%.  I have now conducted a lot of testing and can say the following:
The Palm Pre 2 uses battery power when idle far more than most phones.  Even with no SIM (but not in airplane mode) with wifi off, gps off, bluetooth off, the phone uses 15% in 8 hrs of idle time.  Doing nothing.  In airplane mode it uses only 4% over those same 8 hours.  With the SIM in (but not in use, only email checking) it uses more like 25% over that same period.
Improved (decreased) power usage while idle would be a great thing to see as a focus of WebOS development.
Post relates to: Pre 2 p102una (Unlocked NA)

I had the Palm Pre 1 which was really bad, for battery.
I have 5 email accounts, and Facebook, and calling, and some surfing, and the odd game.
I bought the Amzer 2800 Battery, with the back. which worked great on my Pre 1, and, instead of lasting 4-6 hours, my Pre 1 worked for over 24 hours. The only down sides for me was the size of the back, but it was not the biggest back amzer does, and not That Big, however there was a bit of glare in photos taken indoors, or towards sun. And the Amzer case was shiny black, and a bit easier to open, and when you drop the Pre 1, unlike with the original Palm back, the Amzer large case, Amzer battery, and Pre would hit the floor and bounce all different placed, which is not good. However, the Amzer Battery was lovely and worked Great. (my Pre 1 has a thousand dings, and cracks, in it, but still works)
A year later, I bought the Pre 2, and noticed the Amzer 2800 Battery fitted and worked. (I had called Palm, before I received the Pre 2, and they confirmed the battery for Pre 2 is same as the one in the Pre 2, as are the backs the same. although they recomended using recommended Batteries,)
I decided to buy the Amzer 1400 for my Pre 2, which is the same size as the Palm branded battery, and lasts longer, so I can use it with the touchstone original back, that comes with the Pre 2.
Also, i noticed in the suggestions from Palm, on ways to save on batteries, there is a suggestion to force to 2G, if you cannot force to 3G...
However, If you are with the 3 Network (at least here in the UK) I don't think you can do that, as 3 UK were saying that they disconnect phones that are not 3G, and that they disconnect phones that are continually on the 2G network, as 2G has to be paid for, wheras 3G is their own network. So setting phone 2G only for a long time, will cost 3 a lot of money, and 3 say they will be disconnected.

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