I have an issue with my surface pro 3 dying like 15 seconds after it hits 10%. Does anyone else have this issue? It discharges just fine and I'm getting about 5-6 hours on it with screen at 65% brightness but as soon as it hits 10% I get the warning, then 10 secs later I get 7% warning then 5 secs later it shuts down completely or "hibernates". I don't know if this is normal or if I should go exchange it. Please help!