I got my Incredible the week it came out. Last week I started having all sorts of problems and had to reformat the phone several times. Anytime I installed or tried to use an app the phone would crash. They sent me a new one. I put my extended battery in, let it go until it died, then turned the phone off and charged over night. I used the battery, if I remember right, around 60 hours. It definitely got me through 2 full days. This was with my normal use. I don't use it as a phone a whole lot. A call every day or two. Mostly texts, brief internet and some apps. My last phone, the same battery would get me through the day but need recharged over night or I'd be needing to throw it on the following afternoon. So I try my standard battery. Let it drain out, charge it over night, typical use again. It's currently at up time of 33.5 hours and awake time of 1:40:00 with 30% battery left. Again, first phone, that battery would need bumped up a couple of times a day on the charger. Granted when I first got the phone I was obsessed with playing with it, but getting almost 24 hours more between two phones (original and the replacement) using the same battery is odd. It's a hardware 2, just like my last phone. Everything seems to match up spec/number wise in About Phone. I know there are a ton of battery threads, but I didn't know where to put this.