I've gone through four of these, the local store is begining to think I might be doing someting wrong. It has been found on the interwebs that the battery controller is the culprit. My last one, everything was absolutely fine - dont' get me wrong this is a beautiful peice of fine craftsmanship however with one little flaw the dream turns into a nightmare. It's like carrying a 7" inch PC - yes it's a PC (intel x86 Atom QuadCore) so you dont' have to go to an App Store (like all the other Android/iOS) like other toys and simply install anything made for a PC! USB-ON-THE-GO. the only downside of this device was the RAM memory only being 1 GB, if that was around 3GB I would keep buying them until one lasts forever. It seems a bit rare as well this kind of device, how many 7" PCs that you can carry around in your back pocket exist out there...? :)