A tougher, greener battery could power phones in Africa


One of the problems facing developing countries is that people in rural communities tend to walk around with dead cell phones. That is because mobile devices are cheaper than ever, but power plants are still expensive. But as a work-around in off-the-grid communities, phone owners have learned to run charge cords off of used car batteries. Now, Fenix International, a San Francisco-based design firm, may have a better solution for
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