2BDRB-EM3-DXBBMS

天津动芯科技有限公司 TianjinD-powercoreCo.,LTD VersionV0.4 FileNo.GG-DXB30A TEL:86-22-87895805-861FAX:86-22-87895805-87 ADD：BlockC,No.8,HaitaiEastRoad,XiqingDistrict,TianjinWEB：www.d-powercore.com BMSSPECIFICATION Clientconfirm：Date： Remark：Pleasesignbackthisfileaftertheproductpassesthetest. Thelaterbatchwillbemadeaccordingtothisfile! Series ： DXB30 BMSModel : DXB30A-1030BU-1001 Writer ： 李如意 Audit ： 王磊 Approve ： 王磊 天津动芯科技有限公司 TianjinD-powercoreCo.,LTD VersionV0.4 FileNo.GG-DXB30A TEL:86-22-87895805-862FAX:86-22-87895805-87 ADD：BlockC,No.8,HaitaiEastRoad,XiqingDistrict,TianjinWEB：www.d-powercore.com Changehistory DateVersionDescribeHardwareversionSoftwareversion 2020.03.27V0.1Specificationpreparation V1.5V2.07 2020.05.26V0.2 Theprogramversionnumber fromV2.07toadapttothenew 2.12PCnewtestsoftware V1.5V2.12 2020.8.12V0.3 V0.2bugCorrectionMOS numberchangedfrom5to4. ConfigurationChangeThe absolutevalueofthesleep currentischangedfrom120to 200 V1.5V2.12 2020.10.29V0.4 Thechargebalanceturn-off currentischangedfrom100mA to20000mA V1.5V2.12 天津动芯科技有限公司 TianjinD-powercoreCo.,LTD VersionV0.4 FileNo.GG-DXB30A TEL:86-22-87895805-863FAX:86-22-87895805-87 ADD：BlockC,No.8,HaitaiEastRoad,XiqingDistrict,TianjinWEB：www.d-powercore.com Productfeatures SupportUARTcommunication SupportBootloadertofacilitateprogramupgradeandmaintenance. Accurateresidualcapacityestimation(SOC),mainlydynamiccoulombs,static opencircuitvoltagecompensationtoensuremoreaccuratecapacity. Lithiumcyclesstatistics. Recordthelongesttimeofuncharged. Clockfunction(RTC) Perfectbatteryprotectionmechanism. Lowpowerdesign,automaticsleepfunction. Built-inbalancefunction. SmartLEDplatewiththefunctionsofsoft-switchanderrorindication. 天津动芯科技有限公司 TianjinD-powercoreCo.,LTD VersionV0.4 FileNo.GG-DXB30A TEL:86-22-87895805-864FAX:86-22-87895805-87 ADD：BlockC,No.8,HaitaiEastRoad,XiqingDistrict,TianjinWEB：www.d-powercore.com Catalogue Changehistory..............................................................................................................................2 Productfeature.............................................................................................................................5 1、Productsizeandwiring......................................................................................................6 1.1Productphysicaldrawing......................................................................................................6 1.2Productsize................................................................................................................................7 2、Electricalpropertiesofproducts...................................................................................9 3、LEDdisplayspecification.................................................................................................11 4、Operatinginstructions......................................................................................................11 4.1Poweronandoff....................................................................................................................11 4.2SafetyofBattery....................................................................................................................11 5、Actualstateofproduct....................................................................................................13 5.1Productphysicaldrawing...................................................................................................13 5.2Confirmthehardwareversionoftheproduct...........................................................14 Maindevicemodelandquantity...........................................................................................15 5.3Productvalidationprogramversion..............................................................................15 5.4Productparametersettings..............................................................................................16 5.5Protocol....................................................................................................................................17 5.6Productpackaging...............................................................................................................18 天津动芯科技有限公司 TianjinD-powercoreCo.,LTD VersionV0.4 FileNo.GG-DXB30A TEL:86-22-87895805-86 5 FAX:86-22-87895805-87 ADD：BlockC,No.8,HaitaiEastRoad,XiqingDistrict,TianjinWEB：www.d-powercore.com Productfeature SupportsUARTcommunication. SupportBootloader,convenientprogramupgrademaintenance. AccurateResidualcapacityestimation(SOC),dynamicbasedoncoulombmeter, staticopencircuitvoltagecompensationtoensuremoreaccuratecapacity. Lithiumbatterycyclecount. Recordthelongestunchargedtime. Supportclock（RTC） Perfectbatteryprotectionmechanism. Lowpowerdesign,automaticsleepfunction. Supportsthebalancingfunction. 