Xiaomi 20000mAh Power Bank
 

"We're taking a look at the Xiaomi 20000mAh power bank today, to see if it does pack as much juice as it claims to be for such a cheap price. Whether you are a Pokemon Go player, carry around with you plenty of electrical gadgets, or just want to 'juice' up your smartphone all the time, a power bank has become an essential piece of equipment that many people can't go without."

http://www.funkykit.com/reviews/acce...r-bank-review/