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Borderlands 4
How to Get Defibrillator
☆ How Rush Saved Mercenary Day (Bounty Pack 1)
★ 12 active SHiFT Codes as of December 4, 2025
☆ Black Market Location
★ Elemental Weakness Chart
☆ Legendary Weapons
★ Builds: Vex | Amon | Rafa | Harlowe
Defibrillator is a Legendary Repkit from the Jakobs Manufacturer in Borderlands 4. Learn more about how to get Defibrillator, as well as its other information.
List of Contents
How to Get Defibrillator
Has a Chance to Drop from Core Observer in Blacklime Bunker
The Defibrillator has a chance to drop from the Core Observer. This boss is found deep inside the Blacklime Bunker - an Order Bunker located at The Howl in the Fadefields region. To unlock Order Bunkers, you'll first need to finish the main mission, One Fell Swoop.
Core Observer Drops and Location
Has a Chance to Drop from Legendary Loot Sources
Aside from farming Core Observer, the Defibrillator also has a small chance of dropping from regular legendary loot sources like red chests, golden key chests, and other bosses. You can speed up your legendary farming by using a boss farm or endgame build for your Vault Hunter.
Defibrillator Information
| Defibrillator | |
|---|---|
| Legendary Effect |
Cardiac Shock When Health goes below 20%, there is a 50% chance to replenish a Repkit Charge. |
| Type | Repkit |
| Manufacturer |
 Jakobs
|
| DLC? | No |
Borderlands 4 Related Guides
List of All Shields and Repkits
All Shields and Repkits by Type
| Legendary Shields and Repkits | ||
| Energy Shields | Armor Shields | Repkits |
All Legendary Shields and Repkits
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How to Get Defibrillator
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