I find it strange that no one has thought of a battery app that really holds statistics, not just shows current info/snapshots. Maybe I've missed this app somehow, if anyone knows of one, please let me know. I mean that the info I would like is to know how much autonomy I have with this battery. Would like to know how much this device can take on calling hours or when it's 'in use' and put that against the total time in between charges. This allows me to calculate the best time for me to plugin my phone again without harming the battery much. And yes, you may have guessed that I have a larger battery then normal. The problem with this one is that it doesn't accurately show the battery state. After one or two days it will go under 15% and the red light will flicker, whilst it will stay on for three or four more days. With calling somewhat, texting a lot and browsing, my uptime is about 5-6 days.