2BMVU-DGPB302Power Bank

* the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. SC6042008 U.S. Agent Designation for Service of Process - Certification Attestation Letter 3/26/2026 TO: Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2BMVU-DGPB302 FRN of applicant: 0036421725 Per section 2.911(d)(7) of the FCC rules, KOWIN CO., LIMITED FRN: 0036421725(“the applicant”) certifies that the equipment for which authorization is sought is designated to thefollowing U.S. agent* for service of process: Company Name: Global Product Services and Consultation LLC FCC Registration Number (FRN): 0033406703 Physical U.S. Company Address: 328 W Palm Ave. Monrovia, CA91016 Contact Person: Michael Chan Tel: +1 626 366 4358 Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed:Agent Signed (if different from Applicant): Signed: Printed name: Jack xiong Title: Manager Company Name: KOWIN CO., LIMITED Date: 3/26/2026 Signed: Printed name: Michael Chan Title: Technical Director Company Name: Global Product Services and Consultation LLC Date: 4/14/2026

KOWIN CO., LIMITED 2026-03-26 [ 飞 rofins Electncal and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (EUT Name: Power Banl<IModel: DG DGPB302, DGPB302BL /FCC ID: 2BMVU-DGPB302) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the {Block Diagram, Operational Description, Schematics} required to be submitted with this application be permanently withheld f r om public review. The above mate 「 ials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competito 「 S Please contact me if there is any information you may need. Sincerely, Jack xiong Manager 』吐kx弓 KOWIN CO., LIMITED 19H Maxgrand plaza, No.3 Tai Yau Street, San Po kong, Kowloon HongKong

External Photographs View of EUT-1 View of EUT-2 Page 2 of 4 View of EUT-3 View of EUT-4 Page 3 of 4 View of EUT-5 View of EUT-6 Page 4 of 4 View of EUT-7 View of EUT-8

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Internal Photographs Internal View of EUT-1 Internal View of EUT-2 Page 2 of 3 Internal View of EUT-3 Internal View of EUT-4 Antenna Page 3 of 3 Internal View of EUT-5

