Huntkey Electric Co., Ltd RF Exposure Report

Sanvin.Zheng

RF Exposure Report

Shenzhen Huntkey Electric Co., Ltd HKE2500A-A Split type energy storage power supply 2AVYR-HKE2500A-A 2AVYRHKE2500AA hke2500a a

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Report Number: 68.950.24.0459.01

FCC Maximum Permissible Exposure (MPE) Estimation Report

Report Number
Model/HVIN Product Type Applicant Address
Manufacturer Address

: 68.950.24.0459.01

Date of Issue:

2024-08-12

: HKE2500A-A : Split type energy storage power supply : Shenzhen Huntkey Electric Co., Ltd. : Huntkey Industrial Park, XueXiang Village Bantian Street,
LONGGANG DISTRICT, 518129 Shenzhen, China : Shenzhen Huntkey Electric Co., Ltd. : Huntkey Industrial Park, XueXiang Village Bantian Street,
LONGGANG DISTRICT, 518129 Shenzhen, China

Test Result

: Positive

Negative

Total pages including

Appendices

: 9

Any use for advertising purposes must be granted in writing. This technical report may only be quoted in full. This report is the result of a single examination of the object in question and is not generally applicable evaluation of the quality of other products in regular production. For further details, please see testing and certification regulation, chapter A-3.4.

EMC_SZ_FR_84.00 MPE Release 2023-12-01

TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12&13, Zhiheng Wisdomland Business Park, Guankou Erlu, Nantou, Nanshan District,
Shenzhen City, 518052, P. R. China Tel. +86 755 8828 6998, Fax: +86 755 8828 5299

Page 1 of 9

Report Number: 68.950.24.0459.01
1 Table of Contents
1 Table of Contents...................................................................................................................................................2 2 Details about the Test Laboratory ..........................................................................................................................3 3 Description of the Equipment Under Test ..............................................................................................................4 4 Test Specifications .................................................................................................................................................5 5 General Information ...............................................................................................................................................6 6 RF Exposure Requirements...................................................................................................................................7 7 FCC MPE Limits.....................................................................................................................................................8 8 RF Exposure Evaluation (FCC) .............................................................................................................................9
8.1.1 Calculation of Power Density for Single Chain Transmitters ................................................................9 8.1.2 Calculation of Simultaneous Transmission ...........................................................................................9 8.1.3 Conclusion.............................................................................................................................................9

EMC_SZ_FR_84.00 MPE Release 2023-12-01

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Report Number: 68.950.24.0459.01

2 Details about the Test Laboratory

Details about the Test Laboratory Test Site 1

Company name:

TÜV SÜD Certification and Testing (China) Co., Ltd. Shenzhen Branch Building 12 & 13, Zhiheng Wisdomland Business Park, Guankou Erlu, Nantou, Nanshan District, Shenzhen, Guangdong, China

Telephone:

86 755 8828 6998

Fax:

86 755 8828 5299

FCC Registration No.:

514049

FCC Designation Number: CN5009

EMC_SZ_FR_84.00 MPE Release 2023-12-01

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Report Number: 68.950.24.0459.01

3 Description of the Equipment Under Test

Product:

Split type energy storage power supply

Model no.:

HKE2500A-A

FCC ID:

2AVYR-HKE2500A-A

Ratings:

44.4VDC, 70Ah, 3108Wh rechargeable Li-ion battery or 10.516VDC input or 17-72VDC input or 120VAC 50/60Hz, 15A

RF Transmission Frequency:

2402MHz-2480MHz for Bluetooth Low Energy 2412MHz-2462MHz for 802.11b/g/n20

No. of Operated Channel:

40 for Bluetooth Low Energy 11 for 2.4GHz Wi-Fi

Modulation:

802.11b: BPSK, QPSK, CCK, 802.11g/802.11n20: BPSK, QPSK, 16-QAM, 64-QAM

Antenna Type:

Internal Antenna

Antenna Gain:

-1.81dBi max for 2.4GHz

Description of the EUT:

The Equipment Under Test (EUT) is a Split type energy storage power supply supports Bluetooth Low Energy / 2.4GHz Wi-Fi functions

EMC_SZ_FR_84.00 MPE Release 2023-12-01

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Report Number: 68.950.24.0459.01

4 Test Specifications

ANSI Std C95.1-1992
KDB 447498 D01 CFR § 2.1091

Test Standards Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz 300 GHz.(IEEE Std C95.1-1991) General RF Exposure Guidance v06 Radiofrequency radiation exposure evaluation: mobile devices.

