Here are the initial copper prototypes of a 12 volt, and a 24 volt battery using old laptop cells.
Her is a view inside before solder....
Solar Power System with Up-cycled Components Part 2
Here are the initial copper prototypes of a 12 volt, and a 24 volt battery using old laptop cells.
Her is a view inside before solder....
Now those are pretty wicked :)
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They worked reliably, but converting to plastic isolates the negative electrodes. That way I can switch them separately. It also gives me the burn protection by dropping the damaged cell into the water when it melts. It is also less expensive, which counts when I have to make hundreds of sticks. But, these work very well!
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