EUT Specification FCC ID: 2BMVU-DGPB302 Characteristics Description Product Name Power Bank Model number DGPB302 Series Model DGPB302BL Model Difference Note: Color only. Power Supply Battery Capacity: 5000mAh / 18.25Wh Energy conversion: ≥60% Rated capacity: 3000mAh(5V=2A) Type-C Input: 5V ⎓ 3A 9V ⎓ 2.22A 12V ⎓ 1.67A Type-C Output: 5V ⎓ 3A 9V ⎓ 2.22A 12V ⎓ 1.67A Wireless Output: 5W/7.5W/10W/15W Operating Frequency Range 113-205KHz for Wireless Output Modulation Technique ASK Antenna Type Coil Antenna Device category Portable (<20cm separation) Mobile (>20cm separation) Others ___ Antenna diversity Single antenna Multiple antennas Tx diversity Rx diversity Tx/Rx diversity Evaluation applied MPE Evaluation SAR Evaluation 2 / 10 Applicable Standard: FCC Part 1(1.1310), Part 2(2.1093) and KDB 680106 D01 Wireless Power Transfer v04 Applicable Requirement: Three different categories of transmitters are defined by the FCC in OET Bulletin 65. These categories are fixed installation, mobile, and portable and are defined as follows: Fixed Installations: fixed location means that the device, including its antenna, is physically secured at a permanent location and is not able to be easily moved to another location. Additionally, distance to humans from the antenna is maintained to at least 2 meters. Mobile Devices: a mobile device is defined as a transmitting device designed to be used in other than fixed locations and to be generally used in such a way that a separation distance of at least 20 centimeters is normally maintained between the transmitter's radiating structures and the body of the user or nearby persons. Transmitters designed to be used by consumers or workers that can be easily re-located, such as a wireless modem operating in a laptop computer, are considered mobile devices if they meet the 20 centimeter separation requirement. The FCC rules for evaluating mobile devices for RF compliance are found in 47 CFR ß2.1091. Portable Devices: a portable device is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Portable device requirements are found in Section 2.1093 of the FCC's Rules (47 CFRß2.1093). The FCC also categorizes the use of the device as based upon the user’s awareness and ability to exercise control over his or her exposure. The two categories defined are Occupational/ Controlled Exposure and General Population/Uncontrolled Exposure. These two categories are defined as follows: Occupational/controlled exposure limits apply in situations in which persons are exposed as a consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure. Limits for occupational/controlled exposure also apply in situations when a person is transient through a location where occupational/controlled limits apply provided he or she is made aware of the potential for exposure. The phrase fully aware in the context of applying these exposure limits means that an exposed person has received written and/or verbal information fully explaining the potential for RF exposure resulting from his or her employment. With the exception oftransient persons, this phrase also means that an exposed person has received appropriate training 3 / 10 regarding work practices relating to controlling or mitigating his or her exposure. Such training is not required for transient persons, but they must receive written and/or verbal information and notification (for example, using signs) concerning their exposure potential and appropriate means available to mitigate their exposure. The phrase exercise control means that an exposed person is allowed to and knows how to reduce or avoid exposure by administrative or engineering controls and work practices, such as use of personal protective equipment or time averaging of exposure. General population/uncontrolled exposure limits apply in situations in which the general public may be exposed, or in which persons who are exposed as a consequence of their employment may not be fully aware of the potential for exposure or cannot exercise control over their exposure. Licensees and applicants are responsible for compliance with both the occupational/controlled exposure limits and the general population/uncontrolled exposure limits as they apply to transmitters under their jurisdiction. Licensees and applicants should be aware that the occupational/controlled exposure limits apply especially in situations where workers may have access to areas in very close proximity to antennas and access to the general public may be restricted. In lieu of evaluation with the general population/uncontrolled exposure limits, amateur licensees authorized under part 97 of this chapter and members of his or her immediate household may be evaluated with respect to the occupational/controlled exposure limits in this section, provided appropriate training and information has been provided to the amateur licensee and members of his/her household. Other nearby persons who are not members of the amateur licensee's household must be evaluated with respect to the general population/uncontrolled exposure limits. Test Setup Block 4 / 10 Test Procedure 1.Connect the EUT and equipment as above diagram of test configuration. 2.EUT was placed on a table, and the measure probe was placed at a measurement distance of 20cm from the EUT to the center of the probe. 3.Power on the measuring probe, the EUT was set at the maximum field strength emission state. 4.The EUT was put in different directions (Left, Right, Front, Rear, Top and Bottom) toward to the measure probe. The distance from the top of the EUT to the probe is 20CM, and the distance from other directions is 20cm.Measure the value of field strength. 5.Record the worst data of the different directions. Measuring Device And Test Equipment Used Equipment Manufacturer Model No. Serial…

