Who all are using Nook Simple Touch here and facing battery problems? I got a brand new Nook Touch just yesterday evening, checked some of its features and left it on standby mode for the whole night. While leaving it at night there was some about 80% battery charge but when i saw it in morning it was at 48% (remember it was on Standby). There was no connection on like wifi or any but still so much of battery drainage ? is there any problem with my device or all Nook Simple Touch comes with the same problem ?