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Chemical battery

Note (?)
Difficulté (?)
Durée (?)3h 0 min.
Coût (?)~10 CHF
Languefrançais deutsch english
License (?)
Making a battery helps to understand how a chemical reaction can produce electricity. It shows also that in a battery there is no real stock of electricity, but the chemical products needed to generate some.

It is important to understand how batteries work as they are more and more used in our daily life (mobile phones, mp3 players, pads, etc.).

Even if the battery of this DIYs project is 'environment friendly', those generally used are highly polluting and produce electricity at a cost of CHF 250. - per kilowatt-hour instead of CHF 0.20 for the electricty coming from our mains ! It is therefore highly advisable to replace disposable batteries with rechargeable ones.





Report the two forms below (download from the blueprints/plan section) on the cardboard and cu ...
Paint the two cardboard bases.   Pass a coloured string in the holes to form shoe la ...
Drill 2 holes in the plywood board according to the diagram.   Paint the wooden boar ...
Attach the 2 'characters' to the board by passing two bolts through the board holes and fixing t ...
Strip the ends of 2 electric wires (25 cm) and wrap one around a nut and the other one around ...
Unscrew the battery cover of the watch. Remove the battery and replace it with the nut-washer ...
Fix the watch stand on the board with double sided foam tape.   Strip on the entire ...
Attach a piece of galvanized metal (zinc) to the end of an electric wire of about 12 cm. Fix a ...