After getting through the facility and avoiding the Sentinels protecting it, you must solve the Stray Atomic Battery problem to get the priceless treasure. Finishing this side mission is essential to moving the plot forward, unlike other optional side quests like collecting all music sheets in Stray or obtaining the Stray Badges.
Stray: How to Unlock The Atomic Battery
Once you’ve made your way through the factory undetected, you’ll come to an area with a door covered by lasers. Fortunately, there is a barrel nearby that you can enter and roll through the door into the next room. ..
There is a robot that you can interact with and it will either follow you or stand still. There are three pressure plates on the floor. To get the atomic battery, two of the plates need to be weighted down. If you look to the left, you will see another robot behind a safe wall, so use the first robot to jump onto the platform above the wall. Interact with the second robot and pull the lever to open the door and re-enter the room with the battery.
The robot should follow you as you move it to the left and right pressure plates. Make sure that they stay on the plates and stop when you tell them to. Finally, take the atomic battery out of the barrel and place it on the ground.
Final Words
How to Unlock the Atomic Battery: Clementine needs to devise a plan to obtain the Stray Atomic Battery because it is essential to her scheme to restore the Old Subway network and the Neco Corporation has secured it inside of their factory.