Hello, I bought a tab 2 months ago, brand new. It worked super until two days ago. I opened my tab and the battery meter showed 90%. After 30 minutes of using the tab (only net browser) and the battery meter was on 15%. Ok... I turned the screen of, then turn it on (after 20 minutes) and the battery meter was on 75%. Same story, the battery was dropping fast 75-70-68-65% and so on. Yesterday I charge the tab to 100%, then it dropped fast to 15% in only 20 minutes. Can anyone tell me what to do? Thanx!