2A2P9-AP306Wireless Module

EcoFlowInc. Date:10/14/2025 FederalCommunicationsCommissions AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 RE:CFR47§2.911(d)(5)Attestation FCCID:2A2P9-AP306 GranteeFRN:0031193519 1.EcoFlowInc.certifiesthattheequipmentforwhichauthorizationissoughtisnot“covered” equipmentprohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules. 2.EcoFlowInc.certifiesthat,thedevicedoesnothavecybersecurityand/oranti-virus softwareproducedorprovidedbyKasperskyLab,Inc.oranyofitssuccessorsand assignees,identifiedontheCoveredListinstalledonthedevice,norwillitbeinstalled bytheapplicantanytimeaftercertification. 3.EcoFlowInc.certifiesthat,asofthedateofthefilingoftheapplication,theapplicantis notidentifiedontheCoveredListasanentityproducing“covered”equipmentandis notanaffiliateorsubsidiaryofanentityidentifiedontheCoveredList. Sincerelyyours, Name:VickyGuan JobTitle:Engineer CompanyName:EcoFlowInc.

EcoFlowTechnologyInc Date:7/21/2025 FederalCommunicationsCommissions AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 RE:CFR47§2.911(d)(7)FCCUSAgentLetterofAttestation GranteeCode:2A2P9 GranteeFRN:0031193519 Towhomitmayconcern: FCCUSAgent AgentCompanyName:EcoFlowTechnologyInc FCCFRN:0033593781 AgentContactName:YvonneZhou AgentUSAddress:1687114thAveSEsuite101Bellevue,WA98004UnitedStates AgentEmailAddress:[email protected] ThisletteristoconfirmthatwehaveacceptedtheresponsibilitytoactasUSAgentonbehalf ofEcoFlowInc.fortheabovereferencedFCCGranteeCode. Weareawareoftherequirementsandresponsibilitiesoftheapplicant’sagentforserviceof processasoutlinedintheFCCsection2.911(d)(7)andReportandOrderFCC22-84 paragraph63. Sincerely, Signature AuthorizedAgentContactPersonName:YvonneZhou AgentcontactJobTitle:EMCEngineer AgentCompanyname:EcoFlowTechnologyInc

EcoFlow Inc. Date: 1/20/2025 Federal Communications Commissions Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 RE: CFR 47 §2.911 (d)(7) Agent Designation Attestation Grantee Code: 2A2P9 Grantee FRN: 0031193519 EcoFlow Inc.as required by section 2.911(d)(7), designates the following agent, located in the United States, for purposes of acting as the applicant’s agent for service of process. The applicant acknowledges that they will 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. The applicant further acknowledges their responsibility under CFR 47 §2.929(c) to inform the FCC whenever the agent information changes. U.S. Agent Information: Contact Person: Yvonne Zhou Company Name: EcoFlow Technology Inc Company Address: 1687 114th Ave SE suite 101 Bellevue, WA 98004 United States FCC FRN: 0033593781 Phone: (415) 691-9443 Email: [email protected] Sincerely yours, Name: Vicky Guan Job Title: Engineer Company Name: EcoFlow Inc.

