Water Loop in Battery Factory
When setting up a basic Battery Factory it is natural to loop the excess water back to an earlier stage of the production line.
The second I loop the water back all the output gets set to 0.
I set up an aluminium Factory which also looped water back, but this worked fine.
Seems like a bug?
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Comments2
Hans L. Falck
Dec 7, 2025
Thank you for taking the time to consider this issue and to comment.
My apologies for not understanding: What is the difference between looping back the water in the battery factory (which does not work in your modeller), and looping it back in an aluminium factory (which works in you modeller)?
Is there a link to the discord you are referring to?
satisfactorymodeler
Nov 25, 2025
Not a bug, it is working as intended. Your setup is causing a deadlock which is what would happen if you built it in game. You either are not supplying enough water causing it to run out, or are supplying it too much causing it to backup and stop. I suggest putting a priority merger before the input with the loopback as top priority and the main source as bottom priority. On the output of the loopback put a priority splitter with top priority going to the loopback and bottom priority going to something like a sink. This will show you where you have or need extra. Also keep in mind that mergers try to merge evenly so if the loopback needs to provide greater than 50% of the input and you merge it will an unlimited input, it will only take 50% from the loopback and cause a deadlock, which is why you need the priority merger and you will also need to merge with priority in the game too otherwise it will cause a deadlock. There is a thread on the discord FAQ detailing lots of ways you can create a deadlock.