2AEIM-1930238Battery Monitor Board

Date: May 12, 2025 Rev: 0.1 HACS-F039 U.S. Agent for Service of Process Attestation HCT AMERICA, INC. ([email protected]) 840 Yosemite Way, Milpitas, CA 95035 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 1 of 1 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT AMERICA, INC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT AMERICA, INC. FCC Part 2.911(d)(7) Attestation U.S. Agent for Service of Process Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Attn: Reviewing Engineer Applicant Information: Company Name: Tesla, Inc. Contact Name: Sean Lui Company Address: 3500 Deer Creek Road Palo Alto, CA 94304, USA Contact Phone Number: (650) 681-5109 Email: [email protected] FRN: 0024474967 Applicant Signature: __________________ Signed by (Printed Name/Title): Sean Lui/ Sr. Staff Compliance Engineer Date: 12/Jan/2026 Tesla, Inc. (“the applicant”) 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 to inform the FCC whenever the agent information changes. U. S. Agent Information: Company Name: Tesla, Inc Contact Name: Chenchen Gao Company Address: 3500 Deer Creek Road Palo Alto, CA 94304, USA Contact Phone Number: (313)455-7279 Email: [email protected] FRN: 0024474967 Applicant Signature: _ _________________ Signed by (Printed Name/Title): Chenchen Gao / Sr. Technical Program Manager Date: 1/13/2026

Date: June 24, 2025 Rev: 0.2 HACS-F041 Covered List Attestation Letter HCT AMERICA, INC. ([email protected]) 840 Yosemite Way, Milpitas, CA 95035 TEL: +1.510.933.8848, Fax: +1.510.933.8849 Page 1 of 1 This document is electronically controlled. Hard copy documents are uncontrolled. Please check all hard copies against the controlled electronic copy to ensure validity. This document is the confidential property of HCT AMERICA, INC. It may not be forwarded or reproduced in whole or in part without written permissions from HCT AMERICA, INC. FCC Part 2.909(d)(5)(i) and 2.909(d)(5)(ii) Attestations Date: 12/26/2025 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Attn: Reviewing Engineer FCC ID: 2AEIM-1930238 Statement for 47 CFR section 2.911(d)(5)(i) Tesla, Inc certifies that as of the date of the application 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. Statement for 47 CFR section 2.911(d)(5)(ii) Tesla, Inc (“the applicant”) certifies that, as of the date of the filing of this application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates – see KDB 986446 Question 5) as an entity producing “covered” equipment. Tesla, Inc (“the applicant”) certifies that, the device does not have cybersecurity and/or anti-virus software produced by Kaspersky Lab, Inc. or any of its successors and assignees, identified on the Covered list installed on the device, nor will it be installed by the applicant anytime after certification. Sincerely, Name: Chenchen Gao Title: Sr Technical Program Manager Company Name: Tesla, Inc Company Address: 3500 Deer Creek Road Palo Alto, CA 94304, USA Contact Phone/Email: (313)4557279/ [email protected]

Tesla, Inc. 3500 Deer Creek Road, Palo Alto, CA 94304 p +650 681 5100 f +650 681 5101 DATE : 12/26/2025 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD SUBJECT : Request for Confidentiality for FCC ID : 2AEIM-1930238 We hereby request confidential treatment of the information accompanying this application as outlined below: LONG-TERM AND SHORT-TERM CONFIDENTIAL LIST LONG-TERM CONFIDENTIAL Exhibi t Description 1 Block Diagram 2 Operational Description 3 Parts List 4 Schematics 5 Internal Photos SHORT-TERM CONFIDENTIAL (180 DAYS) 5 External Photos 6 Test-Setup Photos 7 User’s Manual The EUT meets the requirements for Internal Photos to be held to be held LTC per KDB 726920 D01 Sections II. 3) a) and 3) c). The EUT will not be sold to the public or third parties and is used by Tesla only. The EUT is not end-user accessible as it is installed in Tesla vehicles by Tesla professionally trained technicians. The assembly process is described in operational description. The above materials 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 competitors. The applicant understands that pursuant to Section 0.457 & 0.459 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Signed by: Chenchen Gao *Applicant Signature Company Name: Tesla, Inc Company Address: 3500 Deer Creek Road Palo Alto, CA 94304, USA Contact Name / Title: Chenchen Gao / Sr Technical Program Manager

