On December 25, 2025, a regulation profoundly impacting cross-border e-commerce officially took effect. Amazon Japan issued an urgent notice stating that the revised Four Product Safety Acts of Japan would be strictly enforced starting today. For sellers of power banks, this means the game rules have completely changed. For the first time, the new regulations explicitly bring overseas direct-shipping sellers under regulatory oversight—power banks without PSE certification and supporting compliance procedures face the risk of immediate delisting.

Core of the New Rules: Direct Liability for Overseas Sellers

The core change of the revised Electrical Appliances and Materials Safety Act (the legal basis for PSE certification) is clarifying the direct liability of overseas sellers:

1. You Become a "Specified Importer"

Under the new rules, stores selling power banks directly to Japanese consumers from overseas regions like China are legally recognized as "Specified Importers" and must independently bear full responsibility for product safety compliance.

2. Must Appoint a "Domestic Representative in Japan"

As an overseas seller, you must designate a representative located in Japan. This person must have a Japanese address, possess Japanese language proficiency, and be responsible for communicating with the Ministry of Economy, Trade and Industry (METI) and other authorities経済産業省.

3. Complete Business Notification to METI

Sellers need to submit a business notification to METI through their domestic representative or independently to complete the registration process.

Amazon clearly requires that for product listings created on or after December 25, the information must include detailed details of the seller themselves and their domestic representative in Japan.

Power Bank PSE Certification: An Irreplaceable Safety Access Threshold

Within the above legal framework, PSE certification is a mandatory safety certification that power banks must obtain to enter the Japanese market. Power banks fall under the scope of the Electrical Appliances and Materials Safety Act—since February 1, 2019, power banks without the PSE mark have been prohibited from sale in Japan.

Certification Type: Mostly Round PSE

Power banks generally belong to "Non-Specified Electrical Appliances" and should apply for the Round PSE Certification (Class B). Only when the energy density of their internal battery cells exceeds 400Wh/L might they need to be treated as "Specified Electrical Appliances".

The main differences between the two are as follows:

Key Test Standards

PSE certification testing for power banks is mainly based on Japanese JIS standards, commonly including JIS C 8712 (safety requirements for lithium batteries) and others. Test items typically cover safety aspects such as overcharging, external short circuit, crushing, and drop tests.

An important risk note: According to the official interpretation by METI, portable energy storage power supplies with AC output sockets may be classified as "Non-PSE Subject Products" and cannot directly apply for PSE certification. Incorrectly applying and affixing the PSE mark may result in product delisting from the platform. Such products require more complex compliance solutions.

Full Compliance Roadmap: From Certification to Listing

For overseas sellers to ensure compliant sales of power banks on Amazon Japan, the following interlocking steps must be completed:

1. Start the compliance process
2. Product safety testing: Based on JIS standards (e.g., JIS C 8712)
3. Apply for PSE certification: Most power banks qualify for Round PSE
4. Prepare METI registration materials: (PSE certificate, Japanese documents, etc.)
5. Designate a domestic representative in Japan (legal requirement)経済産業省
6. Submit registration to METI through the domestic representative
7. Obtain METI registration number, affix compliant labels (PSE mark + registration number, etc.)
8. Submit complete compliance evidence to Amazon
9. Compliantly list and sell

Common "Fatal" Mistakes & Pitfall Avoidance Guide

Many sellers experience audit failures and goods detention due to detailed oversights. Below are high-frequency risk points:

Mistake 1: Incorrect Judgment of Certification Type or Product Scope

Applying for PSE for products that are actually "non-subject" or incorrectly applying for Round PSE for high-energy-density batteries will result in fundamental non-compliance.

Mistake 2: Inconsistent Labels & Markings

The diameter of the PSE mark on the product must be ≥5mm, and it must include information about the Japanese importer or responsible party—only printing Chinese manufacturer information is invalid. The METI registration number must also be clearly marked.

Mistake 3: Incomplete or Non-Compliant Documents

Manuals submitted to Amazon or METI must be in Japanese or Japanese-English bilingual—English-only versions will be rejected. Self-inspection records, product specifications, and other documents must also be complete and standardized.

Mistake 4: Ignoring Domestic Representative Requirements

Under the new rules, failing to appoint a qualified domestic representative in Japan and complete METI business notification will directly result in the loss of sales eligibility経済産業省.

Why Choose Guangdong Energy Storage Testing as Your Compliance Partner?

Faced with the tight timeline, complex regulations, and language barriers, professional matters must be entrusted to professionals. As a specialized institution focusing on battery product testing and certification, Guangdong Energy Storage Testing Technology Co., Ltd. provides you with a one-stop solution:

1. Accurate Compliance Diagnosis

We first confirm whether your product falls within the PSE scope and what type of certification it should apply for, avoiding fundamental directional errors.

2. Efficient Certification & Registration Services

We offer end-to-end services from PSE standard testing and certification application to assisting you in connecting with reliable domestic representatives in Japan and completing METI registration.

3. Professional Risk Pre-Audit

Our engineering team is familiar with Amazon’s audit focus and common rejection reasons, capable of conducting pre-audits before document submission to significantly improve the one-time pass rate.

4. Continuous Regulatory Tracking

We closely monitor Japanese regulatory developments to ensure your products remain compliant long-term.

The December 25 deadline has arrived—passive waiting means sales disruptions and business losses. Proactive, professional compliance is your only option to stabilize market share in Japan and avoid risks.

If you have any questions about power bank PSE certification, METI registration, or the new Amazon Japan rules, please contact Guangdong Energy Storage Testing Technology Co., Ltd. immediately. Let our professional services help your products quickly return to the compliant track and steadily explore the Japanese market.