Battery UL certification is usually divided into two types, UL1642 and UL2054.
UL1642 is the first standard for lithium battery safety introduced by the American Safety Testing Laboratory Corporation (also known as UL Corporation, Underwriterslaboratories Inc.) in October 1985. It is the most widely recognized assessment of lithium battery cells in various failure situations. Authoritative standards for battery safety and reliability. Mainly for cells.
The main test items of UL1642 include room temperature short circuit test, 55 degree short circuit test, overcharge test, squeeze test, heavy object impact test, mechanical impact test, vibration test, hot box test, temperature impact test, high altitude simulation test, ejection test, etc. .
UL2054 is mainly aimed at lithium battery packs or battery packs. Suitable for primary (non-rechargeable) and secondary (rechargeable) batteries used as power sources in products. These batteries can consist of a single electrochemical cell or two or more lithium-ion batteries that convert chemical energy into electrical energy through chemical reactions in parallel or in series.
The test items of UL2054 mainly include electrical test (short-circuit test, overcharge test, abuse overcharge test, overdischarge test, power-limited source test), mechanical test (squeeze test, impact test, acceleration test, vibration test) battery pack casing Test, drop impact test, 250N static test, mold pressure release test, fire test, ejection test, environmental test, high temperature test, temperature cycle test, etc.
UL is mainly divided into 3 types of listing marks: UL listing marks, C-UL listing marks, C-ULUS listing marks, which are mainly distinguished according to their target for different countries and markets.
For example, the UL listing mark is currently the most commonly used. This type of mark is commonly seen in the following categories: appliances, calculator equipment, stoves and heaters, fuses, power boards, smoke and carbon monoxide detectors, fire extinguishers and automatic Sprinkler systems, personal floating devices such as life jackets and buoys, bulletproof glass and thousands of other products.
C-UL listing mark, suitable for products sold in the Canadian market. This marking can be seen on the following types of equipment: electrical and calculator equipment, vending machines, home anti-theft alarm systems, lighting fixtures, and many other kinds of products.
C-ULUS listing mark meets both the requirements of the United States and Canada.
UL’s certificate report has no validity period and is maintained in accordance with the factory inspection and certificate maintenance fees. The factory inspection is conducted once a quarter and a factory audit record is required.