Yes. 2.1.5 has the percentage display. For myself, on 2.1.5, Light off after 10, sleep after 15, never power off, I get approx a month's use between charges (using most days for at least half and hour (often more), with occasional use of the light).
My wife has the same (same settings), but my daughter with the same settings and not significantly more use, seems to need a charge almost weekly, and she has another strange problem where sometimes when coming out of sleep, she can be 10s of pages away (usually further forward), than where she left it. She and I have covers using a magnet to auto-sleep (I wonder if that is part of the problem...).
Perhaps that might be of some use?
Matt