EcoFlowInc. Date:10/14/2025 ULVerificationServicesInc. 47173BeniciaStreet Fremont,CA94538,USA Towhomitmayconcern: I,theundersigned,herebyauthorizeULVerificationServicesInc.toactonourbehalfinall mannersrelatingtoapplicationforequipmentauthorization,includingsigningofalldocuments relatingtothesematters.AnyandallactscarriedoutbyULVerificationServicesInc.onour behalfshallhavethesameeffectasactsofourown. I,theundersigned,herebycertifythatwearenotsubjecttoadenialoffederalbenefits,that includesFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988,21U.S.C.§ 862becauseofaconvictionforpossessionordistributionofacontrolledsubstance. InauthorizingULVerificationServicesInc.asourrepresentative,westillrecognizethatweare responsibleto: a)fulfilltherequirementsforthescopeofcertificationrequested,includingimplementingany appropriatechangesrequestedbyULVerificationServicesTelecommunications CertificationBody(TCB)and/ortheFCC; b)supplyanyandallinformationneededfortheevaluationoftheproductsforwhich certificationissought; c)makeclaimsregardingcertificationonlyinrespectofthescopeforwhichcertificationhas beengranted; d)notuseourproductcertificationinsuchamannerastobringtheTCBorFCCinto disreputeandtonotmakeanystatementregardingproductcertificationwhichtheTCBor FCCmayconsidermisleadingorunauthorized; e)discontinueuseofalladvertisingmatterthatcontainsanyreferencetheretoandcomplies withanyandallactionsrequiredbytheFCCuponsuspensionorcancellationof certification; f)usecertificationonlytoindicatethatproductsarecertifiedinconformitywithspecified standards; g)endeavortoensurethatnocertificateorreportoranypartthereofisusedinamisleading manner,andanycopiesofthegrants/certificatesshallbereproducedintheirentirety; h)complywiththerequirementsoftheTCBandFCC,includingtheuseofmarksandlabel informationprescribedforthescopeofcertification,whenmakingreferencetoproduct certificationincommunicationmediasuchasdocuments,brochureoradvertisements; i)complywiththerequirementsforcertification,supplyanyinformationneededfor evaluationofproductstobecertifiedand,whereapplicable,makeprovisionforthe participationofobservers; j)ensurethatproductsmarketedunderthescopeoftherequestedcertificationcontinueto complywiththecertificationrequirements; k)provideasampleofaproductionunitfortestingwithin30daysoftherequestshouldthis productbeselectedaspartofeithertheTCB’sortheFCC’smarketsurveillance requirements; l)keeparecordofallcomplaintsrelatingtoproduct’scompliancewithrequirementsof relevantstandard;makerecordsavailabletoULorFCCwhenrequested;takeappropriate actionwithrespecttosuchcomplaintsandanydeficienciesfoundintheproductthataffect compliancewithrequirementsforcertification;documenttheactionstakenwithrespectto complaintsand/ordeficiencies; m)informtheTCBimmediatelyofanychangesthatmayaffectitsabilitytocomplywiththe certificationrequirements. Thisauthorizationisvaliduntilfurtherwrittennoticefromtheapplicant/specifydate. SincerelyYours, CompanyName:EcoFlowInc. ContactName:VickyGuan TitleofPerson:Engineer Address:RM401,Plant#1,RunhengIndustrialZone,FuhaiStreet,Bao'anDistrict,Shenzhen,518000, China

ShEcoFlow Inc. DATE : 2025-10-14 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Request for Short-Term Confidentiality Company name: EcoFlow Inc. FCC ID: 2A2P9-AP306 FCC Part 15 Certification Pursuant to Sections 0.457 and 0.459 of the commission rules, and in accordance with the FCC Public notice dated June 15, 2004 (DA 04-1705), we hereby request short-term confidentiality for the following items prior to marketing the device.: (1)Test Setup Photos (2)External Photos (3)Internal Photos (4)User Manual (5)Antenna Report1(RE306-SHP32)_PCB_Appendix A (6)Antenna Report2(RE306-SHP32)_PCB_Appendix A (7)Antenna Report3(RE305-External Antenna )_Appendix A The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Sincerely, Signature Company Name: EcoFlow Inc. Contact Name: Vicky Guan Title of Person: Engineer Address: RM 401,Plant #1, Runheng Industrial Zone, Fuhai Street, Bao'an District, Shenzhen, 518000, China

ShEcoFlowInc. FederalCommunicationsCommission 7435OaklandMillsRoad ColumbiaMD21046 Subject:RequestforConfidentiality FCCID:2A2P9-AP306 ToWhomItMayConcern: PursuanttotheprovisionsofSections0.457and0.459oftheCommission’srules(47CFR§§ 0.457,0.459),wearerequestingtheCommissiontowithholdthefollowingattachmentsas confidentialdocumentfrompublicdisclosureindefinitely. SchematicDiagram BlockDiagram TheoryofOperation Abovementioneddocumentcontainsdetailedsystemandequipmentdescriptionareconsidered asproprietaryinformationinoperationoftheequipment.Thepublicdisclosureofabove documentsmightbeharmfultoourcompanyandwouldgivecompetitoranunfairadvantagein themarket. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatandcorrespondent duringcertificationreviewprocesscannotbegrantedasconfidentialdocumentsandthose informationwillbeavailableforpublicreviewoncethegrantofequipmentauthorizationis issued. BestRegards CompanyName:EcoFlowInc. ContactName:VickyGuan TitleofPerson:Engineer Address:RM401,Plant#1,RunhengIndustrialZone,FuhaiStreet,Bao'anDistrict,Shenzhen, 518000,China Date:10/14/2025

