A phaser power cell is the component, often removable or transportable, of a handheld and shipboard phaser system.

The type 2 phaser has a small, removable power cell which generates enough power to activate a transporter. Hand phasers and disruptors alike are, however, unable to work with cracked or empty power cells.

Large power cells are used to supply power to phaser arrays on starships. The crew of the USS Defiant made a ritual of displaying depleted power cells during the Dominion War.

The crew of USS Voyager used power cells to stockpile deuterium for their energy reserve. Additionally, they used a power cell to get emergency power online, which was accomplished by hooking it into to the ship's EPS manifold. They can also be used to supplement the ship's power grid.

 

 

Handheld Phaser Power Cell Shipboard Phaser Power Cell