i had the same problem with battery not charging & was ready to do a factory reset,after researching for 12 hours google & youtube, Tried various things to no avail, finally ---i turned all functions off (like wifi, bluetooth, volume, gps, etc, and through task manager, deactivated all apps ) & tried what an earlier post had suggested---put the power off & plugged in using the Original samsung charger-- after 3 minutes , i turned on the device and battery had jumped from 28 % to 87 %. so i turned it off just to be sure--turned back on within a minute : it charged to 90 % ----experimented kept power on with charger, no change in battery, so i turned power off again & continued charge----within 49 seconds up to 94 %-- Only worry will this be my life with my samsang note 10.1?--am not a techie--just have a google & youtube search obsession.