Mi has the best products ranging from powerbank to phones. It has good design and more than anything powerbank charges in 4 hrs by using motorola charger. people can use mobile charger to charge this mobile best powerbank I got it at discount price in flipkart. This power bank is only for 2000 mah battery mobiles, not for 4000 mah mobiles by using this u can only charge once for these types of mobiles.