Will the Pixel C charge while it's still on? My Galaxy Tab 10.1 would gain battery if I plugged it in and, for example, read my book for a couple hours. This one I had plugged in over night and when I opened it back up it was nearly drained. It was sitting by itself untouched all that time, but didn't charge. Does the MTP/Charging option only show up when you connect a data cable? I can't find it in the menus. It's a serious deficiency in the newer versions of Android that you have to specify.