2A2P9-EFTX288EcoFlow TRAIL Plus 300 DC Portable Power Station (288Wh)

1/1 US Agent for Service of ProcessLETTER OF ATTESTATION TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 US Agent for Service of Process: Company Name: EcoFlow Technology Inc FRN: 0033593781 Contact Name: Yvonne Zhou Address: 1687 114th Ave SE suite 101 Bellevue, WA 98004 United States Telephone No: (415) 691-9443 Email: [email protected] Grantee code: FCC ID: FRN: Contact Name: Applicant: Company name: EcoFlow Inc. Product Description: EcoFlow TRAlL Plus 300 DC Portable Power Station (288Wh) Address: District,Shenzhen, 518000 2A2P9 2A2P9-EFTX288 0031193519 Vicky Guan RM 401,Plant #1,Runheng Industrial Zone,Fuhai Street,Bao'an China Telephone No: 075586660185 Email: [email protected] [EcoFlow Inc.] certifies that, as of the date of this filing of the application with the TCB, [EcoFlow Technology Inc] is our designated US agent for service of process for the above referenced FCC ID. [EcoFlow Inc.] 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 equipment. [EcoFlow Technology Inc] accepts, as of the date of the filing of the application, the obligation of the designated US agent for service of process for the above reference FCC ID. The US Agent for Service of Process is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. The Applicant is aware of and agrees to comply with the requirements outlined in the FCC Equipment Authorization Program, Report and Order FCC 22-84, and clause § 2.911. 1/1 Date: 10/10/2025 Company name: EcoFlow Inc. Company Name: EcoFlow Technology Inc Applicant’s Name: Vicky Guan US Agent’s Name: Yvonne Zhou Title: Manager Title: Manager Signature Signature

Corporation ECOFLOW TECHNOLOGY INC. ECOFLOW TECHONOLOGY INC. STE 101 1687 114TH AVE SOUTHEAST BELLEVUE WA 98004-6964 Unified Business ID #: 604850325 Business ID #: 001 Location: 0001 Issue Date: Oct 06, 2023 TAX REGISTRATION - ACTIVE UBI: 604850325 001 0001 ECOFLOW TECHNOLOGY INC. ECOFLOW TECHONOLOGY INC. STE 101 1687 114TH AVE SOUTHEAST BELLEVUE WA 98004-6964 TAX REGISTRATION - ACTIVE IMPORTANT! PLEASE READ THE FOLLOWING INFORMATION CAREFULLY BEFORE POSTING THIS LICENSE General Information Post this Business License in a visible location at your place of business. If you were issued a Business License previously, destroy the old one and post this one in its place. Login to My DOR at dor.wa.gov if you need to make changes to your business name, location, mailing address, telephone number, or business ownership. Telephone: 360-705-6741 Endorsements All endorsements should be renewed by the expiration date that appears on the front of this license to avoid any late fees. If there is no expiration date, the endorsements remain active as long as you continue required reporting. Tax Registration, Unemployment Insurance, and Industrial Insurance endorsements require you to submit periodic reports. Each agency will send you the necessary reporting forms and instructions. For assistance or to request this document in an alternate format, visit http://business.wa.gov/BLS or call (360) 705-6741. Teletype (TTY) users may use the Washington Relay Service by calling 711. BLS-700-107 (07/27/20)

