First time poster here and i can't see a previous thread that has the same problem as i have. My Nexus 7 is about 2 months old and not had a single problem. Until yesterday. It powered down (battery was low) and i couldn't turn it back on. Tried the power down and volume button tip, but nothing. This evening i plugged it into the mains charger for a couple of hours, then held down the power button for 20seconds or so and it booted up as normal. It appears to work as normal, BUT the battery charge indicator reads 0 % and as i type it's been plugged into the mains power for over 4 hrs and it still reads 0 %. It's working exactly as it should do, but just won't charge. Any advise or tips? Thanks.