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Introduction
Before the battery enters the American market, it is often required to enter the UL certification. Although the UL certification is voluntary, the US Customs will release the product bearing the “ul” mark. Without this mark, complicated inspection procedures are required. And when a safety incident occurs, the CPSC will also use the UL standard as the basis for the decision. Therefore, in the United States, many sellers refuse to sell goods without the "UL" mark in order to avoid trouble. Batteries that enter the United States as parts of electrical products require UL certification.
Product Range
Lithium batteries (groups), spare batteries (groups), home and commercial batteries (groups)
standard test
UL1642 Lithium Battery (Group) Standard
UL2054 Household and Commercial Battery (Group)
Lithium Battery UL Certification Test Project
1. Test item: Short circuit test (BE-1000A or BE-1000W)
Experimental conditions: The battery is short-circuited to the positive and negative electrodes at room temperature and 60°C±2°C with a lead less than 100 milliohms under full charge.
Experimental requirements: The battery does not explode, no fire
Battery test reaction: The battery has no explosion and no fire. Leakage of electrolyte.
2. Test item: Overcharge test
Experimental conditions: The battery was charged with a constant current and constant voltage of 3C and 10V under full charge. When the current reached 100mA, the battery was charged to a constant voltage for 48 hours.
Experimental requirements: The battery does not explode, no fire.
Battery test reaction: battery drum, liquid leakage. But no explosion, no fire.
3. Test item: Squeeze test (BE-6045 Battery Squeeze Tester)
Experimental conditions: Under full power conditions, a force of 13 kN was applied to the two pistons with a diameter of 32 mm on the side of the battery until the pressure on the piston reached 17.2 MP.
Experimental requirements: The battery does not catch fire and does not explode.
Battery experimental reaction: The battery is seriously deformed, the battery temperature rises, and the maximum temperature reaches 147°C. The battery has no explosion, no fire, and electrolyte leakage.
4. Test item: Thermal shock test (BE-101 series thermal shock test box)
Experimental conditions: Under full electrical conditions, the temperature rises in the high temperature cabinet by 5°C/min, and the temperature reaches 150°C for 10 minutes.
Experimental requirements: The battery does not explode, no fire
Battery experimental reaction: In total, 15 batteries (10 Ah) were tested and 10 (7.5 Ah) were used, and the battery did not react. According to test engineers, this experiment shows that many manufacturers' batteries are hard to pass regardless of whether they are small or large. Experiments have certain risks.
5. Test Item: Impact Test (BE-5066 Battery Impact Tester)
Experimental conditions: Under full electrical conditions, a steel rod with a diameter of 15.8 mm was placed on the battery. At a distance of 61 cm from the battery, a 9.1 kg weight was free to fall on the steel rod.
Experimental requirements: The battery has no explosion, no fire
Battery test reaction: The battery was deformed, the battery plane became concave, and the battery temperature began to rise. 15 batteries had two temperatures of 124°C, but the battery did not explode and there was no fire. Other battery temperatures range from 35-82°C.