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Solar - Powered Batteries Answered

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Check out these cool batteries!
  • Their creator is Knut Karlsen.
See what he said:
At home i always have some batteries lying around, either rechargeable or normal ones. Usually they are empty, but i'd like them to be always fully charged. I could use a normal charger and there is a lot of solar devices that charge rechargeable batteries. I wanted it simpler; why hasn't anyone made a battery with integrated solar cells? The idea of the "SunCat" batteries where born. The batteries should just bask in the sun like a cat and left for a while, in a sunny window, they would slowly recharge.
For more details visit this site.

Thanks!

Stanislav

9 Replies

user
rhysc7 (author)2010-05-16

can you show us how to make them

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user
comodore (author)rhysc72010-05-30

I have some ideas, and hunches, but there is no tutorial or anything on the net....

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andybuda (author)2010-01-22

where did you get that film from im in uk
i want to make solar cell charge battries by day then switch via a photo cell to power l e ds can you be pf any help for wireing

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Kiteman (author)2009-02-17

They're a nice idea, but do they actually work?

I don't see any diode there to keep the charge flowing the right way, so is it possible these are just mock-ups to show the idea?

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user
11010010110 (author)Kiteman2009-02-17

the diode can be a tiny film hidden in the cell and aint the cell itself semiconductor anyway ?

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Kiteman (author)110100101102009-02-17

It is, but "semiconductor" does not mean "one way current". Batteries can discharge through solar cells that are not putting out their full voltage.

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11010010110 (author)Kiteman2009-02-17

if the cells are equivalent to voltage source and resistor (like batteries) then yes if they are equivalent to that and diode then no i dont know of the properties of solar cells. but i think very possible that they do act like diode

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comodore (author)Kiteman2009-02-17

Here is where I found this, it contains more details....
I will update my topic right now! :D
Also, while you are still here could you look at my https://www.instructables.com/answers/Electromagnet_Help_How_to_Make_a_Small_but_very_S/?
Thanks! :)

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