Maybe many death loop netizens still don’t know how to obtain the death cycle battery. Here is the "How to Obtain the Death Cycle Battery" recommended by the editor of Source Code.com. Interested children should take a look at it. I hope it will be helpful to you.
Sharing how to obtain batteries in "Death Loop"
1. You need to go to the armory at noon, they are all nearby.
2. There is one on the door.
3. There is a searchlight outside this gate that is powered by a battery.
4. Use the battery to open the revolving door to an area with many mines.
5. Open the door to the weapons depot upstairs and there will be a machine gun turret inside.
6. If you don't mind the trouble, you can go to other places to get the machine gun turret/or the plot, but it's a little far away.