How to Make a Battery

This is an easy way to get volts from pennies card board and vinegar

-Pennies (preferably before 1982) 
-cardboard
-Vinegar
-Sand paper
-Duct tape
- Wier

Put all your pennies on a sticky surface and sand them down
Sanding the pennies down will release the zinc under the copper coating 

Cut out cardboard disks and soak them in vingar

Next stack the pennies and cardboard disks in the order of : penny,cardboard, penny, cardboard

Now You can put wire on both ends and duct tape it all up 

Now it should look like this and if you did it right it should give off close to 3-5 volts

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