Hi guys, I just recieved my Onda V711 in the mail yesterday and I used it for about 4 hours before it died out, but it has been charging for well over 13 hours now overnight and when i checked it today, it's only 47% ? This can't be normal can it? Is there anything i can do? I can't even use it while it's powered on and charging at the same time, because the battery drains instead of charging up. It's the USB AC wall charger that came with it. Other than that, I'm loving this thing Any help would be much appreciated. Thanks alot.