Electricity

The Laptop can work on ordinary electrical power, or can be charged up using a hand crank. Schools will need power to run the school server and Internet connection. Even if regular electrical service isavailable, schools need to have an Uninterruptible Power Supply, probably containing a diesel generator, that can run indefinitely in case of major power outages. We can consider other alternatives for low-power servers with perhaps a few car batteries or a marine battery.

Pointers to projects doing this in the field, please. We don't need links to the general literature, which is easy to find through either Wikipedia or Google.