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Borderlands 4: All Charged Up Walkthrough

Complete guide to finishing the All Charged Up side mission in Borderlands 4 with detailed objectives, strategies, and rewards.

Table of Contents

How to Unlock All Charged Up in Borderlands 4

All Charged Up is part of a questline that starts with Null and Void. Complete Null and Void first before unlocking All Charged Up.

Complete Null and Void

You'll need to finish the previous mission "Null and Void" to unlock this questline.

Null and Void Walkthrough →

Find Rhodes at Horizon's Mar

After completing Null and Void, you can start the side mission by talking to Rhodes at Horizon's Mar, northwest of Idolator's Noose.

Borderlands 4 Rhodes Location at Horizon's Mar

Borderlands 4 All Charged Up Walkthrough Guide

Mission Objectives

  1. Escort Implosion Drive
  2. Kill Sludgemaw
  3. Talk to Rhodes

1. Escort the Implosion Drive

Step 1: Push the Implosion Drive

Get up to the structure behind Rhodes and perform a melee attack to push the implosion drive onto the loader.

Borderlands 4 Push Implosion Drive onto loader

Step 2: Head to Watershed Gate

Head north to Watershed Gate to meet the Outbounders. Help them defeat the Order guards in the area.

Borderlands 4 Watershed Gate Location

Step 3: Defend During Hacking

Once it's clear, talk to Rhodes and he'll ask you to open the loading bay. Interact with the door panel to let ECHO-4 hack in. Defend yourself while your drone hacks the door!

Step 4: Open the Elevator

After opening the loading bay, escort the implosion drive inside the hydroplant while dealing with enemies along the way. Interact with the switch on the left to open the elevator.

Borderlands 4 Elevator Switch in hydroplant

Step 5: Escort to the Roof

Continue escorting the implosion drive to the roof until it enters a doorway along with Rhodes and Conway. Be careful, as you will encounter more enemies.

Step 6: Drain the Reservoir

Take the stairs to reach the hydroplant reservoir. Interact with the nearby valve to drain the water, then flip the switch across the other side to release the loader.

Borderlands 4 Reservoir Controls for draining water

Step 7: Defeat Attack Drones

Escort the implosion drive and flip the switch on the platform where the loader stops. You'll then be attacked by drones. Destroy them to proceed!

Borderlands 4 Lower Loader and fight drones

Step 8: Raise the Reactor

Enter reactor maintenance in the northwest. Go to the control room at the far end and interact with the computer to raise the reactor.

Borderlands 4 Control Room Reactor mechanics

Step 9: Find Reactor Components

Rush will then ask you to look for three reactor components. The first two are on opposite sides of the hall near crates, while the third one is in the room upstairs on the right.

Borderlands 4 Reactor Components locations

Step 10: Install Components

Install the components in the reactor at the center. Return to the control room and press the button to lower the reactor.

Borderlands 4 Install Reactor Components process

Step 11: Lower the Loader

Head back outside to the implosion drive and flip the switch again to lower the loader along with yourself.

Step 12: Unload the Drive

Escort the implosion drive until it parks on the platform in the northwest. Unload it once it's parked.

Borderlands 4 Unload Implosion Drive final step

2. Kill Sludgemaw Boss

Step 1: Activate the Reactor

Go to the control room in the upper left and activate the reactor. Defend the implosion drive and defeat all enemies!

Borderlands 4 Activate Reactor for Sludgemaw fight

Step 2: Eject the Implosion Drive

Once it's clear, press the button behind the implosion drive to eject it down below. Before jumping down, use the vending machines nearby to prepare for an upcoming boss fight.

Borderlands 4 Eject Implosion Drive preparation

Step 3: Boss Fight Strategy

When you're ready, jump down the hole and follow the implosion drive into a cave. This leads to a boss fight against Sludgemaw. Defeat the boss!

Pro Tip: Sludgemaw burrows and surprise attacks, so dodge as soon as it pops out from the ground.

Borderlands 4 Sludgemaw Boss Fight gameplay
Cheese Strategy:

You can stand on the crate behind the implosion drive to cheese the boss fight. Since Sludgemaw only moves on the ground, it can't reach you while you're on the crate, though it can still shoot projectiles at you.

Borderlands 4 Sludgemaw Crate cheese spot

3. Talk to Rhodes

Step 1: Inspect the Implosion Drive

After defeating Sludgemaw, inspect the implosion drive.

Step 2: Complete the Mission

Leave the lower-lower level and talk to Rhodes. This will complete the mission.

Borderlands 4 Talk to Rhodes to complete mission

Borderlands 4 All Charged Up Mission Rewards

Base Rewards

  • Experience Points (EXP)
  • Cash
  • Eridium

Equipment Reward

Shield (Blue to Purple Rarity)

Borderlands 4 Shield reward from All Charged Up mission

Cosmetic Reward

ECHO-4 Paintjob (Out of Bounds)

Borderlands 4 Out of Bounds Skin cosmetic reward

Completing All Charged Up will reward you with the Out of Bounds Skin, an ECHO-4 Paintjob that you can use in the Customization menu.

Related Borderlands 4 Guides

Null and Void Walkthrough

Complete guide to the previous mission in this questline.

Read Guide →

Borderlands 4 Side Missions

Complete list of all side missions in Borderlands 4.

Read Guide →

Best Weapons Guide

Find the most powerful weapons in Borderlands 4.

Read Guide →

Character Builds

Optimize your Vault Hunter with these powerful builds.

Read Guide →

Comments & Strategies

Share your tips and strategies for completing the All Charged Up mission!

◀ Previous Mission: Null and Void Next Mission: Bound for Launch ▶