Tesla, Inc. 3500 Deer Creek Road, Palo Alto, CA 94304 p +650 681 5100 f +650 681 5101 DATE : December 26, 2025 To: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD To whom it may concern: Subject : FCC Agent Authorization Letter for FCC ID : 2AEIM-1930238 We, the undersigned, hereby authorize HCT America INC to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by HCT America INC on our behalf shall have the same effect as acts of our own. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). We declare that the information provided to the FCC is true and correct to the best of our knowledge (47 CFR 2.911(d)) and we have been informed of the grantee responsibilities (47 CFR 2.909) with regard to certified equipment. We recognize that we are still responsible for the terms and conditions outlined in the HCT America Client Services Agreement. This authorization is valid until further written notice from the applicant. Sincerely, Signed by: Chenchen Gao Company Name : Tesla, Inc Company Address : 3500 Deer Creek Road Palo Alto, CA 94304, USA Contact Person Name/Title (in print) : Chenchen Gao/ Sr Technical Program Manager

Tesla, Inc. 3500 Deer Creek Road, Palo Alto, CA 94304 p +650 681 5100 f +650 681 5101 Federal Communications Commission Office of Engineering & Technology Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Via Electronic Filing Date: January 12, 2026 Re: Authorized Personnel for Grantee Code 2AEIM To Whom It May Concern: I currently serve as Tesla, Inc’s (Tesla) grantee contact (Grantee Code 2AEIM) for Federal Communications Commission (FCC) equipment authorizations. As prescribed in KDB 852134 Authorized Policy Form 731, I authorize the following personnel to act on Tesla’s behalf with regard to all matters that relate to FCC equipment authorization (i.e., signing Form 731, attestation letters, and confidentiality request letters). These individuals also are authorized to assign additional persons to act on Tesla’s behalf as authorized agents. Authorized Personnel: • Chenchen Gao This authorization is valid until further written notice from any of Tesla’s authorized grantee contacts. Sincerely Yours, Sean Lui Sr. Staff Charging Compliance Engineer 3500 Deer Creek Road, Palo Alto, California US 94304 Phone: (650) 681-5109 [email protected]

Note: The FCC logo is located on the PCBA bottom side in silkscreen format Wireless Battery Monitor Board Model: 1930238 FCC ID: 2AEIM-1930238 IC: 20098-1930238 CAN ICES-003 (B)/NMB-003(B) Made in Mexico

