Modern LED lamps don't use a huge amount of electricity but on a long expedition I believe that a lot of batteries need to be taken. Has anybody explored the idea of a charger for use underground?
A waterwheel driven gadget that could be placed in a waterfall or a fast bit of water?
The energy given off as heat when I descend a large pitch must be huge, any ideas on how to harness that energy and charge a battery? Better yet harness the energy and use it to power a winch to get me back up!
A waterwheel driven gadget that could be placed in a waterfall or a fast bit of water?
The energy given off as heat when I descend a large pitch must be huge, any ideas on how to harness that energy and charge a battery? Better yet harness the energy and use it to power a winch to get me back up!