Hey guys.. I have a question that bothers me.. when i do heavy gaming on my nexus 7 (2013) my battery drops about 8% every 15mins or so..this is with gps turned off.nfc off.location off.and google services .currents and so forth off.. and brightness on auto..but when i do leave my tablet in deepsleep overnight i only lose about 1% in about 10 hours of deep sleep but when i game my battery drops as fast as 8% in 15mins or so is this normal???