So we all know about calibrating the battery, being fully charged when flashing rom, etc, but I had some ideas after reading through the forums. batterystats.bin is what holds the statistics for the battery and thus the data used by Android to calculate battery life. So if you are having great battery life, why not backup the batterystats.bin file? Why start over and lose all that data? This and coupled with this extream technique I read on a post somewhere here where a user fully drained the battery. Ran phone till dead, and kept trying to power on phone till it wouldn't anymore, pull/replace battery, charge while off, then pull/replace battery, then turn back on. I think I'm missing part of it, I remembered they said the phone thought it was full charged, but found it really was only partially charged and with this was able to really get 100% charged. Just an idea that came out after reading all these posts.