天津动芯科技有限公司 TianjinD-powercoreCo.,LTD VersionV0.4 FileNo.GG-DXB30A TEL:86-22-87895805-86 6 FAX:86-22-87895805-87 ADD：BlockC,No.8,HaitaiEastRoad,XiqingDistrict,TianjinWEB：www.d-powercore.com 1、Productsizeandwiring 1.1Productphysicaldrawing 天津动芯科技有限公司 TianjinD-powercoreCo.,LTD VersionV0.4 FileNo.GG-DXB30A TEL:86-22-87895805-86 7 FAX:86-22-87895805-87 ADD：BlockC,No.8,HaitaiEastRoad,XiqingDistrict,TianjinWEB：www.d-powercore.com 1.2Productsize Fig1-1SizeofDXB30ASeries（mm） Productdimensiontoleranceis0.5mm. 1.3Productassemblydiagram Height:13mm 天津动芯科技有限公司 TianjinD-powercoreCo.,LTD VersionV0.4 FileNo.GG-DXB30A TEL:86-22-87895805-86 8 FAX:86-22-87895805-87 ADD：BlockC,No.8,HaitaiEastRoad,XiqingDistrict,TianjinWEB：www.d-powercore.com Fig1-3Systemassemblydiagram(10S) 天津动芯科技有限公司 TianjinD-powercoreCo.,LTD VersionV0.4 FileNo.GG-DXB30A TEL:86-22-87895805-86 9 FAX:86-22-87895805-87 ADD：BlockC,No.8,HaitaiEastRoad,XiqingDistrict,TianjinWEB：www.d-powercore.com 2、Electricalpropertiesofproducts projectThenumericalunit Batterypackform10S Rateddischargecurrent30A FitthetypeofcellTernarylithium Chargingvoltage42.3V Chargingcurrent<20A Balancecurrent<60mA Nocommunicationworkingcurrent<10m…

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Changzhou Emissions Free Technology Co., Ltd. Product Similarity Declaration Product name: BMS Model name: DXB30A, DXB46A FCC ID: 2BDRB-EM3-DXB We (Changzhou Emissions Free Technology Co., Ltd.) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.,), same mechanical structure and design (including product enclosure, materials, etc.,), the only difference is the model name, and the appearance color is different. Signature: Name: Wen Ming Yue Title: Manager Shenzhen, June 26, 2023

FCC ID: 2BDRB-EM3-DXB FCC ID: 2BDRB-EM3-DXB

FCC ID: 2BDRB-EM3-DXB FCC ID: 2BDRB-EM3-DXB FCC ID: 2BDRB-EM3-DXB FCC ID: 2BDRB-EM3-DXB ANT FCC ID: 2BDRB-EM3-DXB

Report No.: PTC23091909601E-FC02 Page 1 of 7 FCC TEST REPORT FCC ID: 2BDRB-EM3-DXB Product : BMS Model Name : DXB30A,DXB46A Brand : N/A Report No. : PTC23091909601E-FC02 Prepared for Changzhou Emissions Free Technology Co., Ltd. #A401, A HIT Mingseal Technology Building, NO.18 Middle ChangWu Road, WuJin, ChangZhou, Jiangsu, China Prepared by Precise Testing & Certification Co., Ltd. Building 1, No. 6, Tongxin Road, Dongcheng Street, Dongguan, Guangdong, China. Report No.: PTC23091909601E-FC02 Page 2 of 7 TEST RESULT CERTIFICATION Applicant’s name : Changzhou Emissions Free Technology Co., Ltd. Address : #A401, A HIT Mingseal Technology Building, NO.18 Middle ChangWu Road, WuJin, ChangZhou, Jiangsu, China Manufacture's name : Tianjin D-powercore Co.,LTD Address : Building C, No 8,Haitai East Road,Xiqing District,Tianjin,China Product name : BMS Model name : DXB30A,DXB46A Test procedure : FCC CFR47 Part 1.1307(b)(1) Test Date : Nov. 07, 2023 to Nov. 25, 2023 Date of Issue : Dec. 05, 2023 Test Result : PASS This device described above has been tested by PTC, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of PTC, this document may be altered or revised by PTC, personal only, and shall be noted in the revision of the document. Test Engineer: Jack zhou / Engineer Technical Manager: Simon Pu / Manager Report No.: PTC23091909601E-FC02 Page 3 of 7 Contents Page 2 TEST SUMMARY .............................................................................................................................................. 4 3 GENERAL INFORMATION ............................................................................................................................. 5 3.1 GENERAL DESCRIPTION OF E.U.T. ......................................................................................................... 5 4 RF EXPOSURE ................................................................................................................................................. 6 4.1 REQUIREMENTS ....................................................................................................................................... 6 4.2 THE PROCEDURES / LIMIT ........................................................................................................................ 6 4.3 MPE CALCULATION METHOD ................................................................................................................. 7 4.4 TEST RESULT .......................................................................................................................................... 