Japan Power Bank / Portable Charger Export Compliance — PSE + METI + UN38.3 + Japan Agent Full Process
Power banks (portable chargers) exported to Japan face some of the strictest compliance requirements among all electronic product categories. From the Den'an Law's Diamond PSE to METI filing, UN38.3 transport safety, Japan Agent designation, and potentially applicable radio regulations, there are four major mandatory requirements. Missing any one of them can lead to Japanese customs seizure or platform delisting.
Four Mandatory Compliance Items
1. Diamond PSE Certification — Den'an Law
Power banks containing lithium batteries are classified as "Specified Electrical Appliances" under Japan's Den'an Law and must obtain Diamond PSE certification. The certification process includes: submitting samples to a METI-recognized laboratory for lithium battery safety testing (per JIS C 8712 or JIS C 8714), followed by factory inspection, after which the PSE certificate is issued upon passing.
Test items include: external short circuit test, forced discharge, crush test, overcharge protection, temperature cycling, mechanical shock, and low-pressure simulation.
2. METI Filing
Within 30 days of obtaining the PSE certificate, METI filing must be completed. The Japan Domestic Administrator (Japan Agent) submits the filing as the "Notifying Business Operator" through METI's electronic reporting system. Upon approval, a "Notifying Business Operator Number" is obtained and must be marked on the product or packaging.
3. UN38.3 Transport Safety Testing
Lithium battery products must pass UN38.3 testing (UN Model Regulations Section 38.3) before air or sea transport, comprising eight sub-tests T1-T8. UN38.3 reports are typically valid for 1 year and must be provided together with the 1.2-meter drop test report. Airlines will refuse to accept products that have not passed UN38.3.
4. Japan Agent Designation
Non-Japanese enterprises' power bank products must designate a Japan Domestic Administrator (Japan Agent), responsible for: submitting METI notifications, retaining product test records, liaising with Japanese regulatory authorities, and handling consumer safety complaints.
Power Bank Compliance Full Process Timeline
| Step | Time Required | Key Milestone |
|---|---|---|
| Sample Submission & PSE Testing | 3-5 weeks | Failed tests require correction and re-testing |
| Factory Inspection (PSE) | 1-2 weeks | Required only for Diamond PSE |
| PSE Certificate Issuance | 1 week | All testing + inspection conditions met |
| METI Filing | 1 week | Within 30 days after PSE |
| UN38.3 Testing | 2-3 weeks | Can run parallel to PSE |
| Japan Agent Designation | 1 week | Must be finalized before PSE application |
| Total | 6-10 weeks | Advance planning recommended |
Additional Requirements for Wireless Functionality
If a power bank product also features Qi wireless charging, Bluetooth app control, or similar functionality, it must additionally meet Japan's Radio Law (Denpa Law) technical standards conformity certification (Giteki), i.e., MIC certification. Wireless functionality is strictly regulated under Japan's Radio Law, and technical parameters must comply with Japanese frequency bands (2.4 GHz, etc.) and output power limits.
FAQ
Q: Can PSE testing and UN38.3 testing be done in parallel?
A: Yes, and it is recommended. The two are independent of each other, and parallel processing shortens the overall timeline. GreenArk can coordinate laboratories to advance both tests simultaneously.
Q: What responsibilities does the Japan Agent bear?
A: The Japan Agent bears legal liability for product safety liaison within Japan. If a product safety incident occurs, the Japan Agent must cooperate with investigations. Therefore, Japan Agent selection is critically important.
Q: Does Amazon Japan have any additional requirements for power banks?
A: Besides PSE and METI filing, Amazon requires sellers to submit UN38.3 and MSDS (Material Safety Data Sheet) when creating shipments for lithium battery products. Missing either document may result in warehouse拒收.
Q: Does the PSE certificate have an expiry date?
A: The PSE certificate itself has no fixed validity period, but factory inspection typically requires renewal every 3-5 years. Product design or critical component changes require re-testing.
GreenArk (Shenzhen) Certification Co., Ltd. specializes in power bank / portable charger export-to-Japan compliance services, providing one-stop solutions from PSE certification, METI filing, and Japan Agent matching to UN38.3 testing — helping brands efficiently complete full-process compliance and smoothly enter the Japanese market.
GreenArk (Shenzhen) Certification Co., Ltd.
www.greenark-sz.com | sui@greenark-sz.com
