Document Overview
Document Overview This article covers the FCC Supplier’s Declaration of Conformity (SDoC) test report for the Helios J1 Portable Automotive Jump Starter, issued by Waltek Testing Group HCT (Shenzhen) Co., Ltd. The document is issued under reference number WTH25H06163592R1E (superseding WTH25H06163592R1) and covers electromagnetic compatibility…
- Document type
- Certification Report
- Prepared by
- Michelle Torres
- Published
- Last reviewed
- Topics
- North America: FCC / UL
Document Overview
This article covers the FCC Supplier’s Declaration of Conformity (SDoC) test report for the Helios J1 Portable Automotive Jump Starter, issued by Waltek Testing Group HCT (Shenzhen) Co., Ltd. The document is issued under reference number WTH25H06163592R1E (superseding WTH25H06163592R1) and covers electromagnetic compatibility (EMC) testing in accordance with FCC CFR 47 Part 15 Subpart B.
- Document Type: FCC-SDoC Test Report
- Reference Number: WTH25H06163592R1E
- Previous Reference: WTH25H06163592R1
- Test Report Form: TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01
- Internal Form: HCT/RF-23-21
- Date of Issue: 2025-09-23
- Overall Test Result: Pass
- Issuing Laboratory: Waltek Testing Group HCT (Shenzhen) Co., Ltd., Building B, Tianji Industrial Park, 1/F. & 2/F. & 3/F., No.30-9, Laiyin Road, Xinsheng Community, Longgang Subdistrict, Longgang District, Shenzhen, Guangdong, China
- Scope: Conducted Emission and Radiated Emission testing for unintentional radiators
Product Information
The Equipment Under Test (EUT) is the Helios J1 Portable Automotive Jump Starter, designed and manufactured by Guangdong Bestek Technology Co., LTD. This product is marketed under the ETENWOLF brand and is intended for use as a portable power source capable of jump-starting automotive vehicles.
- Product Name: Portable Automotive Jump Starter
- Model Number: Helios J1
- Brand: ETENWOLF
- Applicant: Guangdong Bestek Technology Co., LTD
- Applicant Address: No.1, North Gaopu 8th Road, Yuancheng Industrial Park, Heyuan City, Guangdong, P.R. China
- Manufacturer: Guangdong Bestek Technology Co., LTD
- Manufacturer Address: No.1, North Gaopu 8th Road, Yuancheng Industrial Park, Heyuan City, Guangdong, P.R. China
- Product Category: Portable automotive inflation and power tool
- Sample Receipt Date: 2025-06-23
- Test Period: 2025-06-24 to 2025-06-26
Key Details
The following table summarizes the core test parameters and findings from the FCC EMC test report for the Helios J1.
| Parameter | Detail |
|---|---|
| Reference Number | WTH25H06163592R1E |
| Previous Reference Number | WTH25H06163592R1 |
| Test Standard | FCC CFR 47 Part 15 Subpart B |
| Test Report Form | TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01 |
| Test Categories | Conducted Emission, Radiated Emission |
| Date of Sample Receipt | 2025-06-23 |
| Date of Testing | 2025-06-24 to 2025-06-26 |
| Date of Issue | 2025-09-23 |
| Overall Result | Pass |
| Prepared By | Snow Zeng |
| Approved By | Tony Wu |
| Testing Laboratory | Waltek Testing Group HCT (Shenzhen) Co., Ltd. |
| Laboratory Address | Building B, Tianji Industrial Park, No.30-9, Laiyin Road, Longgang District, Shenzhen, Guangdong, China |
| Laboratory Tel | 0755-84616666 / 400-0066-989 |
| Laboratory Email | [email protected] |
The test report covers two primary EMC disciplines:
- Conducted Emission (Section 3): Evaluates unwanted electrical signals conducted back onto the power supply lines from the EUT. Includes measurement uncertainty, emission limits, EUT setup, instrument setup, test procedure, equipment list, and test data across the relevant frequency range.
- Radiated Emission (Section 4): Evaluates electromagnetic energy radiated from the EUT into the surrounding environment. Includes measurement uncertainty, emission limits, EUT and receiver setup, test procedure, corrected amplitude and margin calculations, equipment list, and test data. Appendices A and B provide EUT and test setup photographs respectively.