ModularApprovalRequestFCC(Per15.212)FCCID:2A2P9-AP306 Itemstobecovered AnswerFrom Applicant 1.Theradioelementsofthemodulartransmittermusthavetheirown shielding.Thephysicalcrystalandtuningcapacitorsmaybelocated externaltotheshieldedradioelements. YesTheEUTmodule doescontainits shield 2.Themodulartransmittermusthavebufferedmodulation/datainputs (ifsuchinputsareprovided)toensurethatthemodulewillcomplywith part15requirementsunderconditionsofexcessivedataratesorover- modulation. YesThemodule’s transmitterchip utilizesbuffered datainputs. 3.Themodulartransmittermusthaveitsownpowersupplyregulation. YesThemodule containsitsown powersupply regulatorchip. 4.Themodulartransmittermustcomplywiththeantennaand transmissionsystemrequirementsof§§15.203,15.204(b)and15.204(c). Theantennamusteitherbepermanentlyattachedoremploya “unique”antennacoupler(atallconnectionsbetweenthemoduleand theantenna,includingthecable).The“professionalinstallation” provisionof§15.203isnotapplicabletomodulesbutcanapplyto limitedmodularapprovalsunderparagraph(b)ofthissection. YesPleaserefertothe Operation Description. 5.Themodulartransmittermustbetestedinastand-alone configuration,i.e.,themodulemustnotbeinsideanotherdevice duringtestingforcompliancewithpart15requirements.Unlessthe transmittermodulewillbebatterypowered,itmustcomplywiththeAC lineconductedrequirementsfoundin§15.207.ACorDCpowerlines anddatainput/outputlinesconnectedtothemodulemustnotcontain ferrites,unlesstheywillbemarketedwiththemodule(see§15.27(a)). Thelengthoftheselinesshallbethelengthtypicalofactualuseor,if thatlengthisunknown,atleast10centimeterstoinsurethatthereis nocouplingbetweenthecaseofthemoduleandsupporting equipment.Anyaccessories,peripherals,orsupportequipment connectedtothemoduleduringtestingshallbeunmodifiedand commerciallyavailable(see§15.31(i)). YesPleaserefertothe testreports. 6.Themodulartransmittermustbeequippedwitheitherapermanently affixedlabelormustbecapableofelectronicallydisplayingitsFCC identificationnumber. (A)Ifusingapermanentlyaffixedlabel,themodulartransmitter mustbelabeledwithitsownFCCidentificationnumber,and,if theFCCidentificationnumberisnotvisiblewhenthemoduleis installedinsideanotherdevice,thentheoutsideofthedevice intowhichthemoduleisinstalledmustalsodisplayalabel referringtotheenclosedmodule.Thisexteriorlabelcanuse YesPleasereferto Labeland location/User manual. wordingsuchasthefollowing:“ContainsTransmitterModule FCCID:XYZMODEL1”or“ContainsFCCID:XYZMODEL1.”Any similarwordingthatexpressesthesamemeaningmaybeused. TheGranteemayeitherprovidesuchalabel,anexampleof whichmustbeincludedintheapplicationforequipment authorization,or,mustprovideadequateinstructionsalong withthemodulewhichexplainthisrequirement.Inthelatter case,acopyoftheseinstructionsmustbeincludedinthe applicationforequipmentauthorization. (B)Ifthemodulartransmitterusesanelectronicdisplayofthe FCCidentificationnumber,theinformationmustbereadily accessibleandvisibleonthemodulartransmitteroronthe deviceinwhichitisinstalled.Ifthemoduleisinstalledinside anotherdevice,thentheoutsideofthedeviceintowhichthe moduleisinstalledmustdisplayalabelreferringtothe enclosedmodule.Thisexteriorlabelcanusewordingsuchas thefollowing:“ContainsFCCcertifiedtransmittermodule(s).” Anysimilarwordingthatexpressesthesamemeaningmaybe used.Theusermanualmustincludeinstructionsonhowto accesstheelectronicdisplay.Acopyoftheseinstructionsmust beincludedintheapplicationforequipmentauthorization. 7.Themodulartransmittermustcomplywithanyspecificrulesor operatingrequirementsthatordinarilyapplytoacompletetransmitter andthemanufacturermustprovideadequateinstructionsalongwith themoduletoexplainanysuchrequirements.Acopyofthese instructionsmustbeincludedintheapplicationforequipment authorization. YesPleaserefertothe usermanual. 8.Radiofrequencydevicesoperatingundertheprovisionsofthispart aresubjecttotheradiofrequencyradiationexposurerequirements specifiedin§§1.1307(b),1.1310,2.1091,and2.1093ofthischapter,as appropriate.Applicationsforequipmentauthorizationofmodular transmittersunderthissectionmustcontainastatementconfirming compliancewiththeserequirements.Themodulartransmittermust complywithanyapplicableRFexposurerequirementsinitsfinal configuration.Technicalinformationshowingthebasisforthis statementmustbesubmittedtotheCommissionuponrequest. YesPleaserefertoRF exposure. Note:Ifcompliancewithoneormoreofthenumberedrequirements,listedabove,cannotbe demonstrated,itmaybepossibletoobtaina“LimitedModularApproval”(LMA). ContactName: VickyGuan TitleofPerson:Engineer CompanyName:EcoFlowInc.