EcoFlow Inc. DATE:2025-09-12 Federal Communications Commission 445 12 th Street SW Washington, DC 20554 Subject: Limited Agency Agreement (EcoFlow Inc.) FCC ID: 2A2P9-EFTX288 To Whom It May Concern: We, EcoFlow Inc. at RM 401,Plant #1,Runheng Industrial Zone, Fuhai Street,Bao'an District, Shenzhen 518000, China hereby authorized Intertek Testing Service Shenzhen Ltd. Longhua Branch at 101, 201, Building B, No. 308 Wuhe Ave, Zhangkengjing Community GuanHu Subdistrict, LongHua District, Shenzhen, P.R.C. to act as our Agent for the purpose of preparing application for FCC ID number (2A2P9-EFTX288) under all applicable parts of the FCC rules and regulations. The effective date of this limited agency agreement is (2025-09-12). The Limited Agency Agreement expires on (2026-09-12), unless sooner terminated or extended by written notice to Intertek Testing Service Shenzhen Ltd. Longhua Branch and the Federal Communications Commission. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. The applicant is not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 U.S.C. 862, and no party to the application is subject to a denial of federal benefits pursuant to that section. If you have any questions or comments, please do not hesitate to contact me. Sincerely, <Signature> Name: Vicky Guan Title: Manager Applicant Company: EcoFlow Inc.

1(2) EcoFlow Inc. Attention: Certification reviewer RE: Request for Confidentiality FCC ID: 2A2P9-EFTX288 To Whom It May Concern: Permanent Confidentiality [Complete this section if permanent confidentiality is requested] Request to withhold permanently from public review certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR 0.457(d) and 0.459 of the FCC Rules. In particular, the following sections of the application are to be kept permanently confidential: [Select one or more of items below, as appropriate] Schematics Block Diagrams Operational Description Tune-up Procedure Parts List Internal Photos (see note) Users Manual (see note) Note 1: Internal Photos may be held confidential 1) if the circuit board or internal components are not accessible to users. For example, it is acceptable if the circuit board is enclosed in epoxy. 2) Also, it is acceptable if the device is not accessible to the public, for example, a device mounted on the top of a large tower (or in a fenced enclosure) such that it is only serviceable by professional designated technicians under a Non- Disclosure Agreement (NDA). All sales for these devices must be under a NDA restricting the disclosure of the propriety information, including internal photos. Users Manual may be held confidential only when the manual contains proprietary technical information intended for professional technicians obligated under a NDA. All sales and distribution of the user’s manual must be under a NDA that restricts the disclosure of the information. In the application cover letter requesting permanent confidentiality the following additional description and the NDA exhibit is required: 1. Describe in detail how internal photos and/or users manual information are controlled to prevent them from becoming public or disclosed to unauthorized persons. 2. Describe how public access is restricted for products serviceable by professional designated technicians. 3. A statement that all sales of the non-consumer device will be under a NDA to include third party sales and that the final user of the device is subject to the NDA. 4. Provide an example of the NDA between the grantee and a purchaser. The request for confidentiality must Note 2: For scanning receiver, the schematics, block diagrams, operational description, tune-up procedure, parts list and internal photos are always held permanently confidential. Short-term Confidentiality [Complete this section if short-term confidentiality is requested] Request to withhold from public review for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing, certain portions of the application for equipment certification for the referenced FCC identifiers. This request for confidentiality is made pursuant to 47 CFR 0.457(d) and 0.459 of the FCC Rules. In particular, the following sections of the application are to be kept short-term confidential for a period above from the date of the grant 2(2) [Select one or more of items below that are not selected in the list above, as appropriate] Schematics Block diagrams Operational Description Tune-up Procedure Parts List Test Setup Photos External Photos Internal Photos Users Manual Rationale for request for confidentiality: We have invested considerable time and materials in research and development to produce the referenced product. Permanent confidentiality: Disclosure of the permanently confidential portions of this application to competitors would not only give them significant competitive advantages in developing similar products, but would also disclose successful implementation of unpublished, leading edge technology developed by us. Short-term confidentiality: Disclosure of the short-term confidential portions of this application during the period of importation and/or distribution would reveal key aspects of proprietary technology to competitors and diminish the value of our investment in research and development. If you have questions or need further information, please contact the undersigned. Sincerely, Date: 2025-09-12 <Signature> Name: Vicky Guan Title: Manager Company: EcoFlow Inc.

