A human-powered crank device is on the market to keep consumer goods charged when an outlet is not available.
The new BoostTurbine backup promise to keep your other devices powered as long as you have the energy to crank its built-in folding handle.
Although the technology seems familiar with in-board devices on radios and the like, this product from Eton offers its own battery capacity plus a standard USB and microUSB ports for connecting your mobile devices.
The salesperson will tell you it takes just a minute of cranking to generate enough power for a quick phone call or a handful of texts.
The BoostTurbine comes with either an internal battery of 1000mAh or one twice the size, is aimed at those who want to be more sustainably green.