Since cell phones were invented, portable chargers must have been invented! In Venezuela we have a serious crisis with electrical energy, so many times we are completely incommunicado. In these days, one person was known to have been apprehended by the government and she could not report because the phone was unloaded. The PowerCore II6700 can be the salvation! In a world where we are exposed to our cell phone downloading, the PowerCore is a good investment. Very good hunting