DATE: 2025-09-12 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 Authority to Act as Agent On our behalf, I appoint Intertek Testing Service Shenzhen Ltd. Longhua Branch at 101, 201, Building B, No. 308 Wuhe Ave, Zhangkengjing Community GuanHu Subdistrict, LongHua District, Shenzhen, P.R.C. (Name of Agent company name and address) to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the Federal Communications Commission’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, still resides with EcoFlow Inc. at RM 401,Plant #1,Runheng Industrial Zone, Fuhai Street,Bao'an District, Shenzhen 518000, China (Applicant Name and address) <Signature> Name: Vicky Guan Title: Manager Applicant Company: EcoFlow Inc.

Page 1 of 1 EcoFlow Inc. Attention: Application Examiner Re: Covered List, located at https://www.fcc.gov/supplychain/coveredlist and 47 CFR parts §2.903 and §2.911(d)(5)(ii) of the FCC rules Applicant: EcoFlow Inc. FCC ID: 2A2P9-EFTX288 To whom it may concern, [EcoFlow Inc.] (“Applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to 47 CFR part §2.903 of the FCC rules and does not originate directly or indirectly from any company named on the covered list located in the link above or any subsidiary or affiliate thereof. Applicant further certifies 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 and is not a subsidiary or affiliate of any such entity pursuant to 47 CFR part §1.50002 and required by 47 CFR part §2.911(d)(5)(ii) of the FCC rules. Applicant further certifies that no Cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software is installed in the equipment being certified. I HEREBY CERTIFY THAT I am authorized to make the representations above on behalf of the Applicant and agree to immediately notify Intertek if there is any change in the status identified above. Signature Vicky Guan Manager EcoFlow Inc. 2025-09-12

Authorization Letter We, Company name Shenzhen NTEK Testing Technology Co., Ltd. Addresss No. 24 Xinfa East Road, Xiangshan Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, People's Republic of China City Shenzhen Country China A uthorized by: Company name Intertek Testing Services Shenzhen Ltd. Longhua Branch Addresss 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, Shenzhen, P.R. China. City Shenzhen Country China NTEK authorizes Intertek Testing Services Shenzhen Ltd. Longhua Branch to use all datas in FCC reports (FCC ID: 2A2P9-EFTX288). A ttestation: City and Country: Date: Name: (this must be a person) Function: Signature: (or official company stamp) Shenzhen, China. 2025-10-15 Alex Li Manager

