This is a brand new SB that I received today, is the i7/16GB/1TB model. I was using the clipboard alone and I had 28% battery left, I closed all the open application and place the SB in sleep mode by pressing the power button, around 20min later I checked it and it was at 18% battery left, it seems like too much battery consumption in just 20min of doing nothing. Also when the clipboard was 100% the battery estimated 2 hours left and I was just browsing news using Readiy, that was the only app running. What are reasonable expectations for battery life for the clipboard and the whole thing together? Does the battery requires some kind of calibration? I've noticed that hibernation is fast, and I can use that instead of sleep, but that kills the whole purpose of instant on. Any feedback or suggestion would be appreciated, with this level of power management, unfortunately my initial reaction is that the SB has high potential of going back to the store, and that's bad because I really like the device.