Power pack
A power pack was a type of energy storage technology that could be used to  devices of various kinds.

In 2265, after their warp engines were burned out due to an encounter with the galactic barrier, the crew of the  adapted the power packs used at the lithium cracking station on Delta Vega to regenerate them. ()

Phaser power packs, used in some type 2 phasers and phaser rifles, were one of the most common types. In the 23rd century, members of a landing party when carrying type 2 phasers would also carry one or more "reserve" power packs. These packs were designed to be quickly "swapped out" to "reload" the phaser.

Another type was typically used as an emergency power source on-board starships for use when main power was off-line. They could be used, among other things, to "unlock" closed doors. ()

A third "power pack" was a component of the aqua-shuttle that was required for operation of the vessel's phasers. In 2269, the power pack was damaged when the aquashuttle carrying members of the  crew was attacked by a sur-snake during a mission on the planet . ()

Vedala carts were operated by power packs, which could be easily consumed when the vehicle used full power for a long duration. ()

When investigating a derelict Promellian battle cruiser, an  away team used a power pack to power the Bridge's functions. ()

Power packs were distributed among the defenders of AR-558 before a Jem'Hadar attack. ()
Energy technology