I have been using this power bank since 9 months and I just think of a valued savings of money of buying this power bank till now also.
I used this power bank a lot these days in my bag it is always there, this power bank gives 10000 mah capacity which can charge a 4000 mah phone two times.
This power bank is made of lithuim polymer which is also a great point.
This power bank cost upto 899 and some a days its money lowers in decent days.
I suggest you to buy only this power bank for greater usage, life and performance