Document Overview
Document Overview This UN38.3 test report (Reference No. WTH25D03074332B) certifies the lithium-ion battery used in the ETENWOLF S7 tire inflator. The document was issued by Waltek Testing Group Co., Ltd., an accredited testing laboratory based in Shenzhen, China. Issue Date: April 9, 2025 Test Period:…
- Document type
- Certification Report
- Prepared by
- Michelle Torres
- Published
- Last reviewed
- Topics
- International Transportation: CB / MSDS / UN38.3
Document Overview
This UN38.3 test report (Reference No. WTH25D03074332B) certifies the lithium-ion battery used in the ETENWOLF S7 tire inflator. The document was issued by Waltek Testing Group Co., Ltd., an accredited testing laboratory based in Shenzhen, China.
Issue Date: April 9, 2025
Test Period: March 31, 2025 to April 9, 2025
Scope: This certification verifies that the rechargeable lithium-ion battery meets international transportation safety requirements as outlined in the United Nations Manual of Tests and Criteria, Section 38.3, Eighth Revision (ST/SG/AC.10/11/Rev.8).
Test Result: The submitted samples PASS all required tests and comply with the standards.
Product Information
The ETENWOLF S7 tire inflator is powered by a high-capacity rechargeable lithium-ion battery pack designed for portable inflation applications.
| Specification | Value |
|---|---|
| Product Type | Rechargeable Li-ion Battery |
| Model Number | 3S4P-12400mAh |
| Rated Voltage | 10.8V |
| Rated Capacity | 12400mAh |
| Energy Rating | 133.92Wh |
| Cell Configuration | 12 cells in 3S4P arrangement |
| Cell Model | INR18650-32HE (3100mAh per cell) |
| Dimensions | 134.7mm × 94.1mm × 57.9mm |
| Weight | Approximately 698.6g |
| Form Factor | Prismatic |
Charging Specifications:
- Type-C Input: 5V/3A, 9V/3A, 12V/3A, 15V/2.5A, 20V/2A
Discharge Specifications:
- Type-C Output: 5V/3A, 9V/3A, 12V/3A, 15V/2.5A, 20V/2A
- USB Output: 5V/2A
Key Details
The UN38.3 test protocol requires batteries to undergo eight mandatory safety tests (T1-T8) under various charge states and cycling conditions. The S7 battery was tested according to the following matrix:
| Test Item | Sample Numbers | Sample Condition |
|---|---|---|
| T1 – T5 | B01# – B05# | First cycle, fully charged state |
| T1 – T5 | B06# – B10# | After 25 cycles, fully charged state |
| T6 | C01# – C05# | First cycle, 50% of design rated capacity |
| T6 | C06# – C10# | After 25 cycles, 50% of design rated capacity |
| T7 | B11# – B14# | First cycle, fully charged state |
| T7 | B15# – B18# | After 25 cycles, fully charged state |
| T8 | C11# – C20# | First cycle, fully discharged state |
| T8 | C21# – C30# | After 25 cycles, fully discharged state |
Test Environment Conditions:
- Ambient Temperature: 20°C – 25°C
- Ambient Humidity: 45% – 75%
Total Samples Tested: Multiple battery samples across different charge states and cycling conditions to ensure comprehensive safety validation.
Standards & Compliance
The battery in the ETENWOLF S7 was tested according to the UN38.3 standard, which is the internationally recognized safety requirement for lithium battery transportation.
Test Standard: United Nations Manual of Tests and Criteria, Eighth Revision Edition Amendment (ST/SG/AC.10/11/Rev.8 38.3)
The Eight Mandatory UN38.3 Tests Include:
- T1 – Altitude Simulation: Tests battery performance at simulated high altitude (low pressure) conditions
- T2 – Thermal Test: Evaluates battery safety under extreme temperature variations
- T3 – Vibration: Simulates transportation vibration conditions
- T4 – Shock: Tests battery integrity under mechanical shock
- T5 – External Short Circuit: Verifies protection against short circuit conditions
- T6 – Impact/Crush: Evaluates structural integrity under mechanical stress
- T7 – Overcharge: Tests safety features during charging beyond rated capacity
- T8 – Forced Discharge: Verifies protection during forced discharge conditions
Compliance Status: The battery samples submitted for testing met all requirements of the above standard. This certification is essential for legal air and sea transportation of lithium batteries.
Validity & Certification Body
Testing Laboratory: Waltek Testing Group Co., Ltd. (Shenzhen)
Laboratory Address: No. 77, Houjie Section, Guantai Road, Houjie Town, Dongguan City, Guangdong, China
Contact Information:
- Tel: +86-769-2267-6998
- Fax: +86-769-2267-6828
- Email: [email protected]
- Website: http://www.waltek.com.cn
Report Personnel:
- Tested by: Jacky Sun (孙纤)
- Reviewed by: Jack Chen (陈咏松)
- Approved by: Deval Qin (秦林伟)
Applicant & Manufacturer: Guangdong Bestek Technology Co., LTD
Manufacturer Address: No.1, North Gaopu 8th Road, Yuancheng Industrial Park, Heyuan City, Guangdong, P.R.China
Sample Receipt Date: March 28, 2025
Report Issue Date: April 9, 2025
Validity Period: UN38.3 certifications do not have a fixed expiration date, but retesting is recommended if significant design changes occur or as required by regulatory authorities. The report remains valid as long as the battery design and manufacturing process remain unchanged.
Frequently Asked Questions
What is UN38.3 certification and why is it important?
UN38.3 is an internationally recognized safety testing standard for lithium batteries. It ensures that batteries can be safely transported by air, sea, and land without posing fire or explosion risks. This certification is mandatory for shipping lithium batteries internationally and is required by carriers like FedEx, UPS, DHL, and all major airlines.
Does the S7 tire inflator battery meet air transport requirements?
Yes, the ETENWOLF S7 battery has passed all UN38.3 tests, making it compliant for air transportation. With a capacity of 133.92Wh, it falls within the 100-160Wh range that requires proper labeling and documentation but is permitted on passenger aircraft with airline approval.
What does the 3S4P configuration mean?
The 3S4P configuration means the battery pack contains 12 individual cells arranged in 3 series groups (S) with 4 parallel cells (P) in each group. This configuration provides the optimal balance of voltage (10.8V from 3 series cells) and capacity (12400mAh from 4 parallel cells per group), delivering 133.92Wh of total energy.
How long is this UN38.3 certification valid?
The UN38.3 certification for the S7 battery remains valid as long as the battery design, cell model, and manufacturing process remain unchanged. However, if significant modifications are made to the battery pack or if new regulations are introduced, retesting may be required to maintain compliance.
Related Documents
For comprehensive compliance documentation of the ETENWOLF S7 tire inflator, the following related certifications may also be available:
- MSDS (Material Safety Data Sheet): Chemical composition and handling safety information for the lithium-ion battery
- Battery Specification Sheet: Detailed technical specifications and performance characteristics
- CE Certification: European conformity marking for the complete S7 device
- FCC Certification: Federal Communications Commission approval if the device contains wireless components
- RoHS Compliance: Restriction of Hazardous Substances compliance for environmental safety
- IEC 62133 Report: Additional battery safety standard for portable applications
- Transportation Classification: UN3481 classification documentation for lithium-ion batteries contained in equipment
These documents collectively demonstrate ETENWOLF’s commitment to international safety standards and regulatory compliance across multiple jurisdictions.
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