Recycling household batteries is preferable to disposal. Most batteries contain harmful substances such as mercury, cadmium and lead. If they go to landfill these might contaminate the land or groundwater. Three companies in Australia reprocess old batteries to extract sulfuric acid, lead and plastic casing to sell.
Mobile phone batteries
Phone batteries can be recycled through the MobileMuster program
Tip: Avoid battery waste by using rechargeable batteries instead of disposable.
Household alkaline batteries can be disposed of at CleanOut events. These are held in various locations in NSW on specified dates, usually 9am-3.30pm. This service is free.