Label Location

FCC ID: 2A2P9-EFTX288 1 INTERTEK TESTING SERVICES Radiofrequency radiation exposure evaluation The equipment under test (EUT) is a EcoFlow TRAIL Plus 300 DC Portable Power Station (288Wh), EF-TX-288P with Bluetooth 5.3 BLE function operating in 2402- 2480MHz 40 channels with 2MHz channel spacing and Wi-Fi function operating at 2412-2462MHz for 802.11b/g/n-HT20/ax-VHT20, 11 channels with 5MHz channel spacing and 2422-2452MHz for 802.11n-HT40, 7 channels with 5MHz channel spacing. The EUT is powered by DC 14.4 V from battery, or 10V-30V from solar energy or USB- C1 DC 28V powered by adapter from AC mains 120V60Hz. For more detail information pls. refer to the user manual. For Bluetooth function: Bluetooth function Modulation Type: GFSK Bluetooth Version: 5.3 BLE (Single Mode BLE only, support 1M and 2M) Antenna Type: PCB antenna Antenna Gain: 4.3dBi Max. The nominal radiated output power (e.i.r.p) specified: 2.5dBm (tolerance: ± 2dB). The nominal conducted output power specified: -1.8dBm (tolerance: ± 2dB). According to the KDB 447498 V06: The Maximum peak conducted output power for the EUT is -0.02 dBm in the frequency 2480MHz for BLE 1M which is within the production variation. The Minimum peak conducted output power for the EUT is -1.7 dBm in the frequency 2402MHz for BLE 1M which is within the production variation. The Maximum peak conducted output power for the EUT is 0.19 dBm in the frequency 2480MHz for BLE 2M which is within the production variation. The Minimum peak conducted output power for the EUT is -1.38 dBm in the frequency 2402MHz for BLE 2M which is within the production variation. FCC ID: 2A2P9-EFTX288 2 The maximum conducted output power specified is 0.2dBm= 1.047mW The source- based time-averaging conducted output power =1.047mW The SAR Exclusion Threshold Level: = 3.0 * (min. test separation distance, mm) / sqrt(freq. in GHz) = 3.0 * 5 / sqrt (2.480) mW = 9.53 mW Since the source-based time-averaging conducted output power is well below the SAR low threshold level, so the EUT is considered to comply with SAR requirement without testing. For Wi-Fi function: Wi-Fi function Modulation Type: BPSK, QPSK, 16QAM, 64QAM for OFDM; BPSK, QPSK, 16QAM, 64QAM, 256QAM, 1024QAM for OFDMA; CCK, DQPSK, DBPSK for DSSS. Antenna Type: PCB antenna Antenna Gain: 4.3dBi Max. The nominal radiated output power (e.i.r.p) specified: 2.7dBm (tolerance: ± 2dB). The nominal conducted output power specified: -1.6dBm (tolerance: ± 2dB). According to the KDB 447498 V06: The Maximum peak conducted output power for the EUT is 0.39 dBm in the frequency 2437MHz for 802.11g which is within the production variation. The Minimum peak conducted output power for the EUT is 0.15 dBm in the frequency 2462MHz for 802.11n-HT20 which is within the production variation. The maximum conducted output power specified is 0.4dBm= 1.096mW The source- based time-averaging conducted output power =1.096mW FCC ID: 2A2P9-EFTX288 3 The SAR Exclusion Threshold Level: = 3.0 * (min. test separation distance, mm) / sqrt(freq. in GHz) = 3.0 * 5 / sqrt (2.462) mW = 9.56 mW Since the source-based time-averaging conducted output power is well below the SAR low threshold level, so the EUT is considered to comply with SAR requirement without testing. Simultaneous Transmission: EUT can’t transmit simultaneously. (Bluetooth and Wi-Fi use a single antenna and do not support simultaneous transmission.)

