2BVSS-SQ50Power Bank

Any changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.

STRONGGes.m.b.H Teinfaltstrasse8/4Wien,Wien,1010Austria FederalCommunicationsCommission AuthorizationandEvaluationDivision EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MD21046 Date ：June26,2026 U.S.AgentDesignation {STRONGGes.m.b.H}acknowledgestheirconsentforthefollowingcontactlocatedintheUnitedStatestoactas theiragentforserviceofprocessfortheequipmentforwhichauthorizationissought(FCCID:2BVSS-SQ50): NameandcompanyofU.S.agent:BridgeportAdvisoryLLC PhysicalU.S.addressofagent:3330W38THPL,CHICAGO,IL60632,UnitedStates FRNofU.S.agent:0037566148 EmailaddressofU.S.agent:[email protected] ContactNO.:(708)680-6688 BridgeportAdvisoryLLCacknowledgestheirobligationtoacceptserviceofprocessonbehalfof{STRONG Ges.m.b.H}. {STRONGGes.m.b.H}withtheFRN[0038334967]acceptsitsobligationtomaintainanagentforserviceofprocess intheUnitedStatesfornolessthanoneyearaftereitherthegranteehaspermanentlyterminatedallmarketingand importationoftheapplicableequipmentwithintheU.S.,ortheconclusionofanyCommission-relatedadministrative orjudicialproceedinginvolvingtheequipment,whicheverislater. Bysigningthisform,weconfirmtheaboveandthatweareawareoftheapplicationrequirementslistedunder§ 2.911(d)(7). TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB 986446D01. Anexpirationdateforthisletterdoesnotexist.IncasetheU.S.agentchanges,thegranteeisobligatedtonotify theFCCwithin30daysviathegrantingTCB. Sincerely, Signature ShiLeHuang SeniorProductCertificationEngineer STRONGGes.m.b.H Signature MrYongLiu ManagingMember BridgeportAdvisoryLLC 4 8 _ [ m o d e l ] U S _ A g e n t _ 2 . 9 1 1 ( d ) ( 7 ) - U , V 0 5

Covered Equipment Attestation Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BVSS-SQ50 ST-SQ50 We, Applicant Company Name: STRONG Ges.m.b.H Address: Teinfaltstrasse 8/4 Wien, Wien 1010, Austria Phone: +86-13510167929 certify that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. This includes the cybersecurity and anti-virus software produced or provided by Kaspersky Lab, Inc. or any of ist successors and assignees. We certify that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2026-06-26 Signature Date Name / Title: Shile Huang / Senior Product Certification Engineer Company: STRONG Ges.m.b.H Address: Teinfaltstrasse 8/4 Wien, Wien 1010, Austria Phone: +86-13510167929 Fax: N/A E-Mail: [email protected]

Due Diligence Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern FCC ID Model name 2BVSS-SQ50 ST-SQ50 Pursuant to KDB 986446 D01 Covered Equipment Guidance the evaluation of the product above shows compliance for the following reasons: Compliance Evaluation process Results Inherent compliance The chipset(s) used is not capable of running the cybersecurity and/or anti-virus software Compliance The memory used does not allow the running the cybersecurity and/or anti-virus software Compliance The storage capacity does not allow the running the cybersecurity and/or anti-virus software Compliance The operating system used is not capable of running the cybersecurity and/or anti-virus software Compliance No inherent compliance Based on software bill of material Based on scan for running software on the device Based on filesystem scan for cybersecurity and/or anti-virus software The equipment for which authorization is sought complies with the rules and fulfils the requirements as detailed in the above mentioned KDB. Evaluation performed by Company Name: Shenzhen Huaxia Testing Technology Co., Ltd Contact Name: Yoyo Zhou Address: 1F., Block A of Tongsheng Technology Building, Huahui Road, Dalang Street, Longhua District, Shenzhen, China Phone: +86-755-26648642 Email: [email protected] Signature: Date: 2026-06-16