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Tianxi a Page 1 of 3 SPECIFICATION FOR APPROVAL Ke Hous ehold CUSTOMER: Pro duct Product Name: CUST P/N: Product Model: FINE P/N: TX-Wireless Charging Transmitter Coil Module Pro duct Pro duct Product Specifications DESC: TX43.5*0.5-10TS-0.25*4P-6.5UH-45MM Dat e Issue DATE: 2024/09/03 Ver sion Copy: Version: A.0 Shenzhen Tianxia Technology Co., Ltd. Address: Room 523, C33 Science and Technology Park, 33rd District, Bao'an District, Shenzhen 525 TEL：18718699959 E-mail：[email protected] Drafting PREPARED BY Review CHECKED BY Approval APPROVED BY Customer Approval CUSTOMER APPROVE Zeng Weihao Zhang Yan Luo Yongjun Tianxi a Page 2 of 3 Version Change History Version Change History Version Rev. Change Previous Before Change After Change After Change Change Date Change Date Approved Appr oved Approved By A.0 New Release ---- 2024/09/03 Luo Yongjun Tianxi a Page 3 of 3 SPECIFICATION Product Specifications DESC TX43.5*0.5-10TS-0.25*4P--- 6.5UH-45MM Version Rev 本 ：A.0 Customer CUST: Customer Part Number (CUST P/N): I. Dimensions: (mm) A 20.5±0.5 B 39±2 C 43.5±0.5 D 45±2 E 3±1 F 5.3±0.3 G 0.5±0.03 H 1.3MAX Note: 1. Coil is clockwise 2. Double-sided adhesive is applied to the back of the coil II. Schematic Diagram 3 . 8MM high-temperature adhesive applied to the wire exit point III. Winding Specification: IV. Electrical Characteristics: Temperature: 25±10°C, Humidity: 65±20% Prepared by / Date Reviewed by / Date Zeng Weihai 2024/09/03 Zhang Yan 2024/09/03 Serial Number NO. Terminal TERMINAL Wire Diameter WIRE Number of Turns Turns Winding Direction Winding Direction 1 S F 0.25*4P 10Ts CCW Serial Number NO. Item ITEM Terminal TERMINAL Standard SPECIFICATION Test Conditions TEST FREQUENCY Test Instruments TEST EQUIPMENTS 1 IND. S-F 2.8uH±10% Individual coil 100KHz/1.0V LCR METER 106X 2 IND. S-F 6.5uH±10% With magnetic sheet 100KHz/1.0V LCR METER 106X 3 DCR S-F 150mΩ Max 100KHz/1.0V LCR METER 106X Tianxi a Page 3 of 3 V. Bill of Materials VI. Packaging: Pearl cotton 320*210*65mm Carton 345*245*245mm The above pictures are for reference only, the actual packaging shall prevail! Prepared by / Date Reviewed by / Date Zeng Weihai 2024/09/3 Zhang Yan 2024/9/3 Serial Number Product Name Material Specifications Supplier Remarks 1 Magnetic Sheet 43.5*5.3*0.5T Dual-slot Hard Magnetite Ferrite 2 Copper Wire 0.25*4P Enameled Wire 3 High Temperature Adhesive 8MM Environmentally Friendly Tape 4 Glue 42 Round White Glue Environmentally Friendly Double-Sided Adhesive 5 Tin 107H Thousand Island Environmentally Friendly Tin 6 Glue White Surface Adhesive Environmentally Friendly Glue

