Q&A for PSE Certification,
PSE,

▍What is PSE Certification?

PSE (Product Safety of Electrical Appliance & Material) is a mandatory certification system in Japan. It is also called ‘Compliance Inspection’ which it is a mandatory market access system for electrical appliance. PSE certification is composed of two parts: EMC and product safety and it is also an important regulation of Japan safety law for electrical appliance.

▍Certification Standard for lithium batteries

Interpretation for METI Ordinance for Technical Requirements(H25.07.01)， Appendix 9，Lithium ion secondary batteries

▍Why MCM?

● Qualified facilities: MCM is equipped with qualified facilities which can be up to the whole PSE testing standards and conduct tests including forced internal short circuit etc. It enables us to provide different customized testing reports in the format of JET, TUVRH, and MCM etc.

● Technical support: MCM has a professional team of 11 technical engineers specialized in PSE testing standards and regulations, and is able to offer the latest PSE regulations and news to clients in a precise, comprehensive and prompt way.

● Diversified service: MCM can issue reports in English or Japanese to meet clients’ need. So far, MCM has completed over 5000 PSE projects for clients in total.

Recently there are 2 pieces of important news for Japanese PSE certification:
METI considers to cancel the annexed table 9 testing. PSE certification will only accept JIS C 62133-2:2020 in the annexed 12.New version of IEC 62133-2:2017 TRF template added Japan National Differences.Many questions are raised focusing on above information. Here we pick up some typical questions to answer the most concerned questions.
Supplementary notice: In 2008, PSE started mandatory certification for portable rechargeable lithium-ion battery, in which the standard is the annexed table 9. Since then, the annexed table 9, as an explanation of technical standard for lithium-ion battery standard referring to IEC standard, has never amended. However, we know that in annexed table 9, there’s no requirement for observing voltage of every cell. In this situation, the protection circuit may not work, which will lead to an overcharge; while in JIS C 62133-2, which refers to IEC 62133-2:2017, requires monitoring voltage of each cell. The protection circuit will activate to stop charging when cell is fully charged. In order to prevent fire accident caused by overcharging of lithium-ion batteries, the annexed table 9, which does not require cell voltage detection, will be replaced by JIS C 62133-2 of Annexed table 12.
Both annexed table 9 and JIS C 62133-2 are based on IEC standard, except for Q1 requirement, along with vibration and overcharge. Annexed table 9 is relatively stricter, thus if annexed table 9 test is passed, then there’s no concern to pass through JIS C 62133-2. Nevertheless, as there are differences between two standards, test reports for the one standard are not accepted by the other.