Power banks, duplicacy in power bank increasing day by day, Local and copied power banks making fools. I bought a power bank mi 16000 mah from a local shop with no warranty or bill , so I checked there thats is working piece, so when I came home and start using power bank, and it making me disappointed, so I wants to tell you all guys dont buy local power banks, when you buy get orginal with warranty card, local and duplicate power banks also make harms for cellphones, so be aware and buy orginal