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How to Make a Homemade Battery. Four Methods: Making a Soda-powered Battery Making a Saltwater-powered Battery Making 14-cell Water-powered Battery Making a Hand-powered Battery Community Q&A. To make your own battery at home, all you need is two different types of metal, some lead wires, and a conductive material. Many household items can be used as the conductive material into which you place your metals â for example, saltwater, a lemon, or even dirt.
The four major technologies used for miniature batteries are: lithium, zinc air, alkaline, and silver oxide. Button cell batteries can contain 0-25 mg of mercury (and sometimes more). Lithium miniature batteries contain no intentionally-added mercury. However, small amounts of mercury are still added to most zinc air, alkaline and silver oxide miniature batteries in order to prevent the formation of internal gases that can cause leakage.