I took my phone off charge this morning and 8am made maybe 2-3 phone calls all lasting 1-2 mins, and maybe 6 texts. and by 11am it was at 70%. Im running bb v.4 with nextheme over clocked to 800mhz max 250 min. What could i do to make my battery a whole lot better? also if i use rom manager and go to 2.0.1 will i get the OTA update to go to 2.1?