RF EXPOSURE REPORT FCC APPLICANT TESLA INC MODEL NAME 1930238 FCC ID 2AEIM-1930238 ISED ID 20098-1930238 REPORT NUMBER HA2511-0263-R05-01 Report No.: HA2511-0263-R05-01 1 / 8 This document may not be copied or reproduced (reprinted) without written consent by HCT America, Inc. HCT America, Inc., 840 Yosemite Way, Milpitas, CA 95035, USA TEL: +1-510-933-8848 TEST REPORT Date of Issue January 29, 2026 Test Site HCT America, Inc. 840 Yosemite Way, Milpitas, CA 95035, USA Applicant TESLA INC Applicant Address 3500 Deer Creek Rd, Palo Alto, CA 94304 U.S.A FCC ID 2AEIM-1930238 ISED ID 20098-1930238 Model Name 1930238 EUT Type PCBA FCC Classification Digital Transmission System (DTS) FCC Rule Part(s) Part 1 (§1.1310 / §1.1307), Part 2 (§2.1091) Test Procedure KDB 447498 D01 v06 The device bearing the trade name and model specified above, has been shown to comply with the applicable technical standards as indicated in the measurement report and was in accordance with the procedures specified in §2.947. The results in this report apply only to the product which was tested. Other similar equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. I attest to the accuracy of data. All measurements reported herein were performed by me or were made under my supervision and are correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the qualifications of all persons taking them. HCT America, Inc. certifies that no party to application has been denied the FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C 862 Tested By Reviewed By John Park Dan Coronia Test Engineer Technical Manager Report No.: HA2511-0263-R05-01 2 / 8 This document may not be copied or reproduced (reprinted) without written consent by HCT America, Inc. HCT America, Inc., 840 Yosemite Way, Milpitas, CA 95035, USA TEL: +1-510-933-8848 REVISION HISTORY The revision history for this document is shown in table. TEST REPORT NO. REVISION DATE DESCRIPTION HA2511-0263-R05 0 December 16, 2025 Initial Issue HA2511-0263-R05-01 1 January 29, 2026 Change model name: BMB to 1930238 Change RF specification: BLE to 2.4GHz ISM Report No.: HA2511-0263-R05-01 3 / 8 This document may not be copied or reproduced (reprinted) without written consent by HCT America, Inc. HCT America, Inc., 840 Yosemite Way, Milpitas, CA 95035, USA TEL: +1-510-933-8848 TABLE OF CONTENTS 1. EUT DESCRIPTION ............................................................................................................................................ 4 2. INTRODUCTION ................................................................................................................................................ 5 2.1. RF Exposure Exemptions for Single Source .............................................................................................. 5 2.2. RF Exposure Exemptions for Simultaneous Transmission ......................................................................... 6 3. RESULT ............................................................................................................................................................ 7 3.1. MPE-Based Exemptions Calculation ........................................................................................................ 7 3.2. SUMMARY OF RESULTS .......................................................................................................................... 8 Report No.: HA2511-0263-R05-01 4 / 8 This document may not be copied or reproduced (reprinted) without written consent by HCT America, Inc. HCT America, Inc., 840 Yosemite Way, Milpitas, CA 95035, USA TEL: +1-510-933-8848 1. EUT DESCRIPTION Model 1930238 EUT Type Battery monitor board Power Supply 3.3 V d.c. RF Specification 2.4GHz ISM Transmitter Chain 1 Exemption Analysis 1-mW Test Exemptions SAR-Based Test Exemptions MPE-Based Test Exemptions Antenna Specification 1) Antenna Type: IF trace antenna Peak Gain: 1.06 dBi Note(s) : 1. Antenna information is based on the document provided. Report No.: HA2511-0263-R05-01 5 / 8 This document may not be copied or reproduced (reprinted) without written consent by HCT America, Inc. HCT America, Inc., 840 Yosemite Way, Milpitas, CA 95035, USA TEL: +1-510-933-8848 2. INTRODUCTION 2.1. RF Exposure Exemptions for Single Source (A) 1-mW Blanket Exemption Per § 1.1307(b)(3)(i)(A), a single RF source is exempt RF device if the available maximum time-averaged power is no more than 1 mW, regardless of separation distance. This exemption applies to all operating configurations and exposure conditions, for the frequency range 100 kHz - 100 GHz, regardless of fixed, mobile, or portable device exposure conditions. This is a standalone exemption, and it cannot be applied in conjunction with any other test exemption. (B) SAR-Based Exemption A more comprehensive exemption, considering a variable power threshold that depends on both the separation distance and power, is provided in § 1.1307(b)(3)(i)(B). This exemption is applicable to the frequency range between 300 MHz - 6 GHz, with test separation distances between 0.5 cm and 40 cm, and for all RF sources in fixed, mobile, and portable device exposure conditions. Accordingly, a RF source is considered an RF exempt device if its available maximum time-averaged (matched conducted) power or its effective radiated power (ERP), whichever is greater, are below a specified threshold (P th ). (C) MPE-Based Exemption MPE-based exemption is provided in the table 1, § 1.1307(b)(3)(i)(C), for a much wider frequency range, from 300 kHz - 100 GHz. The table 1 applies to any RF source (i.e. single fixed, mobile, and portable transmitters) and specifies power and distance criteria for each of the five frequency ranges used for the MPE limits. These criteria apply at separation distances from any part of the radiating structur…

