Portable energy storage power supply is also called portable AC and DC power supply, portable emergency power supply, etc., according to different application scenarios can be defined a lot of called. Generally speaking, the energy storage power supply is a large-capacity mobile power supply, a machine that can store electrical energy. Its working principle, AC 220V output, can drive a low-power rice cooker, cook rice, can bring a coffee machine to make coffee, can be used for lighting, can use a power socket, and can charge a variety of electrical appliances. It not only has all the functions of online UPS, but also provides stable power protection for key loads, optimizes UPS performance, and reasonably saves capital investment for oil pumps, reactive power compensation equipment and voltage stabilizing equipment.
At present, energy storage power supply in Amazon has become a relatively popular product for electronics retailers. However, with the gradual increase of sellers selling such products, the audit of the platform is also increasing. UL 2743 report must be provided, otherwise the product link will be directly removed from the shelf! Because Amazon's background inspection of products is captured by Amazon robots! Once it is spot-checked, and if the seller cannot provide UL 2743 report within 48 hours, all the products sold will be removed from the shelves! Amazon's product release policy requires that all large energy storage power devices must provide UL 2743 report.
1. UL 2743 report what is it? Which products need to handle UL 2743 report what?
1. UL 2743 standard covers portable and mobile power supplies equipped with one or more batteries, electrochemical capacitors or electrochemical capacitor modules. If equipped with batteries, the batteries should be lead-acid or lithium-ion batteries. The power pack has one or more inputs and one or more outputs. For power packs with a boost function.
2. UL 2743 standard covers large mobile power for outdoor, temporary outdoor, or indoor use. The outdoor use package is intended for unrestricted outdoor use. The temporary outdoor use bag is intended to be used outdoors in limited wet conditions and always stored indoors. Packaging bags for indoor use only are intended to be stored indoors and used indoors, and are not intended to be used outdoors at any time. Only in any case, the power box with the boost function cannot be regarded as indoor use.
3. UL 2743 standard covers power packs equipped with additional systems, such as air compressors (fuel-free type) for inflating tires or other inflatable items, or lights, flashlights, etc. as warning lights for oncoming traffic. These functions are also powered by internal batteries.
4. UL 2743 standard covers power pack options, such as lights, voltmeters, internal air compressor components, related meters, inverters, vehicle adapters and internal batteries, and charging of internal batteries when these options are integrated with the power pack.
5. UL 2743 standard not Included wiring or cable for the charging function of electric vehicle charging equipment.
6. UL 2743 standard not Included mobile power sources covered in UL's 2056 Outline of Investigation for Mobile Power Sources.
PS: Portable energy storage power supply inside the lithium ion battery needs UL 1642, UL 62133, UL 1973, UL 2580 any one of these criteria .
ANSI of the United States and SCC of Canada approved the safety standard ANSI/CAN/for mobile energy storage power supply on April 14, 2023/ UL 2743:2023. This new edition is an important revision of the previous versions of UL 2743:2018 and UL 2743:2020 and includes a series of standard optimizations.
Part main update content
new definition of mobile, introduction 18kg the concept. For non-fixed installation equipment, the equipment weight is less than 18kg, or provides a device that is easy to move, can be classified as mobile energy storage products.
Hazardous voltage limits have been optimized (for indoor use products, the safe voltage limit is increased to 42.4Vpk or 60Vdc; for outdoor products or temporary outdoor products, the previous limit of 21.2Vpk or 30VDC is maintained).
For AC outlets other than 15A ungrounded outlets, additional evaluation criteria (including UL 1012-Overcurrent Protection Requirements for AC Outlets and other relevant requirements).
Vehicle charging voltage range extended to support 24V(older standard only supports 12V input).
Added functional grounding requirements (including structural and identification requirements) for double insulation isolation products.
For lithium batteries and lead-acid batteries, add multiple standard-compliant options (for example, for lithium batteries, it can be satisfied. UL 1642, UL 62133, UL 1973, UL 2580 any one of these criteria is sufficient).
Improve the leakage current test method, and supplement the test requirements for dangerous voltage to safe voltage port (e. g. between inverter AC port and low voltage terminal).
For evaluation of critical safety circuits, add component single failure as an alternative to UL 60730-1.
For lithium battery packs greater than 1kWh, increase the single cell failure test requirements (refer to UL 1973 single cell thermal diffusion test method).
Revised the drop test requirements to specify a 0.9m drop test for products under 18kg.
Optimize the test method of the emergency start output and clearly identify the requirements (current and duration).
2. UL 2743 what items does the report test?
1. Power Input Test
2. Normal charging operation test
3. Lithium charging system test
4. Capacitor discharge test
5. Leakage current test
6. Normal temperature test
7. Insulation withstand voltage test
8. Leakage current under humidity regulation
9. Abnormal operation test
10. Vibration test
11. Grounding Connectivity
12. Overload test
13. Stress Relief Test
14. Shell strength test
3. UL2743 what information is required for the report? What is the cost?
1. Provide product specifications
2. Determine the cost and sign a quotation contract.
3. Fill in the application form
4. Send samples
5. Test qualified
6. Issue reports and certificates
Test period: about 2 weeks
The above is the introduction of UL2743 certification by Ankejie Testing and Certification. It is for reference only. Some materials come from Jiran Carbon Technology and do not represent the viewpoint of Ankejie Testing Technology and are responsible for its authenticity. If you are involved in the content of the work, copyright and other issues, please contact us within 30 days, we will delete the content in the first time!
