250ml Can Battery

myminifactory

This one is a must-have for the survivalists and preppers! Transform 250 beverage cans into a battery! All you need is water, table salt, and some copper wire. Benefits Use only 15 grams of biodegradable PLA filament; Keep your cans out of the trash by turning them into a battery! One battery produces about half a volt. A bank of twelve batteries would power an LED lamp, or a ventilation fan, or a small radio, or whatever else you need. Materials Needed Steel wool 10 inches of 12-16 gauge copper wire Pliers / wire cutters 250ml can 3D printer and about 15 grams of PLA filament Three-fourths cup water and one tablespoon table salt Voltmeter (optional) Instructions Print the battery file using biodegradable PLA. No support material or rafts are required, just print with standard settings for your chosen filament. Remove the top of your can using a can opener, then clean up the lip with scissors. Use steel wool to remove the plastic coating on the inside of the can. Take about 10 inches of 12 to 16 gauge copper wire and coil it around a cylinder to make a spring. Leave about 1.5 inches of the spring straight. Feed the straight end of the copper spring through the positive hole of the print, then bend the end with pliers to keep it from falling back through the hole. Cut a small strip on top of the can's lip, about one-eighth inch thick, using scissors. Fill the can with three-fourths cup of water and add one tablespoon of salt. Bend the cut strip upward and feed it through the negative hole of the print as you insert the print into the can. You have now created a battery! Test its voltage and see how much current it produces. You can increase the voltage by adding more salt or copper wire, or by removing more plastic from the inside of the can. Adding an acid like vinegar or drain cleaner will also boost the voltage. Be very careful with this battery, as it generates real electrical current and can be hazardous! Thanks for downloading! If you're feeling generous, leave a small tip and share your prints on Twitter @Dickeyscott1098 or Instagram @dickeyscott.