I unplugged 11 hours ago after doing the phones first full over night charge, and I am down to 80% left to go before empty. For me that seems more than adequate for the minimal use I had on the phone today, just a bunch of texting, good number of emails, two phone calls about 5 minutes each, checked FB and Twitter a few times both from the website, WIFI on the whole time, GPS and bluetooth off the whole time, and Beautiful Widgets updating every hour. The highest one on my list is the WIFI then the Android OS is following that up.