UN38.3 Test Summary - Battery

Sodium-ion Battery UN38.3 Test Summary

Essential information on the mandatory safety testing standard for transportation

Purpose: To prove that the battery has passed the eight safety tests stipulated by the United Nations (altitude simulation, temperature cycling, vibration, shock, etc.), serving as a "safety pass" for lithium batteries.

Requirements: The report must be issued by a qualified third-party laboratory, and the test sample must be completely consistent with the actual shipped product model and specifications.

1. Function

UN38.3 is a mandatory safety testing standard outlined in the United Nations "Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria" that must be passed before transporting lithium batteries. For sodium-ion batteries, its core function is:

To verify whether sodium-ion batteries (or battery packs) can withstand various hazardous conditions that may be encountered during transportation—such as altitude simulation, thermal shock, vibration, shock, external short circuit, overcharge, and forced discharge—ensuring transportation safety and preventing accidents like fire or explosion.

This certification is a necessary prerequisite for transporting products domestically and internationally via air, sea, rail, and other modes.

2. Who Provides It, and Which Domestic Institutions Offer Such Services?

The UN38.3 test report must be issued by a third-party professional testing and certification institution possessing qualifications from:

China National Accreditation Service for Conformity Assessment (CNAS)
Certification and Accreditation Administration of the People's Republic of China (CMA)

Several authoritative institutions in China provide such services. Examples include:

China Chemical and Physical Power Sources Industry Association (Power Battery Application Branch) and its accredited laboratories

China Certification & Inspection Group (CCIC) and its nationwide branches

Guangzhou GRG Metrology & Test Group Co., Ltd.

Centre Testing International Group Co., Ltd. (CTI)

Shenzhen Academy of Metrology & Quality Inspection (SMQ)

Vincer Testing Technology Co., Ltd. (CVC)

Beijing Jianheng Certification Center (strong background in energy storage batteries)

3. How Long Does It Take to Produce a Report, and How Much Does It Cost?

The timeline and cost vary based on the battery's specific parameters (e.g., energy, capacity, size, structure) and the chosen institution. Below are general estimates:

Timeframe

Typically requires 3 to 6 weeks. The duration depends on:

The test cycle (e.g., thermal tests require longer periods).
Sample preparation status.
The institution's current schedule.

If testing passes in one attempt and the process is smooth, it can be completed in as fast as 2 to 3 weeks.

Cost Range

Approximately ¥10,000 to ¥50,000 RMB or higher. Key factors influencing cost:

Battery type: Testing battery packs (especially with series/parallel configurations) is more complex and costly than individual cells.
Test items: UN38.3 includes 8 test items; institutions determine which are necessary based on battery specifications.
Institution qualifications and reputation: More authoritative institutions usually charge higher fees.