UL is an American safety consulting and certification company.
UL is an American safety consulting and certification company headquartered in Northbrook, Illinois. It maintains offices in 46 countries. UL1642 is for cell and UL2054 is for battery packing.UL is one of several companies approved to perform safety testing by the US federal agency Occupational Safety and Health Administration (OSHA). OSHA maintains a list of approved testing laboratories, which are known as Nationally Recognized Testing Laboratories.