Battery UL certification

Batteries often have to enter UL certification before entering the US market. Although UL certification is voluntary, the US Customs releases products with the "ul" mark. Without this mark, complicated inspection procedures are required. And when a safety incident occurs, the Fire Product Safety Committee (CPSC) will also use UL standards as the basis for judgment. Therefore, in the United States, many sellers refuse to sell products without the "UL" mark in order to avoid trouble. As a component of electrical products enters the United States, batteries require UL certification.

Product Range

Lithium batteries (groups), spare batteries (groups), household and commercial batteries (groups)

standard test

UL1642 lithium battery (group) standard

UL2054 household and commercial batteries (group)

Lithium battery UL certification test items

1. Test item: short circuit test (BE-1000A or BE-1000W)

Experimental conditions: Under the condition of full power, the positive and negative poles of the battery are short-circuited at room temperature and 60℃±2℃ with wires less than 100 milliohms.

Experimental requirements: the battery does not explode or fire

Battery test response: The battery has no explosion or fire. There is electrolyte leakage.

2. Test item: overcharge test

Experimental conditions: The battery is charged with 3C, 10V constant current and constant voltage under the condition of full power, and when the current reaches 100mA, the battery is charged to constant voltage for 48 hours.

Experimental requirements: the battery does not explode or fire.

Battery test reaction: the battery drum, there is liquid leakage. But no explosion, no fire.

3. Test item: extrusion test (BE-6045 battery extrusion tester)

Experimental conditions: Under the condition of full power, a force of 13kN is applied to the two pistons with a diameter of 32mm on the side of the battery until the pressure on the piston reaches 17.2MP.

Experimental requirements: The battery does not fire or explode.

Battery test reaction: the battery is severely deformed, the battery temperature rises, the highest temperature reaches 147 ℃, 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 the condition of full power, the temperature in the high temperature box will rise by 5℃/min, and the temperature will reach 150℃ and leave it for 10 minutes

Experimental requirements: the battery does not explode or fire

Battery test response: A total of 15 batteries (10Ah) 10 and (7.5Ah) 5 batteries were tested, and there was no reaction in the battery. According to the test engineer, this experiment is difficult for many manufacturers to pass, whether it is small or large capacity, and the experiment is dangerous.

5. Test item: Impact test (BE-5066 battery impact testing machine)

Experimental conditions: Under the condition of full power, a steel rod with a diameter of 15.8mm is placed on the battery, and at a distance of 61cm from the battery, an object weighing 9.1kg falls freely on the steel rod.

Test requirements: no explosion, no fire

Battery test reaction: the battery deformed, the battery plane became concave, and the battery temperature began to rise. The temperature of two of the 15 batteries reached 124°C, but the battery did not explode or catch fire. The temperature of other batteries ranges from 35 to 82°C.

If you have the above requirements for testing and certification, you can call our company ZRLK to inquire about the specific cost and cycle. There are professional engineers here to provide comprehensive technical services such as testing, certification, appraisal, technical consultation, and solutions for the majority of corporate customers. ZRLK has focused on testing and certification of batteries and peripheral consumer products for 15 years, always paying attention to changes in national regulations, and providing customers with one-stop certification services in multiple countries and regions to ensure that your products quickly enter the target market.