UL 1642:2004 pdf download Lithium Batteries
1 Scope
1.1 These requirements cover primary (nonrecharaeable) and secondary (recharaeable) lithium batteriesfor use as power sources in products. These batteries contain metallic lithium, or a lithium alloy, or alithium ion, and may consist of a single electrochemical cell or two or more cells connected in series.parallel, or both, that convert chemical energy into electrical energy by an irreversible or reversiblechemical reaction.
1.2 These requirements cover lithium batteries intended for use in technician-replaceable oruser-replaceable applications.
1.3 These requirements are intended to reduce the risk of fire or explosion when lithium batteries areused in a product. The final acceptability of these batteries is dependent on their use in a completeproduct that complies with the requirements applicable to such product.
1.4 These requirements are also intended to reduce the risk of injury to persons due to fire or explosionwhen user-replaceable lithium batteries are removed from a product and discarded.
1.5 These requirements cover technician-replaceable lithium batteries that contain 5.0 g (0.18 ounce) orless of metallic lithium. A battery containing more than 5.0 g of lithium is judged on the basis of compliancewith the requirements in this standard, insofar as they are applicable, and further examination and test todetermine whether the battery is acceptable for its intended uses.
1.6 These requirements cover user-replaceable lithium batteries that contain 4.0 g (0.13 ounce) or less ofmetallic lithium with not more than 10 a (0.04 ounce) of metallic lithium in each electrochemica cell. Abattery containing more than 4.0 g or a cell containing more than 1.0 g lithium may require furtherexamination and test to determine whether the cells or batteries are acceptable for their intended uses.
1,7 These reauirements do not cover the toxicity risk that may result from the ingestion of a lithium batteryor its contents, nor the risk of injury to persons that may occur if a battery is cut open to provide accessto the metallic lithiumn.
1.8 A product that contains features, characteristics, components, materials, or systems new or differentfrom those covered by the requirements in this Standard, and that involve a risk of fire, electric shock, orinjury to persons shall be evaluated using the appropriate additional component and end-productrequirements as determined necessary to maintain the acceptable level of safety as originally anticipatedby the intent of this standard. A product whose features, characteristics, components, materials, orsystems conflict with specific requirements or provisions of this standard cannot be judaed to comply withthis standard,Where considered appropriate, revision of requirements shall be proposed and adopted inconformance with the methods emploved for development. revision. and implementation of this standard