The EU Battery Directive refers to the laws and regulations issued by the European Union regarding batteries and accumulators, with the main aim of reducing the environmental impact of batteries, especially in terms of the disposal and recycling of waste batteries. The Battery Directive 2013/56/EU is the replacement regulation proposed by the EU for the Battery Directive 2006/66/EC. Batteries may contain heavy metals such as mercury, lead, cadmium, and acidic or alkaline electrolyte solutions, which, if not properly handled, can cause varying degrees of harm to human health and the ecological environment. Therefore, the collection and post-treatment of waste batteries are very important. On September 26, 2006, the European Parliament and the Council of the European Union issued Directive 2006/66/EC on batteries and accumulators and waste batteries and accumulators, which includes policies on the restriction of hazardous substances in batteries, the recycling and treatment of waste batteries, and their regeneration. On December 10, 2013, the Official Journal of the European Union officially published the amending Directive 2013/56/EU to the Battery Directive 2006/66/EC, revising several exemption clauses in the new Battery Directive. The EU Battery Directive includes requirements for the limitation of hazardous substances in batteries, labeling requirements, and recycling rate requirements.