7 Report No.: PTC23091909601E-FC02 Page 4 of 7 2 Test Summary Test Items Test Requirement Result Maximum Permissible Exposure (Exposure of Humans to RF Fields) 15.247 (i) PASS Remark: N/A: Not Applicable Report No.: PTC23091909601E-FC02 Page 5 of 7 3 General Information 3.1 General Description of E.U.T. Product Name : BMS Model Name : DXB30A Additional model : DXB46A Specification : 802.11b/g/n HT20/HT40 Operation Frequency : BLE Number of Channel : 40 channels For DTS Type of Modulation : GFSK, For DTS Antenna installation : PCB antenna Antenna Gain : -4.00 dBi Power supply : DC58V Hardware Version : DXB30-TV1.5;DXB30-BV1.5;EM3-46A;TV0.2;EM3-46A;BV0.2 Software Version : DXB30A-1440BU-1003V0212.hex;DXB46A-1480BUC-1201V3.22 Report No.: PTC23091909601E-FC02 Page 6 of 7 4 RF Exposure Test Requirement : FCC Part 1.1307(b)(1) Evaluation Method : KDB 447498 D01 General RF Exposure Guidance v06 4.1 Requirements Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess limit for maximum permissible exposure. In accordance with 47 CFR FCC Part 2 Subpart J, section 2.1091 this device has been defined as a mobile device whereby a distance of 0.2 m normally can be maintained between the user and the device. 4.2 The procedures / limit (A) Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 (B) Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm2) Averaging Time |E|2,|H|2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz ; *Plane-wave equivalent power density Report No.: PTC23091909601E-FC02 Page 7 of 7 4.3 MPE Calculation Method E (V/m) ＝ d G P   30 Power Density: Pd (W/m²) ＝ 377 2 E E ＝ Electric field (V/m) P ＝ Peak RF output power (W) G ＝ EUT Antenna numeric gain (numeric) d ＝ Separation distance between radiator and human body (m) The formula can be changed to Pd ＝ 2 377 30 d G P    θφ From the peak EUT RF output power, the minimum mobile separation distance, d=0.2m, as well as the gain of the used antenna, the RF power density can be obtained 4.4 Test Result Mode Antenna Gain (numeric) Max. Peak Output Power (dBm) Tune up tolerance (dBm) Max Tune Up Power (mW) Power Density (mW/cm2) Limit of Power Density (mW/cm2) Result 2402 0.40 0.43 0.43±1 0.001390 0.001101 1 Pass ******THE END REPORT******

ReportNo.:RFI-LAB-RF-202311-KK17 QP030-E41 Page1of9 TestingReport CustomerName:ChangzhouEmissionsFreeTechnologyCo.,Ltd. ProductName:BMS SampleModel:DXB30A ReferenceStandard:GB/T9410-2008;ANSI/IEEEStd149-1979 IssueDate:2023.11.29 Engineer:Date: Auditor:Date: Approver:Date: ReportNo.:RFI-LAB-RF-202311-KK17 QP030-E41 Page2of9 Version VersionNo.DateDescriptionFormulateApproval A02023.11.29Forthefirsttime,formulateZkrisEason Contents 1.GeneralInformation.........................................................................................................................3 1.1Generalinformationoftestinginstitutions...........................................................................3 1.2Testingprinciple...................................................................................................................3 1.3Testequipment......................................................................................................................4 1.4Testenvironment...................................................................................................................4 1.5Statement..............................................................................................................................4 2.SampleInformation.........................................................................................................................5 2.1Clientinformation.................................................................................................................5 2.2DescriptionofEUT(S)..........................................................................................................5 2.3EUTappearance....................................................................................................................6 2.4EUTsetupphotooffreespaceOTAtesting.........................................................................6 3.TestResults......................................................................................................................................7 3.1Teststandard.........................................................................................................................7 3.2Testuncertainty.....................................................................................................................7 3.3Testdata................................................................................................................................7 3.3.1Typicalfreespaceefficiencyandgain......................................................................7 