Document Overview
Document Overview This page presents the official UN38.3 Test Report issued by Waltek Testing Group Co., Ltd. (深圳沃特检验集团股份有限公司) for the lithium-ion battery pack used in the ETENWOLF S1 portable tire inflator. The report documents compliance testing conducted in accordance with the United Nations Recommendations on…
- Document type
- Certification Report
- Prepared by
- Michelle Torres
- Published
- Last reviewed
- Topics
- International Transportation: CB / MSDS / UN38.3
Document Overview
This page presents the official UN38.3 Test Report issued by Waltek Testing Group Co., Ltd. (深圳沃特检验集团股份有限公司) for the lithium-ion battery pack used in the ETENWOLF S1 portable tire inflator. The report documents compliance testing conducted in accordance with the United Nations Recommendations on the Transport of Dangerous Goods — Manual of Tests and Criteria, Eighth Revised Edition, Section 38.3 (ST/SG/AC.10/11/Rev.8 38.3).
| Field | Detail |
|---|---|
| Report Number | WTH25D12333150B |
| Document Type | UN38.3 Test Report |
| Issuing Laboratory | Waltek Testing Group Co., Ltd., Dongguan, Guangdong, China |
| Applicant / Manufacturer | Guangdong Bestek Technology Co., LTD, No.1, North Gaopu 8th Road, Yuancheng Industrial Park, Heyuan City, Guangdong, P.R.China |
| Date of Sample Receipt | 2025-11-19 |
| Date of Testing | 2025-12-15 to 2025-12-24 |
| Date of Issue | 2026-01-13 |
| Overall Test Result | PASS — The submitted samples comply with the above standards |
Product Information
The battery pack tested is integrated into the ETENWOLF S1 portable tire inflator. Below are the complete electrical and physical specifications as recorded in the test report.
| Parameter | Specification |
|---|---|
| Product Name | Lithium-ion Battery Pack |
| Model Number | 2S1P-2600 |
| Configuration | 2 cells, 2 Series 1 Parallel (2S1P) |
| Cell Model | ICR18650 |
| Cell Rated Capacity | 2600 mAh |
| Rated Voltage | 7.4 V |
| Rated Capacity | 2600 mAh |
| Rated Energy | 19.24 Wh |
| Max. Charge Voltage | 5 V |
| Standard Charge Current | 1300 mA |
| Max. Charge Current | 2000 mA |
| Standard Discharge Current | 10000 mA |
| Max. Discharge Current | 15000 mA |
| Discharge Cut-off Voltage | 5.5 V |
| Form Factor | Cylindrical |
| Dimensions | 132.5 mm × 20.5 mm × 18.6 mm |
| Mass | Approx. 129.3 g |
Key Details
Testing was performed under controlled environmental conditions: ambient temperature 20°C–25°C, relative humidity 45%–75%. Tests T.1 through T.5 were conducted sequentially on the same battery samples. Tests T.6 and T.8 used previously untested batteries. Test T.7 used undamaged batteries from the T.1–T.5 sequence.
The table below summarises each UN38.3 test item, the samples used, their state at the time of testing, and the verdict.
| Test | Description | Sample Numbers | Sample State | Verdict |
|---|---|---|---|---|
| T.1 | Altitude Simulation (11.6 kPa, 23.7°C, 6 hours) — simulates low-pressure air transport conditions | B01#–B04# | 1st cycle, fully charged | PASS |
| T.1 | Altitude Simulation | B05#–B08# | 25th cycle, fully charged | PASS |
| T.2 | Thermal Test (72±2°C / −40±2°C, 10 cycles, ≤30 min interval) — assesses seal integrity and internal electrical connections | B01#–B04# / B05#–B08# | Fully charged (1st and 25th cycle) | PASS |
| T.6 | Impact / Crush Test | C01#–C05# | 1st cycle, 50% of design rated capacity | PASS |
| T.6 | Impact / Crush Test | C06#–C10# | 25th cycle, 50% of design rated capacity | PASS |
| T.7 | Overcharge Test | B09#–B12# | 1st cycle, fully charged | PASS |
| T.7 | Overcharge Test | B13#–B16# | 25th cycle, fully charged | PASS |
| T.8 | Forced Discharge Test | C11#–C20# | 1st cycle, fully discharged | PASS |
| T.8 | Forced Discharge Test | C21#–C30# | 25th cycle, fully discharged | PASS |
Mass loss criteria applied per UN38.3: for cells or batteries with mass ≥75 g the allowable mass loss is ≤0.1%; for 1 g ≤ M ≤ 75 g the limit is ≤0.2%; for M < 1 g the limit is ≤0.5%. The 2S1P-2600 pack (≈129.3 g) must not exceed 0.1% mass loss. All samples passed this requirement.
T.1 altitude simulation requirement: no leakage, no venting, no disassembly, no rupture, no fire, and open-circuit voltage after test ≥ 90% of pre-test voltage (voltage criterion not applicable to fully discharged samples).
