Lifecard is dubbed out to be the thinnest power bank on the market, itīs slightly thicker than a credit card but it holds a high density 1500mAh battery thatīs 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 donīt have to worry about the hassle of carrying one. Itīs available for all of the marketīs 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.