3.3.2Typicalfreespaceradiationpattern...........................................................................7 （Thefollowingisblank）................................................................................................................9 ReportNo.:RFI-LAB-RF-202311-KK17 QP030-E41 Page3of9 1.GeneralInformation 1.1Generalinformationoftestinginstitutions Name ShenzhenRFI-LABCommunicationTechnologyCo.,Ltd. Address 103Building1TingweilndustrialPark,No.6,LiufangRoad,Zone 67Xingdong,Xin'anSubdistrict,Bao'anDistrict,Shenzhen,Guangdong,China Tel 13682621346 E-mail [email protected] Equipment Alltheequipmentusedinthereportisfixedin103Building1Tingweilndustrial Park,No.6,LiufangRoad,Zone67Xingdong,Xin'anSubdistrict,Bao'anDistrict, Shenzhen,Guangdong,China 1.2Testingprinciple ReportNo.:RFI-LAB-RF-202311-KK17 QP030-E41 Page4of9 1.3Testequipment EquipmentModelNo.SerialNo.Manufacturer Calibration date Next calibration date OTATest System RayZone-5000 RFI-LAB-RF -D00 GTS2023.3.142025.3.13 Network Analyzer E5071C RFI-LAB-RF -D01 KEYSIGHT2023.5.112024.5.10 Network Analyzer E5071C RFI-LAB-RF -C02 KEYSIGHT2023.5.112024.5.10 1.4Testenvironment Temperature 24.1°C Humidity 58%RH Pressure 100.27kPa 1.5Statement (1)Thetestresultsinthereportareonlyapplicabletothetestedsamplesandthetestedsamples workundertheenvironmentdescribedinthereport. (2)OnlyShenzhenRFI-LABCommunicationTechnologyCo.,Ltd.havetherighttomodifythe report,andthemodificationinformationshallbeannotatedintherevisionform. (3)Anyobjectiontothisreportshallberaisedwithin30daysafterformalconfirmationofthe report. (4)Thisreportisinvalidifthereisanyevidencethatthesampleinformationprovidedisfalsified. (5)Thereportisinvalidwithoutthesignatureoftheauditorandapprover. ReportNo.:RFI-LAB-RF-202311-KK17 QP030-E41 Page5of9 2.SampleInformation 2.1Clientinformation Name ChangzhouEmissionsFreeTechnologyCo.,Ltd. Address / Contacts / Tel / E-mail / Manufacturer / 2.2DescriptionofEUT(S) ProductName BMS SampleModel DXB30A AntennaSize / AntennaType PCBAntenna TestItem Antennagain;Efficiency;Radiationpattern FrequencyRange 2400MHz-2500MHz ReceivedDate 2023.11.28 TestDate 2023.11.29 Remark ThelengthoftheRFcableis90mm ReportNo.:RFI-LAB-RF-202311-KK17 QP030-E41 Page6of9 2.3EUTappearance 2.4EUTsetupphotooffreespaceOTAtesting Planform Frontview ReportNo.:RFI-LAB-RF-202311-KK17 QP030-E41 Page7of9 3.TestResults 3.1Teststandard NameParameterMethodStandardno. Mobile communication antenna Antennagain Genericspecification forantennasusedinthe mobilecommunications GB/T 9410-2008 Radiationpattern Antenna Radiationefficiency IEEEStandardTest ProceduresforAntennas ANSI/IEEEStd 149-1979 Gainanddirectivity 3.2Testuncertainty TheuncertaintywascalculatedonthebasisoftheGUMpublishedbyISO,usingthe inclusionfactorofK=2andthe95%confidenceleveltoexpresstheextended uncertainty. ItemUncertainty Antennagain±0.72dB Radiationefficiency±0.72dB 3.3Testdata 3.3.1Typicalfreespaceefficiencyandgain Frequency/MHz 24002410242024302440245024602470248024902500 PeakGain/dBi -4.68-4.64-4.56-4.52-4.56-4.52-4.33-4.21-4.47-4.24-4.00 Efficiency/% 6.076.056.106.015.915.866.056.196.046.296.56 ReportNo.:RFI-LAB-RF-202311-KK17 QP030-E41 Page8of9 3.3.2Typicalfreespaceradiationpattern (1)X-ZPlane(unit:dBi): (2)Y-ZPlane(unit:dBi): ReportNo.:RFI-LAB-RF-202311-KK17 QP030-E41 Page9of9 (3)X-YPlane(unit:dBi): (4)TypicalFreeSpace3DRadiationPatternat2500MHz(unit:dBi): -------------------------------…

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Page 1 of 51 FCC TEST REPORT FCC ID: 2BDRB-EM3-DXB Product : BMS Model Name : DXB30A, DXB46A Brand : N/A Report No. : PTC23091909601E-FC01 Prepared for Changzhou Emissions Free Technology Co., Ltd. #A401, A HIT Mingseal Technology Building, NO.18 Middle ChangWu Road, WuJin, ChangZhou, Jiangsu, China Prepared by Precise Testing & Certification Co., Ltd Building 1, No. 6, Tongxin Road, Dongcheng Street, Dongguan, Guangdong, China Report No.: PTC23091909601E-FC01 Page 2 of 51 1 TEST RESULT CERTIFICATION Applicant’s name : Changzhou Emissions Free Technology Co., Ltd. Address : #A401, A HIT Mingseal Technology Building, NO.18 Middle ChangWu Road, WuJin, ChangZhou, Jiangsu, China Manufacture's name : Tianjin D-powercore Co.,LTD Address : Building C, No 8,Haitai East Road,Xiqing District,Tianjin,China Product name : BMS Model name : DXB30A, DXB46A Standards : FCC CFR47 Part 15 Section 15.247 Test procedure : ANSI C63.10:2013 Test Date : Nov. 07, 2023 to Nov. 25, 2023 Date of Issue : Dec. 05, 2023 Test Result : Pass This device described above has been tested by PTC, and the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of PTC, this document may be altered or revised by PTC, personal only, and shall be noted in the revision of the document. Test Engineer: Jack zhou / Engineer Technical Manager: Simon Pu / Manager Report No.: PTC23091909601E-FC01 Page 3 of 51 Contents Page 1 TEST RESULT CERTIFICATION ........................................................................................................................ 