I'm on my 4th full charge cycle since getting my TFP the Friday before New Years. Battery life is amazing and comparable to iPad2 even under heavy activity. The major difference though was changing the WIFI disconnect policy to Never when plugged in (wifi off when screen off when on battery). By default it's on never, which means wifi is on the whole time it is enabled. You can change it under Settings/Wireless & Networks/Wireless Settings/Wifi disconnect Policy. I've noticed with wifi on the whole time over night I lost about 16-20 percent on battery when I wake up. But with wifi being off with the policy change, I now lose 1% every night instead. If only my Infuse phone was like this I'd be a happy camper. I don't like stuff running in the background, if I need email or have Skype/IM running, I will go in the app and do it not it doing for me and wasting battery when I don't care for it yet. With wifi off this baby can last for days on standby. On heavy use during work days(meaning not having the tablet around me while at work) I can stretch it to 2 days before charging. Light use work days about 4 days. A full day of heavy use I'd get about 9 hours. And that's 3d gaming, Netflix/videos/music streaming/email/Skype for example. Normal use about 14-15 hours. I've attached a screen of my battery use with wifi off over night and while at work today. Love it!!