This SpringerBrief summarizes a full-scale, reduced commodity fire testing comparison of cartoned Lithium ion batteries and FM Global standard commodities in a rack storage configuration, as reported by FM Global. Tests evaluate the flammability characteristics of the materials and the effectiveness of ceiling level only sprinkler protection. The testing methods, discussed in depth, are scaled down from standard commodity classification testing due to the inordinate costs of Li-ion batteries. Small format Li-ion battery commodities represent both commercially available battery formats and...