So one month ago , I had bought an ambrane powerbank which is of 10000mah and after using it, I came to know that it was not a good deal.
As the powerbank needs approx 8 to 10 hours to get fully charged , and the contradictory is that the same amount of time it takes to charged my 5000mah phone. It takes approximately 3 hours to charge my phone. Also the power cable provided with the ambrane powerbank is just too small , so that I have to hang my powerbank while charging it. Apart from it's performance, the design and the material from which it makes is so slippery, which also irritates me while handling my phone and powerbank together.