What does the FCC CFR 47 Part 15 Subpart B test confirm about the X5 PRO?

The test confirms that the X5 PRO Jump Starter with Air Compressor meets the FCC's electromagnetic emission limits for unintentional radiators. Both conducted emissions and radiated emissions were measured and found to be within the legally permitted limits, meaning the device will not cause harmful interference to other electronic equipment or licensed radio services when used in the United States.

What is report number WTH25H12334285E and why does it matter?

WTH25H12334285E is the unique reference number assigned to this FCC EMC test report by Waltek Testing Group HCT (Shenzhen) Co., Ltd. This number is used to identify and trace the specific test record, including all measurement data, equipment configurations, and photographic evidence, and serves as the primary document reference for regulatory submissions and US market authorisation.

Which testing laboratory conducted the FCC tests on the X5 PRO?

The tests were conducted by Waltek Testing Group HCT (Shenzhen) Co., Ltd., located in Longgang District, Shenzhen, Guangdong, China. The report was prepared by Snow Zeng and approved by Tony Wu. Testing was completed between 2025-12-16 and 2025-12-23, and the report was issued on 2025-12-31.

Does this FCC test result mean the X5 PRO can be sold in the United States?

A passing result on FCC CFR 47 Part 15 Subpart B testing is a prerequisite for lawful sale of electronic devices in the US market. With a confirmed Pass result on both conducted and radiated emission measurements, the X5 PRO satisfies the core FCC EMC requirement. The responsible party may use this report to support a Declaration of Conformity or FCC authorisation filing. Any subsequent modification to the product design that could affect emissions would require re-testing.

FCC EMC Test Report – ETENWOLF X5 PRO Jump Starter with Air Compressor | Report WTH25H12334285E

Document Overview

Document Overview This article summarizes the official FCC electromagnetic compatibility (EMC) test report issued for the ETENWOLF X5 PRO Jump Starter with Air Compressor. The document is a formal test report prepared in accordance with FCC CFR 47 Part 15 Subpart B, which governs unintentional…

Document type: Certification Report
Prepared by: Michelle Torres
Published: July 21, 2026
Last reviewed: July 21, 2026
Topics: North America: FCC / UL

Document Overview

This article summarizes the official FCC electromagnetic compatibility (EMC) test report issued for the ETENWOLF X5 PRO Jump Starter with Air Compressor. The document is a formal test report prepared in accordance with FCC CFR 47 Part 15 Subpart B, which governs unintentional radiators and sets limits for conducted and radiated electromagnetic emissions in the United States market.

Document Type: FCC EMC Test Report
Reference Number: WTH25H12334285E
Test Report Form Number: TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01
Internal Lab Reference: HCT/RF-23-21
Issuing Body: Waltek Testing Group HCT (Shenzhen) Co., Ltd.
Date of Issue: 2025-12-31
Overall Test Result: Pass
Scope: Conducted emission and radiated emission measurements on the Equipment Under Test (EUT) in its standard operating configuration

Product Information

The Equipment Under Test (EUT) evaluated in this report is the ETENWOLF X5 PRO, a Jump Starter with integrated Air Compressor developed and manufactured by Guangdong Bestek Technology Co., Ltd. This product is designed for automotive emergency starting and tire inflation applications.

Field	Details
Product Name	Jump Starter with Air Compressor
Model Number	X5 PRO
Trade Mark	N/A (filed under manufacturer)
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

The X5 PRO is classified as an unintentional radiator under FCC rules, meaning it is not designed to intentionally emit radio frequency energy but must still comply with emission limits to avoid interference with other electronic equipment and radio services.

Key Details

The test report covers two primary EMC measurement disciplines: conducted emission and radiated emission. Both were assessed against the limits defined in FCC CFR 47 Part 15 Subpart B. The following table summarises the key procedural and scheduling details of the testing program.

Parameter	Details
Reference Number	WTH25H12334285E
Test Specification	FCC CFR 47 Part 15 Subpart B
Date Sample Received	2025-12-15
Date of Testing	2025-12-16 to 2025-12-23
Date of Issue	2025-12-31
Conducted Emission Result	Pass
Radiated Emission Result	Pass
Overall Result	Pass

The test program included the following major technical sections as documented in the report’s table of contents:

Section 1 – General Information: Product description, test standards, test summary, methodology, facility details, and document version control.
Section 2 – System Test Configuration: Justification for test configuration, EUT exercise software, equipment modifications (none applied), basic test system configuration, description of auxiliary equipment, and application of the decision rule.
Section 3 – Conducted Emission: Measurement uncertainty analysis, emission limits, EUT and instrument setup, test procedures, test equipment list, and full test data tables.
Section 4 – Radiated Emission: Measurement uncertainty analysis, emission limits, EUT and receiver setup, test procedures, corrected amplitude and margin calculations, test equipment list, and full test data tables.
Appendix A: Photographs of the EUT (Equipment Under Test).
Appendix B: Photographs of the test setup.

