I had been reading about calibrating your battery for a while. I had been putting it off for a while for no good reason but reading a forum post somewhere made me go for it. It started one day at work when I would turn on everything during each of my breaks and do whatever I could to wear the battery down. By the end of my shift I was about 7% and the phone kept trying to take a nap on me. When I got home I turned everything back on and went into power manager and watched the voltage drop till I was at 1%. After about 15 minutes at 1% the phone brought up a dialog about saving settings and shutting down. I first thought this was an odd way for a phone to “die” and was expecting more of a *poof*. At this point I did what the forum post said and I left the phone off while plugging it into the charger. I left it there all night and unplugged it the next day at around 10am. I did not power the phone back on until it had fully charged (this is the important part from what I have read). Starting that day I was able to use my phone lightly to moderately for 3 days straight.

I ended plugging it back in about 70 hours after its last charge and the phone was still at 58% capacity. During those 3 days I made about 5 phone calls, checked the market (on wifi or 3g) 2+ times a day and downloaded 1-3 apps each time I checked the market. I ran aTrackDog once during this and updated probably about 10 apps. I also used Gtalk about 2-4 times a day, played a few games and did some web surfing. During those 3 days I had wireless, cell location and gps all enabled (not using them all the time of course, but all were on).

Before the calibration I was barely able to get through my full 8 hour shift without charging during my breaks to keep the phone running the full day. This is such a drastic change that I thought I would let those who are experiencing the dreaded G1 battery life woes know that the calibration really does work. It is easy to do and does not take that much time if you kill it before you go to sleep and let it fully charge overnight.