Plastic-cased Exide battery.The first plastic-cased battery to be approved by Underwriters Laboratories Underwriters Laboratories Inc. is a U.S. not-for-profit, privately owned and operated product safety testing and certification organization. Based in Northbrook, Illinois, UL develops standards and test procedures for products, materials, components, assemblies, tools and , Inc., for use in emergency lighting units is the Type 3-COE-7 battery, manufactured by Exide Industrial Div. Electric Storage Battery Co., Philadelphia, Pa. Polystyrene polystyrene (pŏl'ēstī`rēn), widely used plastic; it is a polymer of styrene. Polystyrene is a colorless, transparent thermoplastic that softens slightly above 100°C; (212°F;) and becomes a viscous liquid at around 185°C; , molded mold 1 n. 1. A hollow form or matrix for shaping a fluid or plastic substance. 2. A frame or model around or on which something is formed or shaped. 3. Something that is made in or shaped on a mold. to close tolerances, furnishes a tough transparent cover. Eight to 12 years of service life is anticipated for the battery. It requires addition of water only once or twice a year. [ILLUSTRATION OMITTED] |
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