Antenna test report Test Laboratory Shenzhen Morlab Communications Technology Co., Ltd. Address FL.1-3, Building A, FeiYang Science Park, No.8 LongChang Road, Block67, BaoAn District, ShenZhen , GuangDong Province, P. R. China Contact: EDWARD.LYU +86 755 36698555 Model PCB Antenna Manufacturer Dongguan Youbi Electronics Co., LTD Address Building 79, New Sun Industrial City, Lincun Community, Tangxia Town, Dongguan City, Guangdong Province 1. Test procedures Standards Description of Test Item Result ANSI/ IEEE 149-2021 IEEE Recommended Practice for Antenna Measurements Compliant 2. Test Items and Equipment Test items Test equipment S Parameter 1.Return Loss 2.VSWR Network analyzer (Agilent E5071B) The whole machine of Passive parameters 1.Frequency 2.Gain 3.Radiation Pattern 1.3D microwave darkroom (6m*6m*6m) 2.Network analyzer (Agilent E5071B) 3. Test Equipment Equipement Name Serial No. Type Manufacture Cal.Date Cal.Due Date Network Analyzer MY46110140 E5071C Agilent 2024.05.30 2025.05.29 OTA Chamber TJ2235-Q1793 AMS-8923- 150 ETS 2022-11-30 2025-11-29 Antenna Measurement System 1685 EMQuest EMQ-100 V1.13 Build 21267 ETS N/A N/A 4. Name of commercial test software Software Name Serial No. Version Manufacturer Antenna Measurement System 1685 "EMQuest EMQ-100 V 1.13 Build 21267" ETS 5. The uncertainty is calculated using the methods suggested in the“Guide to the Expression of Uncertainty in Measurement" (GUM) published by ISO. When the test result is a critical value,we will use the measurement uncertainty give the judgment result based on the 95%Confidence intervals. 6. PCB Antenna Physical Size (unit: mm) 34mm*8.58mm 7. Antenna Electrical Specification On-board Antenna Freq 2.4~2.483GHz Gain 4.3dBi VSWR <2 Impedance 50 ohm Polarization Linear Type of Antenna PCB Antenna Outline Dimensions 34mm*8.58mm Manufacture EcoFlow Efficiency ≥49.98% Connector Type Microstrip lines Operating Temperature -40°C~+85°C Storage Temp -40°C~+85°C 8. 2.4G Antenna Type & Gain Type: PCB Antenna On-board Antenna Frequency( MHz) Efficiency (%) Gain (dBi) 2400 56.26 4.30 2410 55.83 4.05 2420 53.50 3.78 2430 52.51 3.77 2440 53.15 3.74 2450 51.82 3.28 2460 51.78 2.97 2470 50.16 2.71 2480 49.98 2.62 2490 50.06 2.65 2500 50.40 2.58 9. Pattern and Gain PCB Antenna PHI=0DEG PHI=90DEG THETA=90DEG Gain Gain (d Bi) Angle (°) Scal e: 5/di v Mi n: -30 Max : 5 0 180 30 210 60 240 90270 120 300 150 330 2400 MHz 2410 MHz 2420 MHz 2430 MHz 2440 MHz 2450 MHz 2460 MHz 2470 MHz 2480 MHz 2490 MHz 2500 MHz Gain Gain (d Bi) Angle (°) Scal e: 5/di v Mi n: -25 Max : 5 0 180 30 210 60 240 90270 120 300 150 330 2400 MHz 2410 MHz 2420 MHz 2430 MHz 2440 MHz 2450 MHz 2460 MHz 2470 MHz 2480 MHz 2490 MHz 2500 MHz 3D radiation pattern Tester by：EDWARD.LYU Gain Gain (d Bi) Angle (°) Scal e: 2/di v Mi n: -12 Max : 4 0 180 30 210 60 240 90270 120 300 150 330 2400 MHz 2410 MHz 2420 MHz 2430 MHz 2440 MHz 2450 MHz 2460 MHz 2470 MHz 2480 MHz 2490 MHz 2500 MHz Total Gain Gain (d Bi) -25 5 -20 -15 -10 -5 0 Z X Y Azi m uth = 0.4 El evati on = -86.2 Rol l = -179.5

