GB24427-2021
Content limitation of mercury, cadmium and lead for zinc anode primary battery
锌负极原电池汞镉铅含量的限制要求
GB 24427-2021 is a current mandatory Chinese national standard for Content limitation of mercury, cadmium and lead for zinc anode primary battery. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Nov 1, 2021.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the production, testing, and acceptance of standardized zinc anode primary batteries, including zinc-manganese dioxide, zinc-silver oxide, and zinc-air batteries, as well as multi-cell battery packs. It specifically covers both alkaline and non-alkaline variants, including various button batteries. Manufacturers of these battery types must comply with these environmental and material restrictions to enter the Chinese market. It references GB/T 8897.1 and GB/T 8897.2 for standardized battery models.
Technical requirements
GB 24427-2021 establishes mandatory limit requirements for the content of mercury, cadmium, and lead in zinc anode primary batteries. It replaces the previous versions GB 24427-2009 and GB 24428-2009, introducing updated definitions for cadmium-free and lead-free batteries. The standard specifies distinct maximum concentration limits for heavy metals across different battery categories, such as button batteries versus cylindrical or prismatic cells. Engineers must ensure their specific battery models meet the exact threshold limits defined in the standard's technical tables. It also outlines specific criteria for labeling batteries as mercury-free, cadmium-free, or lead-free based on their chemical composition. Furthermore, the standard provides a cross-reference table for old and new model designations for button batteries, ensuring clear identification of applicable battery types. Compliance with these material restrictions is strictly enforced for all designated zinc anode primary batteries.
Testing methods
The testing procedures for determining the mercury, cadmium, and lead content are conducted in accordance with GB/T 20155. The standard requires parallel testing of two sample batteries from the same batch. For small button batteries weighing less than 1g, multiple cells must be combined to form a single test sample to meet the minimum mass requirement. Manufacturers must follow these specific sampling and testing protocols to ensure valid compliance results.
FAQs
What products are regulated under GB 24427-2021?
It regulates zinc anode primary batteries, including zinc-manganese dioxide, zinc-silver oxide, and zinc-air batteries, encompassing both standard cylindrical/prismatic cells and button batteries.
Are there any updates from the previous version of GB 24427?
Yes, this version merges and replaces GB 24427-2009 and GB 24428-2009. It introduces new definitions for cadmium-free and lead-free batteries and updates the specific limit values for mercury, cadmium, and lead across various battery types.
How is compliance determined for small button batteries?
For batteries weighing less than 1g, multiple cells are combined to create a test sample. Two such combined samples are tested in parallel, and both must meet the heavy metal limit requirements to pass the compliance check.
The summary above provides a high-level overview of GB 24427-2021. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 24427-2021 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- K82
- ICS
- 29.220.10
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- Ministry of Industry and Information Technology
Relationships
Replaces:GB 24427-2009, GB 24428-2009