The decision rule applied during evaluation determines pass/fail based on whether measured emission levels, inclusive of measurement uncertainty, remain within the prescribed FCC limits across all tested frequency ranges.

Standards & Compliance

The X5 PRO was tested and evaluated against the following regulatory framework and technical standards:

Standard / Regulation	Scope
FCC CFR 47 Part 15 Subpart B	Unintentional radiators — conducted and radiated emission limits for digital devices sold in the United States

FCC Part 15 Subpart B applies to any electronic device that, while not intended to emit radio frequency energy, may do so incidentally during normal operation. Compliance ensures the product does not cause harmful interference to licensed radio communications and other electronic systems.

Key compliance elements verified during this test program include:

Conducted Emissions: Measurement of RF noise conducted back onto the AC or DC power lines from the EUT, compared against Class B or applicable Class A limits depending on the intended use environment.
Radiated Emissions: Measurement of electromagnetic fields radiated from the EUT at a defined test distance, compared against frequency-dependent limits specified in the standard.
Measurement Uncertainty: All reported data accounts for laboratory measurement uncertainty, consistent with the requirements of the test report form TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01.
Test Report Form: TRF FCC CFR 47 Part 15 Subpart B-EMC-001-V01, confirming the structured format meets FCC Telecommunication Certification Body (TCB) requirements.

The successful completion of this testing enables the responsible party to apply the FCC Declaration of Conformity (DoC) or obtain an FCC ID, permitting lawful sale and import of the X5 PRO in the United States market.

Validity & Certification Body

This test report was prepared, reviewed, and issued by Waltek Testing Group HCT (Shenzhen) Co., Ltd., an accredited electromagnetic compatibility testing laboratory operating in Shenzhen, China.

Field	Details
Laboratory Name	Waltek Testing Group HCT (Shenzhen) Co., Ltd.
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
Telephone	0755-84616666
Service Hotline	400-0066-989
Email	[email protected]
Report Prepared By	Snow Zeng
Report Approved By	Tony Wu
Date of Issue	2025-12-31
Report Reference	WTH25H12334285E
Internal Lab Reference	HCT/RF-23-21
Total Pages	26

FCC test reports of this type do not carry an expiration date on the report document itself; however, the compliance authorisation derived from this report remains valid as long as the product’s design, components, and manufacturing processes remain unchanged. Any modification to the EUT that could affect its electromagnetic emissions would require re-testing. The report was issued on 2025-12-31 following testing conducted between 2025-12-16 and 2025-12-23.

Frequently Asked Questions

What does the FCC CFR 47 Part 15 Subpart B test confirm about the X5 PRO?: The test confirms that the X5 PRO Jump Starter with Air Compressor meets the FCC’s electromagnetic emission limits for unintentional radiators. Both conducted emissions (RF noise on power lines) and radiated emissions (electromagnetic fields in the surrounding environment) were measured and found to be within the legally permitted limits, meaning the device will not cause harmful interference to other electronic equipment or licensed radio services when used in the United States.
What is report number WTH25H12334285E and why does it matter?: WTH25H12334285E is the unique reference number assigned to this FCC EMC test report by the testing laboratory, Waltek Testing Group HCT (Shenzhen) Co., Ltd. This number is used to identify and trace the specific test record, including all measurement data, equipment configurations, and photographic evidence. It is the primary document reference for regulatory submissions and market authorisation in the United States.
Which testing laboratory conducted the FCC tests on the X5 PRO?: The tests were conducted by Waltek Testing Group HCT (Shenzhen) Co., Ltd., located in Longgang District, Shenzhen, Guangdong, China. The report was prepared by Snow Zeng and approved by Tony Wu. The laboratory’s internal report reference is HCT/RF-23-21, and the test was completed over the period 2025-12-16 to 2025-12-23 with the report issued on 2025-12-31.
Does this FCC test result mean the X5 PRO can be sold in the United States?: A passing result on FCC CFR 47 Part 15 Subpart B testing is a prerequisite for lawful sale of electronic devices in the US market. With a confirmed Pass result on both conducted and radiated emission measurements, the X5 PRO satisfies the core FCC EMC requirement. The responsible party may use this report to support a Declaration of Conformity or FCC authorisation filing. Note that if the product design is modified in any way that could affect emissions, re-testing would be required.