After spending the better part of an evening looping around Cedarbrooks Apartments’ Underground Parking Garage, I finally cracked how Resident Evil Requiem wants you to grab both batteries and open that stubborn gate. The game doesn’t clearly signpost the vertical routes or the Sewage Facility puzzle, so it’s very easy to waste ammo and time wandering in circles – I definitely did.
This guide walks you through, step by step, how to:
If you follow this route, you should be through the gate and looting BSAA containers outside in 20-30 minutes, even with a couple of deaths.
You hit this puzzle in the Underground Parking Garage beneath Cedarbrooks Apartments. You’ll see a locked metal gate with a battery panel next to it that has two empty slots.
Before you run off, walk right up to the red-lit electrical box next to the gate and interact with it. This usually gives you File #51: “Battery Storage Locations” – a memo that basically says replacement batteries are kept in the Parking Garage and the Sewage Facility. It’s a nice bit of world-building, but more importantly it confirms there are exactly two batteries and roughly where they are.
From here, you’ll tackle the batteries in this order:
I highly recommend doing them in that order, because the Sewage fight is tougher and you’ll appreciate having cleared the easier half first.
Standing facing the locked gate and the battery panel, turn left. Just a few steps away, you’ll see a ladder leading up to a catwalk. Climb it.
Follow the catwalk around, then drop down into the flooded lower section of the garage. This is where I initially got turned around: the game quietly funnels you down here rather than leaving the battery right next to the gate like older Resident Evil puzzles.
Once you’re in the water, movement is slower and noisier, and several zombies are lying in wait beneath the surface.
This area can eat ammo fast if you panic. What finally worked for me was:
There’s also some optional loot on and around the rusted trucks down here (ammo and sometimes a weapon upgrade depending on your route). Grab it if you’re low, but don’t stray too far before securing the battery.
From where you dropped into the water, you want to reach the far back-left (northwest) corner of the flooded area.
Use this mental map:
More zombies will usually wake up as you approach this office. My rule of thumb here was: if a zombie is already close, commit to killing it; if it’s shambling from far away, you can slip into the office and let the door bottleneck them.
Inside the office, mop up the remaining infected. Then look on the wall near the electrical panel: you’ll see the first Garage Battery mounted there. Interact to pick it up.
Before you leave, look up to spot a ladder leading into the ceiling/vent area. Climb it. This overhead route is the game’s intended shortcut back to the main gate and saves you from slogging back through the water.
Crawl or walk through the overhead passage; you’ll drop back down near the ladder you climbed earlier and the locked garage gate.
Return to the battery panel next to the gate and interact with it to insert the battery into one of the two slots. You’ll hear the mechanism power up partway, but the gate stays shut – you still need the Sewage Facility battery.
This second battery is where I nearly burned through all my shotgun shells. There’s a small puzzle and a nasty fight, but if you know what’s coming, it’s manageable.
With one battery already slotted, stand facing the gate again. Turn around and head up the short flight of stairs behind you. On the left you’ll see a door clearly marked “Sewage”. Go through it.
Inside, follow the corridor until you reach a <strongfloor broken="" floor<="" hatch="" of="" or="" section="" strong="">. Drop down into the lower Sewage Facility area. This is a one-way drop for the moment, so make sure you’re reloaded before you commit.
You’ll come to a large pit-like room. On the left/west side of this chamber, there’s a small platform with a Valve Handwheel lying on a crate or the floor. Pick it up – this is the key to both the bridge and the fight ahead.
Directly opposite, on the other side of the pit, you’ll see a closed door with a bare valve stem. That’s where the Handwheel goes.
Attach the Valve Handwheel to the valve stem next to the far door and start turning it. The first turn will open the door and trigger a rush of enemies from inside.
This usually includes several standard zombies and at least one tougher infected. Here’s how I handle it:
Once the immediate rush is down, don’t forget: you’re not done with the valve itself.
This is where I got stuck for a while. Turning the Handwheel doesn’t just open the door – it also moves a concrete platform forming a bridge across the pit.
Common mistake (that I made): I turned the valve once, saw the door unlock, and ran through. The bridge only extended partway, leaving an annoying gap I kept falling into.
What you should do instead:
Once the bridge is fully formed, cross over to the far side and go up the stairs towards the office area.
As you move deeper into the Sewage Facility, you’ll enter an open area before the office where the second battery is stored. Here, a large infected “brute” spawns, often with a few Blisterheads and regular zombies backing it up.
What finally worked reliably for me:
Don’t be afraid to burn heavy ammo here. You’re very close to a progression checkpoint, and the loot outside the gate will help you restock.
Once everything is dead, head up the stairs into the east-side office overlooking the Sewage Facility. This is laid out similarly to the garage office – desks, filing cabinets, and an electrical panel on the wall.
On that wall, you’ll see the second Garage Battery. Grab it. While you’re here, loot any documents or ammo; sometimes there’s extra lore tying back into the BSAA and the facility’s maintenance routine.
Before you leave, unlock the nearby shortcut door. This opens back near the ladder route that leads up to the Underground Parking Garage, saving you from redoing the valve section.
With both batteries in your inventory, climb back up to the main Underground Parking Garage area and return to the locked gate.
Interact with the panel again and insert the second battery. This time, a cutscene plays: the mechanism fully powers up, the gate opens, and you’re automatically awarded the BSAA Container Key.
Step through the gate and you’ll now be outside in East Raccoon City, near the BSAA containers and close to the gas station where you can later grab a Gas Can for the warehouse generator. The containers themselves hold valuable loot and are tied to challenges/trophies, so don’t skip them.
I’ve had one odd run where the Valve Handwheel stopped responding mid-turn. What fixed it:
Likewise, if enemies get stuck in geometry and combat won’t “end,” try leaving the room and re-entering. The game tends to re-spawn or reset them.
After a few playthroughs, this whole battery sequence becomes a quick detour:
Once you’re comfortable, you can get from first seeing the gate to stepping outside with the BSAA Container Key in under ten minutes on a clean run.
This battery sequence in Resident Evil Requiem feels overwhelming the first time because the game quietly layers vertical traversal, a small valve puzzle, and some nasty enemy placements all at once. But once you know:
– it turns into a satisfying, classic Resident Evil resource hunt instead of a brick wall. If I could muscle through it after wasting half a box of shells in the flood, you can absolutely do it too.
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