EcoFlow Inc. TEST REPORT SCOPE OF WORK FCC TESTING– EF-TX-288P REPORT NUMBER 250728023SZN-003 ISSUE DATE [REVISED DATE] 10 October 2025 [---------------------] PAGES 103 DOCUMENT CONTROL NUMBER FCC ID 247_b © 2017 INTERTEK Intertek Report No.: 250728023SZN-003 This report is for the exclusive use of Intertek's Client and is provided pursuant to the agreement between Intertek and its Client. Intertek's responsibility and liability are limited to the terms and conditions of the agreement. Intertek assumes no liability to any party, other than to the Client in accordance with the agreement, for any loss, expense or damage occasioned by the use of this report. Only the Client is authorized to permit copying or distribution of this report and then only in its entirety. Any use of the Intertek name or one of its marks for the sale or advertisement of the tested material, product or service must first be approved in writing by Intertek. The observations and test results in this report are relevant only to the sample tested. This report by itself does not imply that the material, product, or service is or has ever been under an Intertek certification program. Intertek Testing Services Shenzhen Ltd. Longhua Branch 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, Shenzhen, P.R. China. Tel: (86 755) 8601 6288 Fax: (86 755) 8601 6751 Version: 01-November-2017 Page: 1 of 103 FCC ID 247_b TEST REPORT 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, Shenzhen, P.R. China. Tel: (86 755) 8601 6288 Fax: (86 755) 8601 6751 www.intertek.com EcoFlow Inc. Application For Certification FCC ID: 2A2P9-EFTX288 EcoFlow TRAIL Plus 300 DC Portable Power Station (288Wh) Model: EF-TX-288P Brand Name: EF ECOFLOW, ECOFLOW 2.4GHz Wi-Fi Transceiver Report No.: 250728023SZN-003 We hereby certify that the sample of the above item is considered to comply with the requirements of FCC Part 15, Subpart C for Intentional Radiator, mention 47 CFR [10-1-24] Prepared and Checked by: Approved by: Robin Zhou Johnny Wang Senior Project Engineer Project Engineer Date: 10 October 2025 Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 2 of 103 FCC ID 247_b TEST REPORT MEASUREMENT/TECHNICAL REPORT This report concerns (check one) Original Grant X Class II Change Equipment Type: DTS - Part 15 Digital Transmission Systems (Wi-Fi transmitter portion) Deferred grant requested per 47 CFR 0.457(d)(1)(ii)? Yes No X If yes, defer until: date Company Name agrees to notify the Commission by: date of the intended date of announcement of the product so that the grant can be issued on that date. Transition Rules Request per 15.37? Yes No X If no, assumed Part 15, Subpart C for intentional radiator - the new 47 CFR [10-01-24] Edition] provision. Report prepared by: Robin Zhou Intertek Testing Services Shenzhen Ltd. Longhua Branch 101, 201, Building B, No. 308 Wuhe Avenue, Zhangkengjing Community, GuanHu Subdistrict, LongHua District, Shenzhen, P.R. China. Tel: (86 755) 8601 6288 Fax: (86 755) 8601 6661 Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 3 of 103 FCC ID 247_b TEST REPORT Table of Contents 1.0 Summary of Test results .............................................................................................. 4 2.0 General Description .................................................................................................... 5 2.1 Product Description ......................................................................................................... 5 2.2 Related Submittal(s) Grants ............................................................................................. 5 2.3 Test Methodology ............................................................................................................ 6 2.4 Test Facility ...................................................................................................................... 6 3.0 System Test Configuration ........................................................................................... 7 3.1 Justification ...................................................................................................................... 7 3.2 EUT Exercising Software ................................................................................................... 7 3.3 Special Accessories .......................................................................................................... 8 3.4 Measurement Uncertainty ............................................................................................... 8 3.5 Equipment Modification .................................................................................................. 8 3.6 Support Equipment List and Description ........................................................................ 8 4.0 Measurement Results ................................................................................................. 9 4.1 Maximum Conducted Output Power at Antenna Terminals ............................................... 9 4.2 Minimum 6 dB RF Bandwidth ........................................................................................ 11 4.3 Maximum Power Density Reading ................................................................................. 23 4.4 Out of Band Conducted Emissions ................................................................................. 35 4.5 Out of Band Radiated Emissions .................................................................................... 76 4.6 Transmitter Radiated Emissions in Restricted Bands ...................................................... 77 4.7 Field Strength Calculation .............................................................................................. 78 4.8 Radiated Spurious Emission ....................................................................................…

Text truncated - open the document above for the full version.

Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 66 of 103 FCC ID 247_b TEST REPORT Test Graphs Band Edge NVNT b 2412MHz Ant1 Ref Band Edge NVNT b 2412MHz Ant1 Emission Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 67 of 103 FCC ID 247_b TEST REPORT Band Edge NVNT b 2462MHz Ant1 Ref Band Edge NVNT b 2462MHz Ant1 Emission Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 68 of 103 FCC ID 247_b TEST REPORT Band Edge NVNT g 2412MHz Ant1 Ref Band Edge NVNT g 2412MHz Ant1 Emission Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 69 of 103 FCC ID 247_b TEST REPORT Band Edge NVNT g 2462MHz Ant1 Ref Band Edge NVNT g 2462MHz Ant1 Emission Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 70 of 103 FCC ID 247_b TEST REPORT Band Edge NVNT n20 2412MHz Ant1 Ref Band Edge NVNT n20 2412MHz Ant1 Emission Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 71 of 103 FCC ID 247_b TEST REPORT Band Edge NVNT n20 2462MHz Ant1 Ref Band Edge NVNT n20 2462MHz Ant1 Emission Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 72 of 103 FCC ID 247_b TEST REPORT Band Edge NVNT n40 2422MHz Ant1 Ref Band Edge NVNT n40 2422MHz Ant1 Emission Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 73 of 103 FCC ID 247_b TEST REPORT Band Edge NVNT n40 2452MHz Ant1 Ref Band Edge NVNT n40 2452MHz Ant1 Emission Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 74 of 103 FCC ID 247_b TEST REPORT Band Edge NVNT ax20 2412MHz Ant1 Ref Band Edge NVNT ax20 2412MHz Ant1 Emission Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 75 of 103 FCC ID 247_b TEST REPORT Band Edge NVNT ax20 2462MHz Ant1 Ref Band Edge NVNT ax20 2462MHz Ant1 Emission Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 76 of 103 FCC ID 247_b TEST REPORT Applicant: EcoFlow Inc. Date of Test: 22 September 2025 Worst Case Model: EF-TX-288P 4.5 Out of Band Radiated Emissions (for emissions in 4.4 above that are less than 30dB below carrier), FCC Rule 15.247(d): For out of band emissions that are close to or that exceed the 30dB attenuation requirement described in the specification, radiated measurements were performed at a 3m separation distance to determine whether these emissions complied with the general radiated emission requirement.  Not required, since all emissions are more than 30dB below fundamental   See attached data sheet Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 77 of 103 FCC ID 247_b TEST REPORT Applicant: EcoFlow Inc. Date of Test: 22 September 2025 Worst Case Model: EF-TX-288P 4.6 Transmitter Radiated Emissions in Restricted Bands, FCC Rule 15.35(b) (c): Data is included of the worst case configuration (the configuration which resulted in the highest emission levels). A sample calculation, configuration photographs and data tables of the emissions are included. All measurements were performed with peak detection unless otherwise specified. The data on the following pages list the significant emission frequencies, the limit and the margin of compliance. Intertek Report No.: 250728023SZN-003 Version: 01-November-2017 Page: 78 of 103 FCC ID 247_b TEST REPORT Applicant: EcoFlow Inc. Date of Test: 22 September 2025 Worst Case Model: EF-TX-288P 4.7 Field Strength Calculation The field strength is calculated by adding the reading on the Spectrum Analyzer to the factors associated with preamplifiers (if any), antennas, cables, pulse desensitization and average factors (when specified limit is in average and measurements are made with peak detectors). A sample calculation is included below. FS = RA + AF + CF - AG + PD Where FS = Field Strength in dBV/m RA = Receiver Amplitude (including preamplifier) in dBV CF = Cable Attenuation Factor in dB AF = Antenna Factor in dB/m AG = Amplifier Gain in dB PD = Pulse Desensitization in dB In the radiated emission table which follows, the reading shown on the data table may reflect the preamplifier gain. An example of the calculations, where the reading does not reflect the preamplifier gain, follows: FS = RA + AF + CF - AG + PD Example Assume a receiver reading of 62.0 dBV is obtained. The antenna factor of 7.4 dB/m and cable factor of 1.6 dB is added. The amplifier gain of 29 dB is subtracted. The pulse desensitization factor of the spectrum analyzer was 0 dB. The net field strength for comparison to the appropriate emission limit is 42 dBV/m. This value in dBV/m was converted to its corresponding level in V/m. RA = 62.0 dBV AF = 7.4 dB/m CF = 1.6 dB AG = 29.0 dB PD = 0 dB FS = 62 + 7.4 + 1.6 - 29 + 0 = 42 dBV/m Level in mV/m = Common Antilogarithm [(42 dBV/m)/20] = 125.9 V/m Intertek Report No.: 250728023SZN-003 Version: 01-Nov…

Text truncated - open the document above for the full version.