Attention | China issues GB 24427-2021 "limitation requirements for mercury, cadmium and lead content of zinc negative primary cells"

Batteries are widely used in consumer electronic products, and the waste rate is very fast. If the waste batteries are discarded at will, the heavy metals and other harmful substances contained in them will pollute the soil and groundwater, and then threaten human health. Therefore, many countries or regions in the world have issued corresponding regulations or standards to limit the content of heavy metals in batteries, and China is no exception.

On April 30, 2021, the State Administration of market supervision and administration and the State Standardization Administration of China issued GB 24427-2021 "requirements for the limitation of mercury, cadmium and lead content in zinc negative primary cells", replacing GB 24427-2009 "requirements for the limitation of mercury, cadmium and lead content in alkaline and non alkaline zinc manganese dioxide batteries" and GB 24428-2009 "zinc silver oxide, zinc air Requirements for limiting mercury content in zinc manganese dioxide button cells.

GB 24427-2021 specifies the limit requirements, detection methods and conformity judgment requirements of mercury, cadmium and lead contents in standardized zinc manganese dioxide batteries, zinc silver oxide batteries and zinc air batteries. GB 24427-2021 contains many major revisions. The new standard has the following requirements for mercury, cadmium and lead limits of various types of batteries that have been standardized:

In addition, the new standard stipulates that the detection method of mercury, cadmium and lead in batteries is GB / T 20155; The conformity should be judged according to the results of parallel testing of two groups of batteries in the same batch: the battery identification requirements are also specified in the standard. GB 24427-2021 will be officially implemented on November 1, 2021.