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CETECOM Inc. 411 Dixon Landing Road  Milpitas, CA 95035  U.S.A. Phone: + 1 (408) 586 6200  Fax: + 1 (408) 586 6299  E-mail: [email protected]  http://www.cetecom.com CETECOM Inc. is a Delaware Corporation with Corporation number: 2113686 Page 1 of 39 © Copyright by CETECOM Antenna Gain Spherical Pattern Measurement. TESLA BMB Antenna REPORT Date of Report: 2025-12-22 Date of issue: 2025-12-22 Report Copy No.: 1.0 The test results of this test report relate exclusively to the test item specified in Identification of the Equipment under Investigation. The CETECOM Inc. USA does not assume responsibility for any conclusions and generalizations drawn from the test results with regard to other specimens or samples of the type of the equipment represented by the test item. The test report may only be reproduced or published in full. Reproduction or publication of extracts from the report requires the prior written approval of the CETECOM Inc USA. CETECOM Inc. 411 Dixon Landing Road  Milpitas, CA 95035  U.S.A. Phone: + 1 (408) 586 6200  Fax: + 1 (408) 586 6299  E-mail: [email protected]  http://www.cetecom.com CETECOM Inc. is a Delaware Corporation with Corporation number: 2113686 Page 2 of 39 © Copyright by CETECOM Manufacturer Tesla Model BMB CTIA Request # N/A Wi-Fi Alliance CID # N/A EUT ID / SN / IMEI SN: STES1342500009 FCC ID Number 2AEIM-1930238 Hardware Version E Software Version N/A Configuration of Primary Mechanical Mode N/A Test Plan Revision N/A Test date 11/20/2025 Temperature / Humidity 72.7 0 F / 47.1% Applicant’s Name: Tesla Address: 3500 Deer Creek, Palo Alto, CA 94304 Contact Person: Chenchen Gao Phone No. -- Fax: -- e-mail: [email protected] CETECOM Inc. 411 Dixon Landing Road  Milpitas, CA 95035  U.S.A. Phone: + 1 (408) 586 6200  Fax: + 1 (408) 586 6299  E-mail: [email protected]  http://www.cetecom.com CETECOM Inc. is a Delaware Corporation with Corporation number: 2113686 Page 3 of 39 © Copyright by CETECOM EUTs used for each test EUT # EUT CATL/CHAMBER USED Radio Modes Band(s) Test Types(s) Test Conditions 1 BMB CETECOM/OTA4 Passive antenna 2400 MHz 2410 MHz 2420 MHz 2430 MHz 2440 MHz 2450 MHz 2460 MHz 2470 MHz 2480 MHz 2490 MHz 2500 MHz Gain FS CETECOM Inc. 411 Dixon Landing Road  Milpitas, CA 95035  U.S.A. Phone: + 1 (408) 586 6200  Fax: + 1 (408) 586 6299  E-mail: [email protected]  http://www.cetecom.com CETECOM Inc. is a Delaware Corporation with Corporation number: 2113686 Page 4 of 39 © Copyright by CETECOM • Contents 1 SUMMATION TEST REPORT – Gain measurements .................................................................................................................................. 6 2 Physical Layout and Site Description .............................................................................................................................................................. 8 2.1 Wireless Test Facility ............................................................................................................................................................................. 8 2.2 Anechoic Rectangular Chamber ............................................................................................................................................................. 8 2.3 Phi Axis & Theta Axis Positioner ........................................................................................................................................................... 9 2.4 SAM Head Phantom / Hand Phantoms ................................................................................................................................................... 9 2.5 Quiet Zone .............................................................................................................................................................................................. 9 2.6 Howland Company Model QR-1 Quad Ridge Horn Antenna .............................................................................................................. 10 2.7 Circularly Polarized Communication Antenna ..................................................................................................................................... 10 2.8 Test Equipment ..................................................................................................................................................................................... 10 2.9 AMS32 Software .................................................................................................................................................................................. 11 3 Test Method ................................................................................................................................................................................................... 12 3.1 Total Radiated Power ............................................................................................................................................................................ 12 3.2 Total Isotropic Sensitivity ..................................................................................................................................................................... 12 4 Measurement Uncertainty OTA 4 Chamber .................................................................................................................................................. 14 4.1 TRP uncertainty standard ...................................................................................................................................................................... 14 4.2 TRP uncertainty alternate methods (worst case) .................................................................................................................................. 16 4.3 TIS uncertainty.............................................................................................................................................................…

