UL Standards & Engagement Valve Regulated or Vented Batteries with Aqueous Electrolytes UL 1989

1.1 These requirements cover valve regulated or vented batteries with aqueous electrolytes that can be used in various applications including stationary applications such as instrument batteries, enclosed batteries, emergency lighting batteries, emergency power batteries and uninterruptible power supply batteries, portable applications such as portable power tool batteries, and mobile applications such as industrial truck batteries. 1.2 These requirements only address potential risks unique to the utilization of a battery supply in a product. Products employing a battery supply shall comply with the basic requirements contained in this Standard applicable to the type of product and its intended use. 1.3 These requirements are intended to address aqueous electrolyte valve regulated or vented batteries such as lead acid, nickel-metal hydride, nickel zinc, or nickel cadmium, etc., and do not cover risks that may be unique to certain chemistries, such as the fire and explosion risks of lithium batteries. Lithium batteries are outside the scope of this Standard. 1.4 A battery system composed of vented or valve regulated types with battery management controls and other battery system components, and other chemistries or battery types used in stationary and motive auxiliary power applications are covered by the Standard for Batteries for Use in Stationary and Motive Auxiliary Power Applications, UL 1973.