Domestic Mail: Primary and secondary lithium cells and batteries installed in or packed with equipment are mailable via air or surface transportation. Primary lithium cells and batteries not packed with or installed in equipment (individual batteries) are mailable via surface transportation only.
International Mail or to and from APO, FPO, and DPO locations: Primary and secondary lithium cells and batteries installed in the equipment they are intended to operate are mailable. Primary and secondary lithium cells and batteries not packed in equipment (i.e., batteries packed with equipment or individual batteries) are prohibited.