Standards & Compliance
The Helios J1 was tested against the following regulatory standard to qualify for the FCC SDoC declaration in the United States market.
| Standard | Description | Applicability |
|---|---|---|
| FCC CFR 47 Part 15 Subpart B | Federal Communications Commission Rules — Unintentional Radiators, EMC requirements for conducted and radiated emissions | Primary test standard; Pass |
Key compliance aspects evaluated include:
- Conducted Emission Limits: Frequency-domain measurements of noise conducted onto power lines, compared against FCC Part 15 Subpart B limits for unintentional radiators.
- Radiated Emission Limits: Near- and far-field radiated emissions measured at a certified test site, compared against FCC Part 15 Subpart B radiated limits relevant to the product’s operating frequency range.
- Measurement Uncertainty: Documented for both conducted and radiated emission measurements in accordance with accepted metrology practice, ensuring result validity.
- Decision Rule: Applied per Section 2.6 of the report (Application of Decision Rule), ensuring pass/fail determinations account for measurement uncertainty in a consistent and transparent manner.
- Test Methodology: Follows the TRF form TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01 as the structured test procedure framework.
Validity & Certification Body
The test report WTH25H06163592R1E was issued on 2025-09-23 by Waltek Testing Group HCT (Shenzhen) Co., Ltd. As an FCC SDoC, the declaration of conformity is the legal responsibility of the applicant, Guangdong Bestek Technology Co., LTD, based on the passing test results provided by the accredited laboratory.
- Report Issue Date: 2025-09-23
- Testing Laboratory: Waltek Testing Group HCT (Shenzhen) Co., Ltd.
- Laboratory Website: http://www.hct-test.com
- Laboratory Address: Building B, Tianji Industrial Park, 1/F. & 2/F. & 3/F., No.30-9, Laiyin Road, Xinsheng Community, Longgang Subdistrict, Longgang District, Shenzhen, Guangdong, China
- Service Telephone: 400-0066-989
- Service Email: [email protected]
- Responsible Party (SDoC): Guangdong Bestek Technology Co., LTD
- Validity Note: FCC SDoC declarations remain valid as long as the product continues to be manufactured to the same design and configuration tested. Any design change that could affect EMC performance requires re-evaluation.
- Report Prepared By: Snow Zeng
- Report Approved By: Tony Wu
Frequently Asked Questions
- What does the FCC SDoC test result mean for the Helios J1?
- A passing result under FCC CFR 47 Part 15 Subpart B means the Helios J1 does not emit electromagnetic interference beyond the permitted limits for unintentional radiators. This confirms the product may be legally sold and used in the United States.
- Which tests were conducted for the Helios J1 FCC report?
- The report WTH25H06163592R1E covers two test disciplines: Conducted Emission testing (Section 3) and Radiated Emission testing (Section 4). Both were carried out at the Waltek Testing Group HCT (Shenzhen) laboratory between 2025-06-24 and 2025-06-26.
- Who is responsible for the FCC SDoC declaration of the Helios J1?
- Under the FCC SDoC framework, the responsible party is the applicant and manufacturer — Guangdong Bestek Technology Co., LTD — who issued the declaration based on passing test results from the accredited laboratory Waltek Testing Group HCT (Shenzhen) Co., Ltd.
- Does the FCC SDoC certification expire?
- FCC SDoC certification does not have a fixed expiry date, but it becomes invalid if the product’s design, components, or configuration are changed in a way that could affect electromagnetic emissions. Any such change requires a new round of EMC testing and a new declaration.
Related Documents
The following certification and compliance documents are typically associated with a portable automotive jump starter such as the Helios J1 and may be relevant for market access across different regions:
- UN 38.3: United Nations transport testing standard for lithium batteries — mandatory for air and sea freight of products containing lithium-ion cells.
- CE Declaration of Conformity (DoC): Required for sale in the European Economic Area, covering applicable directives such as the Low Voltage Directive (LVD) and EMC Directive.
- RoHS Compliance Report: Restriction of Hazardous Substances — confirms the product does not contain restricted hazardous materials above threshold levels.
- REACH SVHC Declaration: REACH regulation substance of very high concern (SVHC) declaration for EU chemical compliance.
- KC Certification: Korea Certification mark required for electrical and electronic products sold in South Korea.
- IEC 62133 Battery Safety Test Report: IEC standard for safety requirements of portable sealed secondary lithium cells and batteries.
- PSE Certification (Japan): Required for electrical products imported and sold in Japan under the Electrical Appliances and Materials Safety Act.
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