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name 2BVSS-SQ50 ST-SQ50 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics • the Part List • the Tune up Information The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2026-06-26 Signature Date Name / Title: Shile Huang / Senior Product Certification Engineer Company: STRONG Ges.m.b.H Address: Teinfaltstrasse 8/4 Wien, Wien 1010, Austria Phone: +86-13510167929 Fax: N/A E-Mail: [email protected]

Externalphotos FCC ID: 2BVSS-SQ50

Size：46X33mm

Internalphotos FCC ID: 2BVSS-SQ50 Antenna

SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD 102A,102B,Building2,ShanghenglangNewIndustrialZone,ShanghenglangCommunity, DalangStreet,LonghuaDistrict,Shenzhen,Guangdong,People’sRepublicofChina,518000 Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V06 ReportTemplateRevisionDate:2026-01-30 RFExposureEvaluationReport Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonlytothesample(s) tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.: CQASZ20260400768E-02 Applicant:STRONGGes.m.b.H Addressof Applicant: Teinfaltstrasse8/4Wien,Wien,1010Austria EquipmentUnderTest(EUT): Product:PowerBank ModelNo.:ST-SQ50 TestModelNo.:ST-SQ50 BrandName: FCCID: 2BVSS-SQ50 Standards:47CFRPart1.130747CFRPart1.1310 KDB680106D01RFExposureWirelessChargingBaseAppv04r01 DateofReceipt:2026-4-14 DateofTest:2026-4-14to2026-4-21 DateofIssue: 2026-6-16 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove TestedBy: (JoeWang) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400768E-02 Page:2of12 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20260400768E-02Rev.01 Initialreport 2026-6-16 SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400768E-02 Page:3of12 2Contents Page 1VERSION............................................................................................................................................................................2 2CONTENTS........................................................................................................................................................................3 ..................................................................................................................................................................................................3 3GENERALINFORMATION..............................................................................................................................................4 3.1CLIENTINFORMATION...................................................................................................................................................4 3.2GENERALDESCRIPTIONOFEUT...................................................................................................................................4 3.3PRODUCTSPECIFICATIONSUBJECTIVETOTHISSTANDARD...........................................................................................4 3.4TESTENVIRONMENT......................................................................................................................................................5 3.5DESCRIPTIONOFSUPPORTUNITS..................................................................................................................................5 3.6TESTLOCATION.............................................................................................................................................................6 3.7TESTFACILITY...............................................................................................................................................................6 3.8EQUIPMENTLIST............................................................................................................................................................6 3.9TESTSOFTWARE............................................................................................................................................................7 4RFEXPOSUREEVALUATION.......................................................................................................................................8 4.1RFEXPOSURECOMPLIANCEREQUIREMENT.................................................................................................................8 4.1.1Limits....................................................................................................................................................................8 4.1.2TestProcedure...................................................................................................................................................8 4.1.3TestSetup.........................................................................................................................................................10 4.1.4TestResults......................................................................................................................................................10 APPENDIXA:PHOTOGRAPHSOFTESTSETUP.....................................................................................................12 SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400768E-02 Page:4of12 3GeneralInformation 3.1ClientInformation Applicant: STRONGGes.m.b.H AddressofApplicant:Teinfaltstrasse8/4Wien,Wien,1010Austria Manufacturer:STRONGGes.m.b.H AddressofManufacturer:Teinfaltstrasse8/4Wien,Wien,1010Austria Factory:ShenzhenSkyworthDigitalTechnologyCo.,LTD.BaoanFactory AddressofFactory:2-5F,IntegrationMulti- StoriedBuilding,SkyworthScienceandTechnologyIndustrialPark, TangtouIndustrialZone,ShiyanStreet,BaoanDistrict,Shenzhencity,China. 3.2GeneralDescriptionofEUT ProductName: PowerBank ModelNo.: ST-SQ50 TestModelNo.: ST-SQ50 BrandName: SoftwareVersion: V1.0 HardwareVersion: V1.0 EUTPowerSupply: ChargingbyAdapter:DC5V⎓3.0A/9V⎓2.0A Battery:5000mAh(19.25Wh/3.85V) 3.3ProductSpecificationsubjectivetothisstandard EquipmentCategory:Non-ISMfrequency OperationFrequencyrange:115kHz~205kHz,360KHz ModulationType:ASK AntennaType:Inductioncoil AntennaGain:0dBi Note: 1.Insection15.31(m),regardstotheoperatingfrequencyrangeless1MHz. SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400768E-02 Page:5of12 3.4TestEnvironment OperatingEnvironment: Temperature: 25.5  C Humidity:53%RH AtmosphericPressure:99.5Kpa TestMode: Modea:KeeptheEUTWirelessOutPut5W Modeb:K…