TRF No.: 04-E001-0B TRF Originator: GTG TRF Date: 2023-12-13 Web: www.gtggroup.com E-mail: [email protected] Tel.: 86-400 755 8988 CFR 47 FCC PART 15 SUBPART C TEST REPORT For Power Bank MODEL NUMBER: DGPB302, DGPB302BL REPORT NUMBER: E04A26010536F00501 ISSUE DATE: February 6, 2026 FCC ID: 2BMVU-DGPB302 Prepared for KOWIN CO., LIMITED 19H Maxgrand plaza, No.3 Tai Yau Street, San Po kong, Kowloon HongKong Prepared by Guangdong Global Testing Technology Co., Ltd. Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 This report is based on a single evaluation of the submitted sample(s) of the above mentioned product, it does not imply an assessment of the production of the products. This report shall not be reproduced, except in full, without the written approval of Guangdong Global Testing Technology Co., Ltd. REPORT NO.: E04A26010536F00501 Page 2 of 26 TRF No.: 04-E001-0B Global Testing , Great Quality. Revision History Rev. Issue Date Revisions Revised By V0 February 6, 2026 Initial Issue REPORT NO.: E04A26010536F00501 Page 3 of 26 TRF No.: 04-E001-0B Global Testing , Great Quality. Summary of Test Results Test Item Limit/Requirement Result Antenna Requirement FCC Part 15.203 Pass AC Power Line Conducted Emission FCC Part 15.207 Pass 20dB Bandwidth FCC Part 15.215 Pass Radiated Emission FCC Part 15.205/15.209 Pass *This test report is only published to and used by the applicant, and it is not for evidence purpose in China. *The measurement result for the sample received is <Pass> according to <CFR 47 FCC PART 15 SUBPART C> when <Accuracy Method> decision rule is applied. REPORT NO.: E04A26010536F00501 Page 4 of 26 TRF No.: 04-E001-0B Global Testing , Great Quality. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 5 2. TEST METHODOLOGY ......................................................................................................... 6 3. FACILITIES AND ACCREDITATION ..................................................................................... 6 4. CALIBRATION AND UNCERTAINTY ................................................................................... 7 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 7 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 7 5. EQUIPMENT UNDER TEST .................................................................................................. 8 5.1. DESCRIPTION OF EUT ........................................................................................... 8 5.2. TEST MODE ............................................................................................................. 8 5.3. SUPPORT UNITS FOR SYSTEM TEST ................................................................... 8 5.4. SETUP DIAGRAM .................................................................................................... 9 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 10 7. RADIATED TEST RESULTS ............................................................................................... 11 7.1. Radiated Spurious Emission ................................................................................... 15 8. AC POWER LINE CONDUCTED EMISSION ...................................................................... 21 9. 20DB BANDWIDTH ............................................................................................................. 24 10. ANTENNA REQUIREMENT ................................................................................... 26 REPORT NO.: E04A26010536F00501 Page 5 of 26 TRF No.: 04-E001-0B Global Testing , Great Quality. 1. ATTESTATION OF TEST RESULTS Applicant Information Company Name: KOWIN CO., LIMITED Address: 19H Maxgrand plaza, No.3 Tai Yau Street, San Po kong, Kowloon HongKong Manufacturer Information Company Name: KOWIN CO., LIMITED Address: 19H Maxgrand plaza, No.3 Tai Yau Street, San Po kong, Kowloon HongKong EUT Information Product Description: Power Bank Model: DGPB302 Series Model: DGPB302BL Brand: / Sample Received Date: January 31, 2026 Sample Status: Normal Sample ID: A26010536 004 Date of Tested: January 31, 2026 to February 6, 2026 APPLICABLE STANDARDS STANDARD TEST RESULTS CFR 47 FCC PART 15 SUBPART C Pass Prepared By: Checked By: Win Huang Alan He Project Engineer Laboratory Leader Approved By: Shawn Wen Laboratory Manager REPORT NO.: E04A26010536F00501 Page 6 of 26 TRF No.: 04-E001-0B Global Testing , Great Quality. 2. TEST METHODOLOGY All tests were performed in accordance with the standard CFR 47 FCC PART 15 SUBPART C 3. FACILITIES AND ACCREDITATION Accreditation Certificate A2LA (Certificate No.: 6947.01) Guangdong Global Testing Technology Co., Ltd. has been assessed and proved to be in compliance with A2LA. FCC (FCC Designation No.: CN1343) Guangdong Global Testing Technology Co., Ltd. has been recognized to perform compliance testing on equipment subject to Supplier's Declaration of Conformity (SDoC) and Certification rules ISED (Company No.: 30714) Guangdong Global Testing Technology Co., Ltd. has been registered and fully described in a report filed with ISED. The Company Number is 30714 and the test lab Conformity Assessment Body Identifier (CABID) is CN0148. Note: All tests measurement facilities use to collect the measurement data are located at Room 101-105, 203-210, Building 1, No.2, Keji 8 Road, Songshan Lake Park, Dongguan city, Guangdong, People’s Republic of China, 523808 REPORT NO.: E04A26010536F00501 Page 7 of 26 TRF No.: 04-E001-0B Global Testing , Great Quality. 4. CALIBRATION AND UNCERTAINTY 4.1. MEASURING INSTRUMENT CALIBRATION The measuring equipment utilized to perform the tests documented in this report has been calibrated in accordance with the manufacturer's recomme…

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Setup Photographs AC Power Line Conducted Emission Radiated Spurious Emission Page 2 of 2 RF Exposure Evaluation