Hello! I've had my tablet since June last year, and a few months ago it all charged fine when I was using the usb cable connected either to my iPhone charger or to my laptop. I didn't use it for a couple of months and I've just turned it on to charge it now, and the battery is showing as not charging and the percentage is decreasing, however the estimated time of usage I have left is increasing. For example, when I first turned it on it had 74% battery and 51 minutes remaining, the screen then locked then after unlocking it jumped to 22% battery but now has 1hr 24 minutes. Connected to my laptop it acknowledges the USB storage option perfectly fine as before, but still says battery not charging. Does anyone have any ideas? I'd have no idea how to replace the battery or anything by myself.