ok, I just bought the sony ericsson xperia x10 mini pro and i charged it the whole night, and the next day that used it, the cellphone's battery lasted me about 7 hours, I didn't make any phone call, didn't have bluetooth on, no wifi, nothing I just used it to check the time a few times and when i got home i realized that the battery was almost empty, I don't know is that normal for that cellphone?