Contains both requirements and general guidelines regarding the design@ testing@ application@ handling@ storage@ and disposal of lithium cells and batteries. It provides designers@ manufacturers@ and users of equipment installed in aircraft with information on the performance characteristics and operating and environmental limitations of lithium cells and batteries powering such equipment. Two categories of maximum cell and battery sizes are identified. Category I: Solid-cathode cells that contain less than 0.15 grams of lithium or lithium alloy@ and batteries that use not more than four such cells. Category II: Liquid-cathode cells that contain less than 0.15 grams of lithium or lithium alloy@ or batteries comprised of these cells. Cells that contain 0.15 to not more than 5 grams of lithium or lithium alloy. Batteries that contain not more than 25 grams lithium or lithium alloy. Cells containing more than 5 grams of lithium or lithium alloy@ or batteries that contain more than 25 grams of lithium or lithium alloy are beyond the scope of this document. FAA Technical Standard Order (TSO) ?C C97 references this document.