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TEST REPORT APPLICANT TESLA INC MODEL NAME 1930238 FCC ID 2AEIM-1930238 ISED ID 20098-1930238 REPORT NUMBER HA2511-0263-R04-01 Report No.: HA2511-0263-R04-01 1 / 44 This document may not be copied or reproduced (reprinted) without written consent by HCT America, Inc. 840 Yosemite Way, Milpitas, CA 95035, USA TEL: +1-408-649-3494 T E S T R E P O R T Date of Issue January 29, 2026 Test Site HCT America, Inc. 840 Yosemite Way, Milpitas, CA 95035, USA Applicant TESLA INC Applicant Address 3500 Deer Creek Rd, Palo Alto, CA 94304 U.S.A FCC ID 2AEIM-1930238 ISED ID 20098-1930238 Model Name 1930238 EUT Type PCBA Modulation Type GFSK FCC Classification Digital Transmission System (DTS) FCC Rule Part(s) 47 CFR FCC PART C § 15.247/15.205/15.207/15.209 ISED Rule Part(s) RSS-247 ISSUE 4 RSS-GEN ISSUE 5 Amd 2 Test Procedure ANSI C63.10-2020, KDB 558074 D01 v05r02 The device bearing the trade name and model specified above, has been shown to comply with the applicable technical standards as indicated in the measurement report and was tested in accordance with the measurement procedures required. The results of testing in this report apply only to the product which was tested. Other similar equipment will not necessarily produce the same results due to production tolerance and measurement uncertainties. I attest to the accuracy of data. All measurements reported herein were performed by me or were made under my supervision and are correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the qualifications of all persons taking them. HCT America, Inc. certifies that no party to application has been denied the FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C 862 Tested By Reviewed By John Park Dan Coronia Test Engineer Technical Manager Report No.: HA2511-0263-R04-01 2 / 44 This document may not be copied or reproduced (reprinted) without written consent by HCT America, Inc. 840 Yosemite Way, Milpitas, CA 95035, USA TEL: +1-408-649-3494 REVISION HISTORY The revision history for this document is shown in table. TEST REPORT NO. REVISION DATE DESCRIPTION HA2511-0263-R04 0 December 15, 2025 Initial Issue HA2511-0263-R04-01 1 January 29, 2026 Change model name: BMB to 1930238 Change RF specification: BLE to 2.4GHz ISM Report No.: HA2511-0263-R04-01 3 / 44 This document may not be copied or reproduced (reprinted) without written consent by HCT America, Inc. 840 Yosemite Way, Milpitas, CA 95035, USA TEL: +1-408-649-3494 TABLE OF CONTENTS 1. GENERAL INFORMATION .................................................................................................................................. 4 2. METHODOLOGY ............................................................................................................................................... 6 3. INSTRUMENT CALIBRATION .............................................................................................................................. 6 4. FACILITIES AND ACCREDITATIONS ...................................................................................................................... 7 5. ANTENNA REQUIREMENTS ............................................................................................................................... 8 6. MEASUREMENT UNCERTAINTY ......................................................................................................................... 9 7. DESCRIPTION OF TESTS ................................................................................................................................... 10 8. SUMMARY OF TEST RESULTS ........................................................................................................................... 22 9. TEST RESULT ................................................................................................................................................... 25 9.1. DUTY CYCLE ......................................................................................................................................... 25 9.2. 6 dB BANDWIDTH / 99% BANDWIDTH MEASUREMENT .......................................................................... 26 9.3. OUTPUT POWER .................................................................................................................................. 28 9.4. POWER SPECTRAL DENSITY .................................................................................................................. 30 9.5. CONDUCTED BAND EDGE & SPURIOUS EMISSIONS ................................................................................ 32 9.6. RADIATED SPURIOUS EMISSIONS .......................................................................................................... 34 9.7. RADIATED RESTRICTED BAND EDGES ..................................................................................................... 40 9.8. RECEIVER SPURIOUS EMISSION ............................................................................................................. 41 10. LIST OF TEST EQUIPMENT ............................................................................................................................. 43 APPENDIX A. TEST SETUP PHOTOS ...................................................................................................................... 44 APPENDIX B. PHOTOGRAPHS OF EUT .................................................................................................................. 44 Report No.: HA2511-0263-R04-01 4 / 44 This document may not be copied or reproduced (reprinted) without written consent by HCT America, Inc. 840 Yosemite Way, Milpitas, CA 95035, USA TEL: +1-408-649-3494 1. GENERAL INFORMATION EUT DESCRIPTION Model 1930238 Product Name Battery monitor board Serial Number Conducted: STES13425000023 Radiated: STES13425000031 Power Supply 3.3 V d.c. RF Specification 2.4GHz ISM Transmitter Ch…

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