The Defibrillator implant is an important piece of equipment in RAGE. It brings the protagonist back to life when he has taken too much damage and is close to death. It can also shock any nearby enemies leaving him to wake up in a safe environment. 
The player can also receive another upgrade from the quest "Finding Feltrite" which speeds up the recharge time of the Defibrillator.
- ↑ The introduction to the defibrillator minigame (console version) specifies that the electrical discharge is meant to neutralize nearby enemies so that the Nanotrite host can recover safely.