Lithium batteries shall meet the provisions of 2.9.4, except that 2.9.4.1, 2.9.4.5.7, 2.9.4.6.3 if applicable, 2.9.4.6.4 if applicable and 2.9.4.7 do not apply when batteries of a production run of not more than 100 cells or batteries, or pre-production prototypes of cells or batteries when these prototypes are transported for testing, are installed in machinery or engines. Where a lithium battery installed in an engine or machinery is damaged or defective, the battery shall be removed.