Energizer

Siress Belloby's energizer (The Magnificent Warriors).

Energizers are electrical generators.

Commander Adama made plans to trade an older unmarked energizer on the planet Sectar in exchange for agro seed (The Magnificent Warriors).

During a Cylon attack, energizer #1 is knocked out on Galactica, complicating firefighting efforts as well as critical surgery needed by Commander Adama (Fire in Space).

Original Series definition: a title of nobility, typically ascribed to a civilian of the female gender (e.g. Siress Tinia, Siress Blassie)

Galactica 1980 definition:  a power source (see: energizer); Dillon voices his concern that the energizer feeding power to the invisibility field hiding their Vipers needs to be recharged before the ships are rendered visible (1980: "Galactica Discovers Earth, Part I")