I have been using this power Bank from last 3 months is not working properly and I get very bad results from this power Bank. It becomes hot so fast. It does not charge the mobile fast and it also damages the battery of the mobile phones. This power Bank does not last long. It does not charge mobile but battery discharges it. But it has one advantage that it can be carried easily everywhere but mainly it is carried by the travellers. So from my opinion we should not buy this product it is only a waste of money.