This power bank is really a great Powerbank with high power capacity I bought it 1year ago and using till now its really an amazing powerbank.
To be honest when I was buying powerbank firstly I searched amazon for some popular brands of Power bank like sony, xiomi etc. But while scrolling I found this cooolnut 20000mah powerbank and then I saw it and ordered after ordering it I had doubt that as its furnished by Indian company it might be of cheap quality but when I recieved this beast I found it to be so good and after using 6 months , in my area once in those 6 months electricity flow came so high that I had plugged in my powerbank and it got short circuit and after that I was quite unhappy but I was lucky as it was shock proof and then I complained service centre and they treated me so nicely and told me to send powerbank to their centre and I send the powerbank and after 10 days I got new . And now its working fine.
Its cool amongst other high price Powerbank