Standards & Compliance
The ETENWOLF S1 battery pack was evaluated against the following standard:
| Standard | Full Title | Scope |
|---|---|---|
| ST/SG/AC.10/11/Rev.8 — Section 38.3 | UN Recommendations on the Transport of Dangerous Goods — Manual of Tests and Criteria, Eighth Revised Edition, Amendment, Chapter 38.3 | Lithium metal and lithium-ion cells and batteries — safety testing for transport qualification |
UN38.3 is the internationally recognised transport safety standard required by air carriers (IATA Dangerous Goods Regulations), sea carriers (IMDG Code), and road/rail freight operators worldwide. Compliance is mandatory for any lithium-ion battery shipped as cargo or contained in equipment. All tests in this report were executed by Waltek Testing Group Co., Ltd., an accredited third-party laboratory. The report bears the laboratory’s accreditation stamp and the signatures of the tester (Jason Zhen / 甄锦炎), reviewer (Jack Chen / 陈咏松), and approving authority (Deval Qin / 秦林伟).
Validity & Certification Body
| Field | Detail |
|---|---|
| Report Number | WTH25D12333150B |
| Date of Issue | 2026-01-13 |
| Testing Laboratory | Waltek Testing Group Co., Ltd. (深圳沃特检验集团股份有限公司) |
| Laboratory Address | No. 77, Houjie Section, Guantai Rd., Houjie Town, Dongguan City, Guangdong, China |
| Laboratory Tel | +86-769-2267 6998 |
| Laboratory Fax | +86-769-2267 6828 |
| Laboratory Email | [email protected] |
| Laboratory Website | http://www.waltek.com.cn |
| Tested By | Jason Zhen (甄锦炎) |
| Reviewed By | Jack Chen (陈咏松) |
| Approved By | Deval Qin (秦林伟) |
| Report Template Ref. | WT-510-201-02-B |
| Report Scope | Page 1 of 16 (full 16-page report on file) |
This report is valid for the exact product model, configuration, and cell type listed. Any change to the battery chemistry, cell model, configuration, rated capacity, or physical dimensions would require a new UN38.3 evaluation. The report may not be partially reproduced without prior written permission from Waltek Testing Group Co., Ltd. Results apply solely to the tested samples and are not transferable to other batches without additional testing.
Frequently Asked Questions
- What does UN38.3 certification mean for the ETENWOLF S1 battery pack?
- UN38.3 is the mandatory transport safety standard for lithium-ion batteries. Passing UN38.3 means the ETENWOLF S1 battery pack has been tested and verified to be safe for air, sea, and ground transport. Airlines and freight operators require this certification before accepting lithium-ion batteries as cargo or in consumer devices.
- Which specific tests did the ETENWOLF S1 battery pack undergo?
- The 2S1P-2600 battery pack completed all applicable UN38.3 test procedures: T.1 Altitude Simulation, T.2 Thermal Test (rapid temperature cycling between 72°C and −40°C), T.6 Impact/Crush, T.7 Overcharge, and T.8 Forced Discharge. Each test was performed on batteries at both the 1st charge cycle and after 25 charge/discharge cycles, covering both fresh and aged cell states. All tests returned a PASS verdict.
- What are the key electrical specifications of the S1 battery pack?
- The battery pack in the ETENWOLF S1 is rated at 7.4 V, 2600 mAh, and 19.24 Wh. It uses two ICR18650 cells in a 2S1P configuration and supports a maximum discharge current of 15,000 mA, which enables the high-torque inflation performance of the device.
- Is the UN38.3 report from an independent accredited laboratory?
- Yes. Report WTH25D12333150B was issued by Waltek Testing Group Co., Ltd., a third-party testing laboratory based in Dongguan, Guangdong, China. The report carries the laboratory’s accreditation recognition seal and the signatures of three authorised personnel — tester, reviewer, and approving authority — as required for the document to be legally valid.
Related Documents
The following certification and compliance documents are typically required alongside a UN38.3 test report for a product like the ETENWOLF S1 portable tire inflator:
- IEC 62133 / UL 2054 Battery Safety Certification — electrochemical safety standard for portable sealed secondary lithium cells and batteries used in portable applications.
- CE Declaration of Conformity (LVD / EMC) — required for sale in the European Economic Area, covering electrical safety and electromagnetic compatibility of the complete inflator device.
- FCC Part 15 Report — required for sale in the United States, certifying that the device does not cause harmful radio frequency interference.
- RoHS Compliance Certificate — confirms the battery pack and device components are free from restricted hazardous substances per EU RoHS Directive 2011/65/EU.
- REACH SVHC Declaration — confirms no substances of very high concern above threshold concentrations per REACH Regulation (EC) No 1907/2006.
- KC Certification (Korea) — required for sale in South Korea under the Electrical Appliances and Consumer Products Safety Control Act.
- MSDS / SDS (Material Safety Data Sheet) — mandatory for shipping lithium-ion batteries; must accompany the UN38.3 report for IATA and IMDG compliance packages.
Document Pages
