I have an iPad 2 wifi-only model. I fully charged it and have been using it for the last 45 minutes now non-stop (checking mail and safari with brightness at middle) and it's already dropped to 87%. Based on this usage that would give me just under 6 hours battery. I don't expect to get the full 10 hours that Apple claim, but the fact that I'm getting just over a half of what they claim makes me wonder if there's something wrong with my iPad? I understand some factors may affect performance...maybe 10 hours is with brightness set at lowest or maybe the percentage is not that accurate as an indicator. Just wondered how much battery you guys get from a full charge and if any of you have got close to 10 hours?