I purchased Pipo S2 tablet two weeks ago. It worked fine at first but cople days ago I noticed that even though Android says that the battery is full, the device will shutdown immediately after I disconnect charger. Sometimes the meter will go from 100% to 0 % all of sudden and the tablet begins to charge it again, percentage increases, however, in reality I think it is not really charging since the tablet shuts down without charger. I Googled that with some tablets they have shipped with wrong type of charger, I hahe 5v 2a and I already ordered more powerful one, but the question, has anyone experienced similar issues with this tablet?