Note: 1. This label will be Laser carved on the shielding cover and cannot be removed. 2. The FCC label statement will be included in the user manual which will be printed on a paper insert and sold with the device. Label on the shielding cover

The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. FCC RF EXPOSURE REPORT For Wireless Module MODEL NUMBER: ESP32-S3-WROOM-1U REPORT NUMBER: 4791958017.4-RF-1 ISSUE DATE: November 11, 2025 FCC ID:2A2P9-AP306 Prepared for EcoFlow Inc. RM 401, Plant #1, Runheng Industrial Zone, Fuhai Street, Bao'an District, Shenzhen, 518000, China Prepared by UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch Room 101, Building 2, No.4, Information Road, Songshan Lake, Dongguan, Guangdong, China Tel: +86 769 22038881 Fax: +86 769 33244054 Website: www.ul.com REPORT NO.: 4791958017.4-RF-3 Page 2 of 7 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0112 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Revision History Rev. Issue Date Revisions Revised By V0 November 11, 2025 Initial Issue REPORT NO.: 4791958017.4-RF-3 Page 3 of 7 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0112 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. TABLE OF CONTENTS 1. ATTESTATION OF TEST RESULTS ................................................................................. 4 2. TEST METHODOLOGY ..................................................................................................... 5 3. FACILITIES AND ACCREDITATION ................................................................................. 5 4. REQUIREMENT ................................................................................................................. 6 REPORT NO.: 4791958017.4-RF-3 Page 4 of 7 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0112 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. 1. ATTESTATION OF TEST RESULTS Applicant Information Company Name: EcoFlow Inc. Address: RM 401, Plant #1, Runheng Industrial Zone, Fuhai Street, Bao'an District, Shenzhen, 518000, China Manufacturer Information Company Name: EcoFlow Inc. Address: RM 401, Plant #1, Runheng Industrial Zone, Fuhai Street, Bao'an District, Shenzhen, 518000, China EUT Information EUT Name: Wireless Module Model: ESP32-S3-WROOM-1U Brand: ECOFLOW, EF ECOFLOW Sample Received Date: September 19, 2025 Sample Status: Normal Sample ID: 8945282 Date of Tested: October 15, 2025 to November 11, 2025 APPLICABLE STANDARDS STANDARD TEST RESULTS 447498 D04 Interim General RF Exposure Guidance v01 PASS Prepared By: Checked By: Johnson Liu Fanny Huang Laboratory Engineer Project Engineer Approved By: Kebo Zhang Operations Leader REPORT NO.: 4791958017.4-RF-3 Page 5 of 7 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0112 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. 2. TEST METHODOLOGY The tests documented in this report were performed in accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 and KDB 447498 D01 General RF Exposure Guidance v06. 3. FACILITIES AND ACCREDITATION Accreditation Certificate A2LA (Certificate No.: 4102.01) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been assessed and proved to be in compliance with A2LA. FCC (FCC Designation No.: CN1187) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. Has been recognized to perform compliance testing on equipment subject to the Commission's Declaration of Conformity (DoC) and Certification rules ISED (Company No.: 21320) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been registered and fully described in a report filed with ISED. The Company Number is 21320 and the test lab Conformity Assessment Body Identifier (CABID) is CN0046. Note 1: All tests measurement facilities use to collect the measurement data are located at Building 10, Innovation Technology Park, Song Shan Lake Hi tech Development Zone, Dongguan, 523808, China Note 2: The test anechoic chamber in UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch had been calibrated and compared to the open field sites and the test anechoic chamber is shown to be equivalent to or worst case from the open field site. Note 3: For below 30MHz, lab had performed measurements at test anechoic chamber and comparing to measurements obtained on an open field site. And these measurements below 30MHz had been correlated to measurements performed on an OFS. REPORT NO.: 4791958017.4-RF-3 Page 6 of 7 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM No.: 10-SL-F0112 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. 4. REQUIREMENT LIMIT AND CALCULATION METHOD According to 447498 D04 Interim General RF Exposure Guidance v01, 2.1.4 MPE-Based Exemption An alternative to the SAR-based exemption is provided in § 1.1307(b)(3)(i)(C), for a much wider frequency range, from 300 kHz to 100 GHz, applicable for separation distances greater or equal to λ/2π, where λ is the free-space operating wavelength in meters. The MPE-based test exemption condition is in terms of ERP, defined as the product of the maximum antenna gain and the delivered maximum time-averaged power.10 For this case, a RF source is an RF exempt device if its ERP (watts) is no more than a f…

