Hi I am using mi power bank 2i 20000 mah. It's price is 1499 is good. It have not 20000 mah . It give us 14500 to 15000 mah power. It's powerful power bank. But it's much heavy. You can not put in your jeans and paint easily. If youi travel much you can take it and put your bag but daily uses it is not good. The best thing of this power bank it's have fast charging support and pass through charging support. It's have two port and twice support fast charging. All Features are good in this power bank. It's a best bower bank under 1500 rupees.