Energy salt water battery

New version with saltwater, copper and aluminum.
This project is very easy to do!
Needed: copper pan, aluminum pan, a circle insulating rubber, motor cd rom 2-3 volts, 1 liter of water with 3-4 tablespoons of salt for foods. The duration of the motor rotation is about 18-19 minutes.
When the salt water depletes its energy, it must be filled with new water and salt, or the salt water discharge can be loaded with an external battery of 1.5 volts.
* The success of this experiment is necessary to have an motor that has a low power consumption 15-20 mA max. and a voltage of 2-3 volts, "motor cd rom". The use of motors for toys are not suitable for this type of experiment.
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