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The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. CFR 47 FCC PART 15 SUBPART C ISED RSS-247 Issue 4 TEST REPORT For Wireless Module MODEL NUMBER: ESP32-S3-WROOM-1U REPORT NUMBER: 4791958017.4-RF-1 ISSUE DATE: November 11, 2025 FCC ID:2A2P9-AP306 IC:27618-AP306 Prepared for EcoFlow Inc. RM 401, Plant #1, Runheng Industrial Zone, Fuhai Street, Bao'an District, Shenzhen, 518000, China Prepared by UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch Room 101, Building 2, No.4, Information Road, Songshan Lake, Dongguan, Guangdong, China Tel: +86 769 22038881 Fax: +86 769 33244054 Website: www.ul.com REPORT NO.: 4791958017.4-RF-1 Page 2 of 140 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Revision History Rev. Issue Date Revisions Revised By V0 November 11, 2025 Initial Issue REPORT NO.: 4791958017.4-RF-1 Page 3 of 140 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC Part 15.203/15.247 (c) RSS-GEN Clause 6.8 Pass AC Power Line Conducted Emission ANSI C63.10-2020, Clause 6.2 FCC Part 15.207 RSS-GEN Clause 8.8 Pass Conducted Output Power ANSI C63.10-2020, Clause 11.9.2.3.1 FCC Part 15.247 (b)(3) RSS-247 Clause 6.3.2 Pass 6dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020, Clause 11.8.1 FCC Part 15.247 (a)(2) RSS-247 Clause 6.3.1 (a) RSS-Gen Clause 6.7 Pass Power Spectral Density ANSI C63.10-2020, Clause 11.10.5 FCC Part 15.247 (e) RSS-247 Clause 6.3.1 (b) Pass Conducted Band edge and spurious emission ANSI C63.10-2020, Clause 11.11 FCC Part 15.247(d) RSS-247 Clause 6.6 Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020, Clause 11.12 FCC Part 15.247 (d) FCC Part 15.205/15.209 RSS-247 Clause 6.6 RSS-GEN Clause 8.9 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: For ISED, this report is also performed according to ANSI C63.10-2020+Cor.1-2023 standards. *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 ISED RSS-247 Issue 4> when <Simple Acceptance> decision rule is applied. REPORT NO.: 4791958017.4-RF-1 Page 4 of 140 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 6 2. TEST METHODOLOGY ......................................................................................................... 7 3. FACILITIES AND ACCREDITATION ..................................................................................... 7 4. CALIBRATION AND UNCERTAINTY ................................................................................... 8 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 8 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 8 5. EQUIPMENT UNDER TEST .................................................................................................. 9 5.1. DESCRIPTION OF EUT ........................................................................................... 9 5.2. CHANNEL LIST ........................................................................................................ 9 5.3. MAXIMUM POWER .................................................................................................. 9 5.4. TEST CHANNEL CONFIGURATION ...................................................................... 10 5.5. THE WORSE CASE POWER SETTING PARAMETER .......................................... 10 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ......................................................... 11 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................. 12 5.8. SETUP DIAGRAM .................................................................................................. 13 6. MEASURING EQUIPMENT AND SOFTWARE USED......................................................... 14 7. ANTENNA PORT TEST RESULTS ..................................................................................... 17 7.1. CONDUCTED OUTPUT POWER ........................................................................... 17 7.2. 6DB BANDWIDTH AND 99% OCCUPIED BANDWIDTH ........................................ 18 7.3. POWER SPECTRAL DENSITY .............................................................................. 20 7.4. CONDUCTED BAND EDGE AND SPURIOUS EMISSION ..................................... 21 7.5. DUTY CYCLE ......................................................................................................... 23 8. RADIATED TEST RESULTS ............................................................................................... 24 8.1. RESTRICTED BANDEDGE-ONBOARD PCB ANTENNA ....................................... 32 8.2. RESTRICTED BANDEDGE-EXTERNAL PCB ANTENNA ...................................... …

