Borderlands 4 SDU Tokens Guide – All Storage Deck Upgrade Locations and How to Get Them

In Borderlands 4, Storage Deck Upgrades (SDUs) are among the most valuable resources you can collect. These special tokens allow you to expand your backpack, increase ammo capacity, unlock more space in your bank, and improve your lost-loot system.

If you want to avoid constantly running out of ammo or juggling items in your backpack, farming SDU tokens in Borderlands 4 is essential. Luckily, there are multiple ways to earn them across Kairos, tied closely to exploration and progression.

Also Check: Borderlands 4 Meat is Murder Walkthrough – Complete BL4 Side Quest Guide

Also Check: Borderlands 4 Difficulty Guide: Which Mode Should You Play On?

Here’s a complete breakdown of every method to collect SDUs in BL4.

All Ways to Get SDU Tokens in Borderlands 4

There are 11 primary methods to earn SDUs in Borderlands 4, each tied to different activities across Kairos.

1. Safehouses and Order Silos

• Unlocking Safehouses and Order Silos grants 40 SDUs each.
• There are 14 Safehouses and 9 Silos, giving you a massive 920 tokens total.
• They also act as fast-travel points, making this one of the best methods.

2. Evocariums

• Found all over Kairos, often in plain sight.
• Activating one triggers a mini-quest to find and place a Golden Orb.
• Each completed Evocarium rewards 15 SDU tokens.
• With 18 total, you’ll earn 270 SDUs this way.

3. Vault Symbols

• Hidden Vault Symbols give you 5 SDUs each when interacted with.
• There are 46 scattered across Kairos, totaling 230 tokens.

4. Lost Capsules

• Found during exploration and delivered to Safehouses.
• Each capsule rewards 15 tokens.
• With 20 capsules total, you can get 300 tokens.

5. Meditation Shrines (Auger Shrines)

• Located mainly around Terminus Range.
• Interacting with each shrine gives 10 SDUs.
• There are 10 in total, granting 100 tokens.

6. Propaganda Speakers

• Disable them by hacking the network.
• Each hacked speaker gives 20 SDU tokens.
• With 27 across Kairos, you can earn a hefty 540 tokens.

7. Electi Safes

• Scattered across Carcadia Burn and Dominion.
• Cracking one grants 10 tokens.
• There are 10 total, offering 100 SDUs.

8. Order Bunker Bosses

• Each bunker is defended by a boss fight.
• Defeating one rewards 40 tokens.
• There are 6 bunkers total, worth 240 SDUs.

9. Auger Mine Bosses

• Found in the Abandoned Auger Mine.
• Clearing each boss rewards 40 tokens.
• With 7 bosses, that’s 280 SDUs in total.

10. Ripper Drill Sites

• Controlled by the Ripper faction.
• Destroying a drill site rewards 40 SDU tokens.
• There are 6 total, offering 240 SDUs.

11. Ancient Crawlers

• Giant abandoned vehicles scattered across Kairos.
• Scaling each one rewards 40 tokens.
• There are 10 crawlers total, meaning 400 SDUs.

Total SDU Tokens Available in BL4

By combining all the above activities, you can collect approximately:

3,620 SDU tokens in Borderlands 4

While many will come naturally through exploration, targeting Safehouses, Silos, and Propaganda Speakers early gives you a significant boost to ammo and storage space — making the rest of your journey on Kairos much smoother.

Storage Deck Upgrades in BL4 are a must for any Vault Hunter who doesn’t want to constantly run out of ammo or struggle with limited inventory. By focusing on these 11 methods to farm SDUs, you’ll steadily increase your carrying capacity and efficiency throughout the game.

Make SDU farming part of your exploration routine, and your Vault Hunter will thank you later.