Lavrans Laading invented a totally mechanical flashlight – the only thing that’s electronic about it is the LED! No batteries, all mechanical – relying on a series of springs and a wind-up mechanism. The prototype of Lavrans’ flashlight runs for up to 3 minutes on a charge, but is being engineered to have better numbers. The main point is that it’s all mechanical – let’s see how it goes.
Check out the images – interesting form factor!