EMC_SZ_FR_84.00 MPE Release 2023-12-01

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Report Number: 68.950.24.0459.01
5 General Information
Any use for advertising purposes must be granted in writing. This technical report may only be quoted in full. This report is the result of a single examination of the object in question and is not generally applicable evaluation of the quality of other products in regular production. For further details, please see testing and certification regulation, chapter A-3.4.

Prepared By Project Engineer
Approved by Project Manager

2024-08-12 Date
2024-08-12 Date

Joe Gu Name
John Zhi Name

Signature Signature

EMC_SZ_FR_84.00 MPE Release 2023-12-01

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Report Number: 68.950.24.0459.01
6 RF Exposure Requirements
An estimation of MPE in this application for product is used to ensure if it complies with the rules of the standard in the regulation list above. Maximum permissible exposure (MPE) refers to the RF energy that is acceptable for human exposure. It is broken down into two categories, Occupational/controlled and General population/uncontrolled. Occupational/controlled limits apply in situations in which persons are exposed as a consequence of their employment provided those persons are fully aware of the potential for exposure and can exercise control over their exposure. Limits for occupational/controlled exposure also apply in situations when an individual is transient through a location where occupational/controlled limits apply provided he or she is made aware of the potential for exposure. General population/uncontrolled exposures apply in situations in which the general public may be exposed, or in which persons that are exposed as a consequence of their employment may not be fully aware of the potential for exposure or cannot exercise control over their exposure. A rough estimation of the expected exposure in power flux density on a given point can be made with the following equation:
Where: S = power density P = power input to the antenna G = numeric gain of the antenna in the direction of interest relative to an isotropic radiator R= distance to the centre of radiation of the antenna EIRP = P*G
The antenna of the product, under normal use condition is at least 20 cm away from the body of the user. Warning statement to the user for keeping at least 20cm separation distance and the prohibition of operating to a person has been printed on the user's manual. Therefore, the S of the device is calculated with R=20cm, and if it is below the limit S, then we can conclude the device complies with the rules.

EMC_SZ_FR_84.00 MPE Release 2023-12-01

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Report Number: 68.950.24.0459.01
7 FCC MPE Limits
We analysis if it comply with the limits for General population/uncontrolled exposure. The FCC MPE limits for field strength and power density are given in 47CFR 1.1310(Table below). These limits are generally based on recommended exposure guidelines published by the National Council on Radiation Protection and Measurements (NCRP), and also partly based on guidelines recommended by the American National Standards Institute (ANSI) in Section 4.1 of ANSI/IEEE C95.1.

EMC_SZ_FR_84.00 MPE Release 2023-12-01

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Report Number: 68.950.24.0459.01

8 RF Exposure Evaluation (FCC)
8.1.1 Calculation of Power Density for Single Chain Transmitters

Mode
Bluetooth Low Energy
2.4GHz Wi-Fi

EIRP (dBm)
8.6
16.6

EIRP (mW)
7.244
45.709

R (cm)
20
20

S (mW/cm2)
0.00144
0.00909

8.1.2 Calculation of Simultaneous Transmission

Limit (mW/cm2)
1.0
1.0

MPE Ratio 0.144% 0.909%

In order to ensure compliance with the EMF for a controlled environment, the sum of the ratios of the power density to the corresponding EMF should not exceed unity. That is
Si 1
S i Lim it,i
The product also has multiple transmitters. The simultaneous transmission possibilities are as below:

No.

Simultaneous Tx Combination

MPE Ratio

2.4GHz Wi-Fi + Bluetooth Low Energy

1.053%

Limit 1.0

8.1.3 Conclusion

According to the table above, we can conclude that the limit percentage of above supporting frequency bands calculation results are less than 1, therefore, the product meets the requirements.

---THE END OF REPORT---

EMC_SZ_FR_84.00 MPE Release 2023-12-01

Page 9 of 9

Related FCC IDs:

2AVYR-HKE2500A-A - Shenzhen Huntkey Electric Co., Ltd Split type energy storage power supply [-HKE2500A-A]

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