Quote:
Originally Posted by Bladewire
Evidently they make in home mini version of this hydroelectric generator you can by online that generate a fair amount of electricity. This one does 13 watts
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I think you're confusing watts and volts. He doesn't seem to be measuring amps or watts, only volts, so there's no way to tell how much power the generator (actually a pump used in reverse, which is far less efficient) is putting out. The battery also complicates things because that's going to have a stored charge.
This could be used in a situation where you have a low power device which cannot be powered by mains or solar for some reason, and can get by with a small recharge at regular intervals as someone runs the tap or shower, but as a general power source it's not going to put out much energy, and it will be horribly inefficient. You're basically robbing energy from the water supply to convert it (at a great loss) to electricity. Not to mention the potential for wasting all that water...