from the second:
"When I first got the phone a few days ago, my battery was only lasting about 8 hours just on standby. I called Motorola, and asked them for a solution. Two different Techs told me that when you get the phone, the first time you charge the battery it should be for about 12-15 hours while the phone is off. I didn't think that you had to do this with a smart phone. They told me that since I have had the phone for a few days, and charged it to 100% about 4 times, to wait until it gets down to 15% or below, and turn it off and charge it for about 4 hours.
I did this, and now it lasts for almost 2 days! Maybe some of you already know this, however, I thought I would post it."
Will update when I have tried this