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The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report apply to the test sample(s) mentioned above at the time of the testing period only and are not to be used to indicate applicability to other similar products. CFR 47 FCC PART 15 SUBPART C ISED RSS-247 Issue 4 TEST REPORT For Wireless Module MODEL NUMBER: ESP32-S3-WROOM-1U REPORT NUMBER: 4791958017.4-RF-1 ISSUE DATE: November 11, 2025 FCC ID:2A2P9-AP306 IC:27618-AP306 Prepared for EcoFlow Inc. RM 401, Plant #1, Runheng Industrial Zone, Fuhai Street, Bao'an District, Shenzhen, 518000, China Prepared by UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch Room 101, Building 2, No.4, Information Road, Songshan Lake, Dongguan, Guangdong, China Tel: +86 769 22038881 Fax: +86 769 33244054 Website: www.ul.com REPORT NO.: 4791958017.4-RF-1 Page 2 of 139 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Revision History Rev. Issue Date Revisions Revised By V0 November 11, 2025 Initial Issue REPORT NO.: 4791958017.4-RF-1 Page 3 of 139 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. Summary of Test Results Test Item Clause Limit/Requirement Result Antenna Requirement N/A FCC Part 15.203/15.247 (c) RSS-GEN Clause 6.8 Pass AC Power Line Conducted Emission ANSI C63.10-2020, Clause 6.2 FCC Part 15.207 RSS-GEN Clause 8.8 Pass Conducted Output Power ANSI C63.10-2020, Clause 11.9.2.3.1 FCC Part 15.247 (b)(3) RSS-247 Clause 6.3.2 Pass 6dB Bandwidth and 99% Occupied Bandwidth ANSI C63.10-2020, Clause 11.8.1 FCC Part 15.247 (a)(2) RSS-247 Clause 6.3.1 (a) RSS-Gen Clause 6.7 Pass Power Spectral Density ANSI C63.10-2020, Clause 11.10.5 FCC Part 15.247 (e) RSS-247 Clause 6.3.1 (b) Pass Conducted Band edge and spurious emission ANSI C63.10-2020, Clause 11.11 FCC Part 15.247(d) RSS-247 Clause 6.6 Pass Radiated Band edge and Spurious Emission ANSI C63.10-2020, Clause 11.12 FCC Part 15.247 (d) FCC Part 15.205/15.209 RSS-247 Clause 6.6 RSS-GEN Clause 8.9 Pass Duty Cycle ANSI C63.10-2020, Clause 11.6 None; for reporting purposes only. Pass Note: For ISED, this report is also performed according to ANSI C63.10-2020+Cor.1-2023 standards. *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 ISED RSS-247 Issue 4> when <Simple Acceptance> decision rule is applied. REPORT NO.: 4791958017.4-RF-1 Page 4 of 139 UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch FORM NO: 10-SL-F0035 This report shall not be reproduced except in full, without the written approval of UL Verification Services (Guangzhou) Co., Ltd, Song Shan Lake Branch. CONTENTS 1. ATTESTATION OF TEST RESULTS ..................................................................................... 6 2. TEST METHODOLOGY ......................................................................................................... 7 3. FACILITIES AND ACCREDITATION ..................................................................................... 7 4. CALIBRATION AND UNCERTAINTY ................................................................................... 8 4.1. MEASURING INSTRUMENT CALIBRATION ........................................................... 8 4.2. MEASUREMENT UNCERTAINTY ............................................................................ 8 5. EQUIPMENT UNDER TEST .................................................................................................. 9 5.1. DESCRIPTION OF EUT ........................................................................................... 9 5.2. CHANNEL LIST ........................................................................................................ 9 5.3. MAXIMUM POWER .................................................................................................. 9 5.4. TEST CHANNEL CONFIGURATION ...................................................................... 10 5.5. THE WORSE CASE POWER SETTING PARAMETER .......................................... 10 5.6. DESCRIPTION OF AVAILABLE ANTENNAS ......................................................... 11 5.7. SUPPORT UNITS FOR SYSTEM TEST ................................................................. 12 6. M…

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