Deuterium cartridge

Deuterium cartridges are components of a starship's warp drive system, presumably relating to the deuterium fuel source.

In 2370, Lieutenant Commander Geordi La Forge asked Ensign Tyler to help Farrell inspect the deuterium cartridges shortly before a new warp core was to be activated aboard the USS Enterprise (NCC-1701-D). 

Cartuchos de Deuterio Cartouche de deutérium