electric toothbrush without a battery

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twinrider1

Diamond Member
Sep 28, 2003
4,096
64
91
A hydroelectric toothbrush is the future. Let the water from the faucet spin a generator to power the brush.

Now that I think about it, how about a turbine in the main water line. Generate power from every flush, shower, etc.
 

jaedaliu

Platinum Member
Feb 25, 2005
2,670
1
81
A hydroelectric toothbrush is the future. Let the water from the faucet spin a generator to power the brush.

Now that I think about it, how about a turbine in the main water line. Generate power from every flush, shower, etc.

Ooh! a poopy turbine! my favorite type!

Doable, but probably not worth the effort. There's not a lot of head in your sewage pipe.
 

twinrider1

Diamond Member
Sep 28, 2003
4,096
64
91
Not in the waste pipe. In the main water line. A small setup is probably too expensive for how rarely the water runs in a home. But I do wonder if it would work at a municipal water plant. I'd guess they have a pretty steady flow of water.
 

sdifox

No Lifer
Sep 30, 2005
99,363
17,548
126
Not in the waste pipe. In the main water line. A small setup is probably too expensive for how rarely the water runs in a home. But I do wonder if it would work at a municipal water plant. I'd guess they have a pretty steady flow of water.

err, municipality spends money pumping water up to a water tower to pressurize the water and you are asking them to do what?
 

Puppies04

Diamond Member
Apr 25, 2011
5,909
17
76
I have one that you just shake to recharge. I just go ahead and put toothpaste on it and stick it in my mouth while I shake to charge it. By the time I'm done charging it, my teeth are clean.

You win a cookie, make sure you brush your teeth afterwards though.
 

twinrider1

Diamond Member
Sep 28, 2003
4,096
64
91
lol, I'm not saying it will create as much energy as it takes to pump it up there. But the money spent to pump the water up there is a sunk cost. It's getting pumped up there anyway. Why not capture some of that energy on the way back down.