The HUD features a segmented gauge representing the boost meter. This starts at 34% at the beginning of a match, and using the boost will deplete the meter.
The boost meter can be filled again by driving over active boost pads. There are two kinds of boost pads: 100% refills, which appear as floating orbs, and 12% refills. The former are normally located at the corners and edges of the arena, whereas the smaller ones are placed more inwardly.
Picking up a 100% boost will consume the node and bring the boost meter to 100% regardless of the prior level of boost. Nodes will not be consumed if the boost meter is already at 100%. The small 12% nodes refresh on a ~5 second cool-down, and the 100% orb nodes refresh on a ~10 second cool-down.
The Mutator Settings will allow the player to change the amount of "power" the boost has and make boost auto-rechargeable. The cool-down for recharging boost with that mutator on is ~3 seconds after deactivating boost.