Japan Power Bank / Portable Charger Export Compliance — PSE + METI + UN38.3 + Local Representative: The Complete Process
Power banks (portable chargers) exported to Japan face some of the strictest compliance requirements among all electronic product categories. From the diamond PSE mark under the Electrical Appliance and Material Safety Act, to METI filing, UN38.3 transport safety testing, and mandatory local representative designation — plus potentially applicable radio regulations — there are four major mandatory compliance items. Missing any single link can result in Japanese customs seizure or platform delisting.
Four Mandatory Compliance Items
1. Diamond PSE Certification — Electrical Appliance and Material Safety Act (DENAN)
Power banks contain lithium batteries and are classified as "Specified Electrical Appliances" under Japan's Electrical Appliance and Material Safety Act, requiring diamond PSE certification. The certification process includes: submitting samples to a laboratory accredited by Japan's Ministry of Economy, Trade and Industry (METI) to complete lithium battery safety testing (per JIS C 8712 or JIS C 8714); upon passing, arranging a factory inspection; and upon successful inspection, issuance of the PSE certificate.
Test items cover: external short circuit test, forced discharge, crush test, overcharge protection, temperature cycling, mechanical shock, low-pressure (altitude) simulation, and more.
2. METI Filing
Within 30 days of obtaining the PSE certificate, METI filing must be completed. The Japan-based responsible person (local representative), acting as the "notifying business operator," submits the filing through METI's electronic (declaration) system. Upon approval, a "notifying business operator number" is issued, which must be displayed on the product or its packaging.
3. UN38.3 Transport Safety Testing
Lithium battery products must pass UN38.3 testing (Section 38.3 of the UN Manual of Tests and Criteria) before air or sea transport, comprising eight sub-tests (T1–T8). UN38.3 test reports are typically valid for one 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. Local Representative (Japan-Based Responsible Person) Designation
Power bank products from non-Japanese enterprises must designate a Japan-based responsible person (local representative), who is responsible for: submitting METI filings, maintaining product test records, liaising with Japanese regulatory authorities, and handling consumer safety complaints.
Power Bank Compliance Timeline — Full Process
| Step | Time Required | Key Milestone |
|---|---|---|
| Sample submission & PSE testing | 3–5 weeks | Non-conformances require rectification and re-testing |
| Factory inspection (PSE) | 1–2 weeks | Required for diamond PSE only |
| PSE certificate issuance | 1 week | All testing + inspection conditions satisfied |
| METI filing | 1 week | Within 30 days of PSE issuance |
| UN38.3 testing | 2–3 weeks | Can run in parallel with PSE |
| Local rep 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 wireless functions, it must additionally satisfy the Technical Standards Conformity Certification (GITEKI) under Japan's Radio Act — i.e., MIC certification. Wireless functions are strictly regulated under Japan's Radio Act, and technical parameters must comply with Japan's frequency bands (e.g., 2.4 GHz) and output power limits.
Frequently Asked Questions (FAQ)
Q: Can PSE testing and UN38.3 testing be conducted in parallel?
A: Yes, and this is recommended. The two are independent of each other; running them in parallel shortens the total timeline. GreenArk can coordinate with laboratories to advance both tests simultaneously.
Q: What responsibilities does the local representative bear?
A: The local representative bears legal responsibility for product safety liaison within Japan. If a product safety incident occurs, the local representative must cooperate with investigations. Selecting the right local representative is therefore critically important.
Q: What additional requirements does Amazon Japan impose on power banks?
A: Beyond PSE and METI filing, Amazon requires sellers to submit UN38.3 test reports and MSDS (Material Safety Data Sheets) when creating shipments for lithium battery products. Missing either document may result in FBA warehouse rejection.
Q: Does the PSE certificate have an expiration date?
A: The PSE certificate itself has no fixed expiration, but factory inspections typically require renewal every 3–5 years. Changes to product design or critical components require re-testing.
GreenArk (Shenzhen) Certification Co., Ltd. specializes in power bank / portable charger export compliance services for the Japan market, providing a one-stop solution spanning PSE certification, METI filing, local representative matching, and UN38.3 testing — helping brand owners efficiently complete full-process compliance and enter the Japanese market smoothly.
GreenArk (Shenzhen) Certification Co., Ltd.
www.greenark-sz.com | sui@greenark-sz.com
