Batteries are often subject to UL certification before entering the US market. Although UL certification is voluntary, the United States Customs Service has a “ UL” Marked goods are released, and without this mark, complex detection procedures are required. In the event of a safety incident, the Consumer Product Safety Commission (CPSC) will also use UL standards as the basis for determination. As a result, many sellers in the United States, in order to avoid trouble, refuse to sell. UL” Marked goods. Batteries entering the United States as parts of electrical products require UL certification.

Lithium batteries (group), spare batteries (group), household and commercial batteries (group).

UL 1642 Lithium Cell Safety code Standard
Household and Commercial batteries (sets)