Has anyone else noticed this, but it seems my batter "life" seems to be fluctuating based on my usage instead of the batter power i.e: If im running multiple apps my battery would go down 55% and if i kill few tasks and stop using it the batter would jump up to 65%, and its not only for the widgets its the battery indicator that comes with the phone too. One moment It was orange and less thatn 50% and after a while it went green again and looked like it was above 50%. Is this normal for android?