WHY DO OLD BATTERIES LEAK?
Batteries generate electricity through chemical reactions that move electrons between terminals. In alkaline batteries, a gel called potassium hydroxide conducts electricity. Over time, as the battery works, hydrogen gas builds up inside the sealed casing, increasing pressure. This can create tiny cracks in the metal, causing potassium hydroxide to leak.
When exposed to air, it reacts with carbon dioxide, forming a crust of potassium carbonate, which is harmless. However, potassium hydroxide itself can irritate the skin. To safely dispose the leaking batteries, place them in a plastic bag and take them to a recycling center. Proper disposal prevents environmental harm and keeps everyone safe.
