The product works exactly as described. This one has even more flexibility when you are mobile, for example, requires the smartphone for a source of energy. It is a pleasure when you can rely on his ordinary reserve and plan. Only charging the Power Bank could be in time nor decimated. Nevertheless, I give 5 *, because I can not tolerate that. Law is useful, inter alia, the built-in flashlight that can not only provide light but very long. I speak from a buy rating.