Energy shielding is a form of physical shielding consisting of a field of energized particles which will seal around any form of surface, which will deflect physical objects. Shields protect you for a brief amount of time from damage. A player's shields can be further augmented with an overshield. In Grifball, an overshield can be gained when a player picks up the bomb to become the Grif.
Each game has a specific time delay before energy shields begin recharging, and a certain amount of time it takes for a full recharge after the delay has passed, shown in the following table:
|Halo 3||4.25 s||1.75 s|
|Halo: Reach Spartans||6 s||2.75 s|
|Halo: Reach Elites||4.5 s||3.5 s|
|Halo 4||6 s||2 s|