You can use your favorite can of soda to remove rust for the same reason that lemons can: the citric acid. Because lemons have the highest amounts of citric acid, lemons are great for removing rust and cleaning away stains; however, did you know they also make an incredible lemon battery capable of generating 5 volts of electricity?
YouTuber NorthSurvival uses a lemon, six copper nails, six zinc nails, and some wire to create a battery that can generate enough electricity to start a fire. When wired correctly, the copper and zinc nails create a reaction with the citric acid. And, the nails function like positive and negative terminals on a battery. He uses steel wool to “short circuit” the battery which creates enough heat to melt the steel wool and create some flames.
Watch how to start a fire using a DIY lemon battery.
This is the same reason why 9-volt batteries should be disposed of properly. If simply thrown in a trash can, they can also start a fire using the same concept. Please share this great survival tip of using lemons and supplies to make a fire using a DIY lemon battery with your friends and family.