On December 25, 2025, a regulation profoundly impacting cross-border e-commerce sellers officially took effect. The revised "Four Product Safety Acts" by Japan's Ministry of Economy, Trade and Industry (METI) were fully implemented, and Amazon Japan subsequently issued an urgent notice requiring overseas sellers of relevant product categories to complete compliance rectification.

For sellers directly selling power banks to Japanese consumers from overseas, the rules of the game have been completely rewritten. Products that fail to complete METI registration and appoint a Domestic Representative in Japan within the specified timeframe will face delisting risks and be prohibited from further sales in Japan.

Core of the New Rules: Your Identity Has Transformed into a "Specified Importer"

The core of this revision to the Electrical Appliances and Materials Safety Act is to directly lock the liability subject onto overseas sellers themselves. In the past, liability might have been partially borne by Japanese importers; now, stores shipping directly from China to Japanese consumers are explicitly recognized as "Specified Importers" under the law and must independently assume full compliance responsibilities.

This brings two unavoidable legal obligations:

1. Submit Business Notification to METI: As a Specified Importer, you must officially register with Japan's Ministry of Economy, Trade and Industry.

2. Appoint a "Domestic Representative in Japan": You must designate a representative located within Japan. This individual must have a Japanese address, possess Japanese communication capabilities, and act on your behalf to communicate with government authorities such as METI<superscript id="9">1-7. For product listings created on or after December 25, 2025, the business notification must include detailed information of both yourself and your Domestic Representative in Japan.

Why Is METI Registration Mandatory for Power Banks?

METI registration is a mandatory requirement under Japan's Electrical Appliances and Materials Safety Act. It is not a product safety test but an official market access registration document. Its purpose is to ensure that electronic devices entering the Japanese market comply with Japan's safety standards and trade regulations, protect consumer rights and interests, and require manufacturers to abide by Japan's trade regulations and tax policies.

For products like power banks that fall within the PSE certification catalog, METI registration is a statutory procedure that must be completed after obtaining PSE certification. Amazon has strict monitoring in this regard—if registration information is not submitted within the specified timeframe (usually one month after receiving the notice), the relevant product information will be removed.

From Certification to Sales: Comprehensive Compliance Roadmap for Power Banks in Japan

To achieve legal sales in the Japanese market, power banks must go through an interlocking compliance process. The following diagram clearly illustrates the entire process from preparation to listing:

[Diagram Placeholder: Power Bank Japan Compliance Process Flowchart]

Key Reminder: According to Japanese regulations, the applicant for METI registration must be a local Japanese importer or an authorized agency. For Chinese sellers without Japanese partners, it is necessary to find a qualified service provider to provide importer qualification support.

Avoid Pitfalls: High-Frequency Error List for METI Registration

Sellers often experience registration failures and cargo detention due to careless oversights. The following are critical risk points that must be avoided:

Incomplete or Incorrect Documents

Submitted product manuals must be in Japanese or bilingual Japanese-English; English-only documents will be directly rejected. Meanwhile, ensure that PSE certificates, product specifications (BOM lists), and other documents are complete and consistent in information.

Inconsistent Labels and Markings

• The diameter of the PSE mark on the product must be no less than 5mm, and the name or ID of the Japanese importer must be clearly marked below it. Printing only Chinese manufacturer information is invalid.

• The obtained METI registration number (usually in the format R-XXXX-XXXX) must also be printed on the product or its packaging.

Ignoring "Domestic Representative in Japan" Requirements

Under the new rules, failing to appoint a qualified Domestic Representative in Japan will directly result in non-compliance. The representative must have a legal Japanese address, no criminal record, and be able to perform duties on your behalf.

Missing Amazon Notification Deadline

After receiving Amazon's notice to submit METI registration information, it must be completed within one month; otherwise, the product listing may be removed.

Choose Guangdong Energy Storage Testing: One-Stop Solution to Compliance Crises

Faced with complex regulations, tight timelines, and unfamiliar Japanese administrative procedures, professional matters must be entrusted to professionals. As a specialized institution focusing on international certification of battery products, Guangdong Energy Storage Testing Technology Co., Ltd. provides you with a one-stop solution from testing to registration:

1. Accurate Compliance Diagnosis & Path Planning: We first confirm your product specifications, determine the correct PSE certification type (Round/Diamond), and plan the most efficient compliance path to avoid fundamental directional errors.

2. End-to-End METI Registration Support: We offer comprehensive services from PSE certification consulting, preparation of full sets of registration materials, to assisting you in connecting with reliable and compliant Domestic Representatives in Japan (or importer qualifications) until the final successful completion of METI registration.

3. Professional Pre-Audit & Risk Avoidance: Our expert team is familiar with the audit focus of Amazon and METI, and can pre-audit documents and labels before official submission, maximizing the one-time pass rate and saving your valuable time.

4. Cost & Cycle Optimization: For product series models, we can provide a "PSE certification package" strategy to help you effectively save overall certification costs.

The regulation effective date has arrived—passive waiting means sales disruptions and inventory losses. Proactive and professional compliance actions are your only choice to stabilize your position in the Japanese market.

If you have any questions about power bank METI registration, PSE certification, or the new Amazon Japan rules, please contact Guangdong Energy Storage Testing Technology Co., Ltd. immediately. We will provide you with one-on-one professional consulting and customized solutions to help your products quickly return to the compliant track.