Lifecard
Lifecard is dubbed out to be the thinnest power bank on the market, it´s slightly thicker than a credit card but it holds a high density 1500mAh battery that´s powerful enough to bring your smartphone back to life in a jiffy, you can even slip it in your wallet to keep it available should you ever need some juice. Another great feature is the built in cable so you don´t have to worry about the hassle of carrying one. It´s available for all of the market´s major brands such as IOS, Android, Blackberry and others. To get an idea of the power you get, the Lifecard on full power gets you 80% battery on an iPhone 5s, or 65% on a 6 model, 40% on Samsung S5 or an iPhone Plus model. With a brushed stainless steel finish, it looks really good to.