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Small power source Answered

I was planning to make LED jewelery, but would need a very small power source.
In the best case it could be powered by the body's movement.

Is there anything small enough to bit on a wrist, yet can power about 10 LEDs?

Discussions

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MajorRockstar7

8 years ago

 I would use a car battery
Just kidding unless you are trying to kill yourself
Probably a watch battery and there are some amazingly thin & small ones

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nnadine1973MajorRockstar7

Reply 5 years ago

car battery=12v . He will do not kill himself, in any case. When you don't know, don't speak.

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revelae

8 years ago

you could use a charging system like in "Shake it like a Tic-Tac"

although, there is some debate in the comments about how to wind the coil, how much to wind, etc.

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itsthatsguy

8 years ago

yes, and no, if you mean super small, you could light 10 led's for up to 10 seconds, if you mean liek watch battery size, then ya a cfew hours of use.