UL is the abbreviation of Underwriter Laboratories Inc. (Underwriter Laboratories Inc.). The UL Safety Laboratory is the most authoritative in the United States and the largest private institution engaged in safety testing and identification in the world. It is an independent, not-for-profit, professional organization that conducts experiments for public safety. Unlike FCC certification, UL certification is a safety certification. UL is mainly engaged in product safety certification and operating safety certification business. Its ultimate purpose is to obtain products with a fairly safe level for the market, and to contribute to the assurance of personal health and property safety. . In the United States, UL is the symbol of safety marks for consumers, and globally, UL is one of the most trusted conformity assessment providers for manufacturers.

The UL2056 standard is a safety standard introduced by the United States for mobile power terminal products. It is applicable to products with DC power input and output of 60Vdc, but does not include products powered by external solar panels or vehicle 12Vdc power ports.

UL2056 report test items

1. Short circuit test

2. Abnormal charging test

3. Overcharge test

4. Forced discharge test

5. Restricted power test

6. Temperature test of the original battery pack

7. Battery pack surface temperature test

8. 250N constant force test

9. Drop test

UL2056 testing requirements

The main tests for the mobile power supply include: electrical tests related to overcharging, short circuit, etc.; mechanical tests for the use process such as drop and extrusion; the detection of the marked input/output current and power capacity; the power overload test and integration of the output port Flammability testing of PV cells (if applicable), etc.

UL2056 requirements for internal cells

1. Lithium batteries need to have UL1642 standard certification

2. Nickel cells need to have UL2054 standard certification

Amazon UL test report processing process

1. Project determination: confirm the UL standard on which the test is based, the cost and time of certification, the number of samples, etc.;

2. Data preparation: According to the requirements of UL, the enterprise prepares various data or documents required for certification;

3. Sample delivery test: The enterprise sends samples to ZRLK testing laboratory for product testing;

4. Issuing the report: The product test results meet the requirements of UL standards, and the test report is officially issued;

5. Factory audit: UL will conduct the first factory inspection of the production factory to ensure compliance with the standard requirements;

6. Use of the logo: After the audit meets the requirements, the applicant is officially authorized to use the UL logo.

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