I was hoping for a battery with more mah in the same package. probally a 1500mah. I was getting like 7hours at best. I turned down the britness 1 block and and turned off the 3G. Now I am up to 2 1/2 days with a normal amount of calls, listening to music, turning on the 3g for web browsing (maybe 1 hour total over the 2 1/2 days) and back off, and last about 1 hour of wifi use.