2 2 TEST SUMMARY ......................................................................................................................................................... 5 2.1 TEST SITE ........................................................................................................................................................... 5 3 GENERAL INFORMATION ..................................................................................................................................... 6 3.1 GENERAL DESCRIPTION OF E.U.T. ................................................................................................................... 6 3.2 CHANNEL LIST .................................................................................................................................................... 7 4 EQUIPMENT DURING TEST .................................................................................................................................. 8 4.1 EQUIPMENTS LIST ............................................................................................................................................ 8 4.2 MEASUREMENT UNCERTAINTY ........................................................................................................................ 10 4.3 DESCRIPTION OF SUPPORT UNITS ................................................................................................................... 11 5 CONDUCTED EMISSION ......................................................................................................................................... 12 5.1 E.U.T. OPERATION .......................................................................................................................................... 12 5.2 EUT SETUP ...................................................................................................................................................... 12 5.3 TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................................ 13 5.4 MEASUREMENT PROCEDURE ........................................................................................................................... 13 5.5 CONDUCTED EMISSION LIMIT ........................................................................................................................... 13 5.6 MEASUREMENT DESCRIPTION ......................................................................................................................... 13 5.7 CONDUCTED EMISSION TEST RESULT ............................................................................................................. 13 6 RADIATED SPURIOUS EMISSIONS ..................................................................................................................... 14 6.1 EUT OPERATION .............................................................................................................................................. 14 6.2 TEST SETUP ..................................................................................................................................................... 15 6.3 SPECTRUM ANALYZER SETUP ......................................................................................................................... 16 6.4 TEST PROCEDURE ............................................................................................................................................ 17 6.5 SUMMARY OF TEST RESULTS .......................................................................................................................... 19 7 CONDUCT BAND EDGE AND SPURIOUS EMISSIONS MEASUREMENT ................................................... 26 7.1 TEST PROCEDURE ............................................................................................................................................ 26 7.2 TEST RESULT ................................................................................................................................................... 27 8 6DB BANDWIDTH MEASUREMENT ..................................................................................................................... 34 Report No.: PTC23091909601E-FC01…

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FCC ID: 2BDRB-EM3-DXB Radiated Spurious Emissions From 30MHz-1000MHz Test frequency from Above 1GHz