请注意:此版本的所有临时修订版将在您购买时提供。锂电池SUL 16421范围1。1这些要求包括用作产品电源的一次（不充电）和二次（充电）锂电池。这些电池包含金属锂、锂合金或锂离子，可以由单个电化学电池或两个或多个串联、并联或两者都连接的电池组成，通过不可逆或可逆的化学反应将化学能转换为电能。1.2这些要求包括拟用于技术人员的锂电池- 可替换或用户可替换的应用程序。1.3这些要求旨在降低产品中使用锂电池时发生火灾或爆炸的风险。这些电池的最终可接受性取决于它们在符合适用于此类产品的要求的完整产品中的使用。1.4这些要求还旨在降低当从产品中取出并丢弃用户可更换的锂电池时，因火灾或爆炸导致人员受伤的风险。1.5这些要求包括技术人员更换的锂电池，其中包含5个。 0克（0.18盎司）或以下的金属锂。锂含量超过5.0克（0.18盎司）的电池应根据是否符合本标准中的要求（只要适用）以及进一步的检查和测试来判断，以确定电池是否可用于其预期用途。1.6这些要求适用于用户可更换的锂电池，每个电化学电池中含有4.0克（0.13盎司）或以下的金属锂，金属锂含量不超过1.0克（0.04盎司）。容量超过4.0克（0.13盎司）的电池或容量超过1盎司的电池。 0克（0.04盎司）锂可能需要进一步检查和测试，以确定电池或电池是否可用于其预期用途。1.7这些要求不包括因摄入锂电池或其内含物而可能产生的毒性风险，也不包括因打开电池以接触金属锂而可能发生的人身伤害风险。

Please note: All interim revisions for this edition available at time of your purchase will be included.Lithium BatteriesUL 16421 Scope1.1 These requirements cover primary (nonrechargeable) and secondary (rechargeable) lithium batteries for use as power sources in products. These batteries contain metallic lithium, or a lithium alloy, or a lithium 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 reversible chemical reaction.1.2 These requirements cover lithium batteries intended for use in technician-replaceable or user-replaceable applications.1.3 These requirements are intended to reduce the risk of fire or explosion when lithium batteries are used in a product. The final acceptability of these batteries is dependent on their use in a complete product 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 explosion when 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 oz) or less of metallic lithium. A battery containing more than 5.0 g (0.18 oz) of lithium is judged on the basis of compliance with the requirements in this standard, insofar as they are applicable, and further examination and test to determine 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 oz) or less of metallic lithium with not more than 1.0 g (0.04 oz) of metallic lithium in each electrochemical cell. A battery containing more than 4.0 g (0.13 oz) or a cell containing more than 1.0 g (0.04 oz) lithium may require further examination and test to determine whether the cells or batteries are acceptable for their intended uses.1.7 These requirements do not cover the toxicity risk that may result from the ingestion of a lithium battery or its contents, nor the risk of injury to persons that may occur if a battery is cut open to provide access to the metallic lithium.