On March 31, 2026, the State Administration for Market Regulation (SAMR) and the Standardization Administration of China (SAC) officially released GB 47372-2026 Safety Technical Specification for Power Banks, China’s first mandatory national standard for portable power banks. This milestone marks the official entry of the power bank industry into an era of mandatory safety supervision.

Core Timeline:New CCC certification applications under the new national standard will be available starting July 2026 | Full mandatory enforcement commences on April 1, 2027. Products without valid certification will be prohibited from factory shipment and sales thereafter. The certification preparation window is now open, requiring manufacturers to take prompt action.

This article provides a systematic compliance guide for power bank manufacturers from three dimensions: certification preparation roadmap, core testing items, and timeline planning.

I. Five Core Upgrades of GB 47372-2026

Compared with the former recommended standard GB/T 35590-2017, GB 47372-2026 introduces five critical upgrades:

II. 7-Step CCC Certification Application Process

1. Product Compliance Gap Analysis

Benchmark against GB 47372-2026 to identify discrepancies between existing products and new regulatory requirements. Focus on the completeness of intelligent protection circuits, unique coding solutions, and production quality control capabilities.

2. Select Certification Body & Submit Application

Choose CNCA-approved CCC certification authorities and submit application documents including product manuals, circuit schematics, and critical component lists.

3. Entrust Third-Party Labs for Type Testing

Commission CNAS-accredited third-party testing institutions designated by certification bodies to conduct official type testing in accordance with GB 47372-2026. Test reports serve as the core basis for CCC certification approval.

4. Technical Review of Test Reports

Certification authorities conduct in-depth technical audits on test data, with key focus on newly added items such as nail penetration and lithium plating testing records.

5. On-Site Factory Audit

Certification teams conduct factory inspections to verify raw material incoming inspection records, key production process controls, and finished product delivery inspection capabilities.

6. Certification Decision & Certificate Issuance

CCC certificates are granted upon full compliance with qualified test results and successful factory audits.

7. Post-Certification Continuous Supervision

Certified manufacturers are subject to regular and random follow-up inspections to maintain sustained product compliance.

III. Detailed Introduction to Five Key Testing Items

3.1 Nail Penetration Test

Test Purpose: Simulate mechanical puncture damage to battery cells and verify thermal runaway resistance.Compliance Requirements: No fire or explosion allowed; minor deformation, temperature rise and electrolyte leakage are permitted.Enterprise Recommendations: Conduct pre-compliance testing in advance to assess cell puncture safety; obtain official puncture test data from battery cell suppliers.

3.2 Cycle Aging & Lithium Plating Detection

Test Purpose: Detect abnormal lithium plating and dendrite growth after long-term charge-discharge cycles to prevent internal short circuits.Compliance Requirements: No obvious lithium dendrite precipitation on negative electrodes after specified cycling times.Enterprise Recommendations: Adopt high-quality battery cells with certified cycle aging reports; optimize BMS parameters to reduce lithium plating risks during late charging stages.

3.3 Intelligent Protection Function Verification

GB 47372-2026 mandates built-in effective hardware-based protection systems for power banks, covering:

• Over-charge Protection Test
• Over-discharge Protection Test
• Short-circuit Protection Test
• Over-temperature Protection Test

Enterprise Recommendations: All protection functions must rely on independent hardware rather than pure software control; conduct comprehensive review of BMS chip parameter configurations.

3.4 Unique Coding Verification

Every power bank must be equipped with an exclusive unique identification code for full lifecycle traceability. Manufacturers are advised to establish a batch + serial number coding system, with barcodes, QR codes or RFID marks printed on product labels and outer packaging.

3.5 Enhanced Conventional Safety Tests

IV. Certification Preparation Timeline

April – June 2026

Complete product compliance gap analysis; book third-party testing services; initiate design upgrades for non-compliant products.

July – September 2026

Launch official type testing per the new national standard; submit formal CCC certification applications.

October – December 2026

Complete technical review of test reports; pass on-site factory audits; obtain GB 47372-2026 CCC certificates.

January – March 2027

Manage certificate transition; achieve full product line certification coverage; deliver internal training on new standard regulations.

April 1, 2027

Official mandatory enforcement of GB 47372-2026. All uncertified power banks are banned from production and commercial sales.

FAQ

When will GB 47372-2026 be fully enforced?

Officially released on March 31, 2026, the standard will be fully mandatory on April 1, 2027. All power banks sold in the Chinese market must hold valid CCC certificates under GB 47372-2026 after the enforcement date. New certification applications open in July 2026, and manufacturers are strongly recommended to complete certification during the transition period.

What are the specific requirements for the new nail penetration test?

The test uses a standard steel needle to penetrate battery cells at a regulated speed. Core compliance criteria include zero fire and zero explosion, allowing minor deformation and electrolyte leakage. This test evaluates battery thermal runaway resistance against physical damage.

What is cycle aging lithium plating detection and why is it critical?

Lithium plating detection inspects lithium dendrite precipitation on battery negative electrodes after repeated charging and discharging cycles. Severe lithium plating causes internal short circuits and battery fires, posing major safety hazards for aging power banks. The new test item strengthens long-term user safety protection.

Do existing power bank products require re-certification?

Yes. Original certifications based on the old recommended standard GB/T 35590-2017 will become invalid after April 1, 2027. All manufacturers must complete new type testing and apply for updated CCC certificates to maintain market access.