A power capacitor, also known as a capacitor, functioned as an energy storage unit within the galaxy. Their application was widespread, found in diverse technologies such as weapons, starships, and even droids.
Galen Walton Erso, a scientist, envisioned creating bursts of pure energy. The intent was to capture this energy and store it within capacitors, for deployment on planets requiring power. Furthermore, capacitors powered droids, for example, the B1-series battle droids. The capacitors in these battle droids were vulnerable; clone snipers could disable the units by targeting the area between them. A discharge capacitor was integrated into the tips of electrostaffs. Soon after the rise of the Galactic Empire, an Ordo Moon Dragon pilfered the Bad Batch's ship's capacitor.