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Shenzhen Chenxing Electronic Technology Co., Ltd 产品规格书 PRODUCTSPECIFICATIONFORAPPROVA Company Name：Shenzhen Chenxing Electronic Technology Co., Ltd Address:5th Floor, Building 1, Xinkecheng Technology Industrial Park, No. 51 Dabao Road, Xin'an Street, Bao'an District, Shenzhen 1 L 客户名称： CUSTOMER 产品名称： PRODUCTNAME Pilot 物料编码： PARTNo A11 . 0403003-0014 产品规格： PRODUCTSPEC Sensitivity specification：8.1uH±10% Magnetic specifications：42.45*0.4 Wire specifications：0.08*65*11Ts（21. 7mm） Length of outgoing line：43mm 日期： DATE 版本型号： VERSIO 2025.06.03 N REV1.0 版本 Revision 变更内容 ModifiedContent 责任人 Principle 日期 Date 备注 Note REV1.0First release2025-06-0Zhou Xiaoju3 制定/PREPAREDBY审核/CHECKEDBY核准/APPROVEDBY 李小云 Zhou Xiaoju 客户认可签名及盖章 Authorizedsignature& companychop Shenzhen Chenxing Electronic Technology Co., Ltd 产品规 Company Name：Shenzhen Chenxing Electronic Technology Co., Ltd 2 格 SPECIFICATION 一、Product dimensions diameter A outer diameter 42.4±0.5mm B inner diameter 40±1.5mm C thickness 21.7±0.5mm D Line length <1.4mm E 3±2mSolder length 43mm±3mm Fm 5±0.3m Magnetic opening diameter G m 0.5±0.05m Magnetic thickness m Magnetic disk shape Circular double groove Adhesive thickness Ordinary double-sided adhesive tape on both sides N/ Shattered black film A 反面双面胶 正面双面胶 We statement that All measurements were performed radiated and therefore additional antenna gain documentation is not required. Company Name：Shenzhen Chenxing Electronic Technology Co., Ltd 二、 3 schematic diagram 端子 TERMINA 三、Winding parameters L 线径 WIRE 圈数 Turns 绕线方向 WindingDirection SF 0.08*65P Double stranded and winding CC11TsW 温度TEMPERATURE:25±10°C,湿度RELATIVEHUMIDITY:65±20 四、Electrical Characteristics： % 项目 ITEM 端子 TERMINAL 标准 SPECIFICATION 测试条件 TESTFREQUENCY 测试仪器 TESTEQUIPMENTS IND.S-F100KHz/1.0 L ：8.1 uH±10% VLCZMETER1062B 五、Product physical image： Shenzhen Chenxing Electronic Technology Co., Ltd

SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD 102A,102B,Building2,ShanghenglangNewIndustrialZone,ShanghenglangCommunity, DalangStreet,LonghuaDistrict,Shenzhen,Guangdong,People’sRepublicofChina,518000 Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V06 ReportTemplateRevisionDate:2026-01-30 TestReport Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonly tothesample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20260400768E-01 Applicant: STRONGGes.m.b.H AddressofApplicant:Teinfaltstrasse8/4Wien,Wien,1010Austria EquipmentUnderTest(EUT): Product:PowerBank ModelNo.:ST-SQ50 TestModelNo.:ST-SQ50 BrandName: FCCID: 2BVSS-SQ50 Standards:47CFRPart15,SubpartC DateofReceipt:2026-4-14 DateofTest:2026-4-14to2026-4-21 DateofIssue: 2026-6-16 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove TestedBy: (JoeWang) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400768E-01 Page: 2 of 36 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20260400768E-01Rev.01 Initialreport 2026-6-16 SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400768E-01 Page: 3 of 36 2TestSummary TestItemTestRequirementTestmethodResult AntennaRequirement 47CFRPart15,SubpartCSection 15.203 ANSIC63.102020PASS ACPowerLine Conducted Emission 47CFRPart15,SubpartCSection 15.207 ANSIC63.102020PASS 20dBOccupied Bandwidth 47CFRPart15,SubpartCSection 15.215 ANSIC63.102020PASS RadiatedEmission, RadiatedSpurious Emissions 47CFRPart15,SubpartCSection 15.209 ANSIC63.102020PASS SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400768E-01 Page: 4 of 36 3Contents Page 1VERSION..........................................................................................................................................................................2 2TESTSUMMARY............................................................................................................................................................3 3CONTENTS......................................................................................................................................................................4 4GENERALINFORMATION...........................................................................................................................................5 4.1CLIENTINFORMATION.................................................................................................................................................5 4.2GENERALDESCRIPTIONOFEUT.................................................................................................................................5 4.3PRODUCTSPECIFICATIONSUBJECTIVETOTHISSTANDARD........................................................................................5 4.4TESTENVIRONMENT...................................................................................................................................................6 4.5DESCRIPTIONOFSUPPORTUNITS...............................................................................................................................6 4.6STATEMENTOFTHEMEASUREMENTUNCERTAINTY....................................................................................................7 4.7TESTLOCATION..........................................................................................................................................................7 4.8TESTFACILITY............................................................................................................................................................7 4.9DEVIATIONFROMSTANDARDS....................................................................................................................................7 4.10OTHERINFORMATIONREQUESTEDBYTHECUSTOMER............................................................................................7 4.11EQUIPMENTLIST.......................................................................................................................................................8 5TESTRESULTSANDMEASUREMENTDATA.......................................................................................................9 5.1ANTENNAREQUIREMENT............................................................................................................................................9 5.2CONDUCTEDEMISSIONS............................................................................................................................................10 5.320DBOCCUPYBANDWIDTH......................................................................................................................................13 5.4RADIATEDSPURIOUSEMISSION&RESTRICTEDBANDS...........................................................................................16 5.4.1SpuriousEmissions......................................................................................................................................16 6PHOTOGRAPHS-EUTTESTSETUP.....................................................................................................................25 6.1RADIATEDEMISSION.................................................................................................................................................25 6.2CONDUCTEDEMISSION..............................................................................................................................................29 7PHOTOGRAPHS-EUTCONSTRUCTIONALDETAILS......................................................................................30 SHENZHENHUAXIATESTINGTECHNOLOGYCO.,LTD ReportNo.:CQASZ20260400768E-01 Page: 5 of 36 4GeneralInformation 4.1ClientInformation Applicant:STRONGGes.m.b.H AddressofApplicant:Teinfaltstrasse8/4Wien,Wien,1010Austria Manufacturer:STRONGGes.m.b.H AddressofManufactur…

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Setupphotos 1Photographs-EUTTestSetup 1.1RadiatedEmission 9kHz~30MHz: DC FCC ID: 2BVSS-SQ50 AC 30MHz~1GHz: AC DC 1.2 ConductedEmission APPENDIXA:PHOTOGRAPHSOFTESTSETUP DC AC