Portable gravity lift

Were you looking for the more permanent Grav Lift?

The Portable Gravity Lift is a piece of Covenant deployable field equipment. It is a new feature for Halo 3.

Operation
Once deployed, the Portable Gravity Lift unfolds and projects a bluish-purple gravity beam that propels the player into the air - exactly the same as the Covenant's larger version, the unmodified Gravity Lift, but on a smaller scale. When placed near a wall, a player can use this device to jump over it. Doorways can also be blocked with it, by sticking enemy players on the ceiling, or if in Forge place it horizontally so it pushes the player away. It has the power to lift vehicles, such as the Mongoose, and other objects besides players into the air. Frag grenades tossed at the lift will fly off in directions which can be manipulated by the player to damage enemies.

Also, players of the Halo 3 Beta used tactics like deploying the gravity lift and launching the Power Drainer up to the enemy.

It is activated by the X-Button now dubbed the "Equipment Button." by G-Dog

Forge
When in Forge you can place an active grav lift that doesn't require pickup for activation. So in-game it will already be active. With this in mind you can make some cool maps. You can also set the run time minimum (as the monitor, press X when facing the grav lift and then press X again)for the grav lift at the same as the run time maximum, this will make it spawn instantly after being destroyed. And thus having a practically indestructable grav lift at your disposal

In Forge you can place a grav lift on top of a weapon holder. If done correctly the gravitational force from the holder will turn the grav lift sideways. So instead of lifting you up vertical it will push you horizontal. This can be used (in combination with the trick described above) to keep people from entering doorways or certain areas.

Disadvantages
Usage of the Gravity Lift inside (with a roof above) can trap the player, as they cannot move out while pressed against the ceiling. However, this can also be used as a defense. Also, portable or not, the Gravity Lift can still be destroyed by conventional weaponry and will self-destruct after ±30 seconds. Also, an active Grav Lift, like an active Deployable Cover, will not survive a fall from a great height.

Appearances
The Portable Grav Lift was seen in the H3 ViDoc while a group of players were attacking High Ground. To the untrained eye one would suppose that a player just grenade jumped, but there was a pad on the floor that was radiating a blue light similar to the Man Cannon. It is another piece of equipment similar to the Bubble Shield, Power Drainer, Trip Mine, and Radar Jammer.

The Portable Gravity Lift was confirmed on Bungie.net.