Alkaline Batteries
Common household batteries are also called alkaline batteries; the chemical type is important in choosing proper disposal options.
While “regular” batteries - AA, AAA, C, D, 9-volt - contained high levels of mercury until approximately 1997, today’s contain just trace elements of toxins. They are no longer considered a threat to properly equipped modern landfills. Dispose of standard alkaline batteries in the regular trash.
Rechargeable Lithium batteries are considered Household Hazardous Waste and must be disposed of accordingly.