Lack of reliable power is a major problem!
Over 1.2 billion people in the developing world do not have electricity when they need it. This includes over half a million low cost and government schools in India, Kenya and other developing countries. These power cuts last from 4 hours to all day. A 100 million school going children are particularly affected with learning devices like tablets, laptops, projectors lying around useless! The only option is toxic, heavy, and dangerous lead acid batteries.