Lithium (Fabric/NeoForge)

An optimization mod for Minecraft which improves server performance significantly.
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Lithium mc1.21.1-0.15.2 for Fabric

File namelithium-fabric-0.15.2+mc1.21.1.jar
Uploader
2No2Name2No2Name
Uploaded
Feb 5, 2026
Downloads
865.7K
Size
778.5 KB
Mod Loaders
FabricQuilt
File ID
7581453
Type
R
Release
Supported game versions
  • 1.21.1
  • 1.21
DownloadInstall Via App

Curse Maven Snippet

Fabric

modImplementation "curse.maven:lithium-360438:7581453"

Quilt

modImplementation "curse.maven:lithium-360438:7581453"

Learn more about Curse Maven

What's new

Lithium 0.15.2 for Minecraft 1.21 and 1.21.1 backports an optimization and bug fixes.

Make sure to take a backup of your world before using the mod and please report any bugs and mod compatibility issues at the issue tracker. You can check the description of each optimization and how to disable it when encountering a problem.

Additions

  • Optimize non POI block searches (Thanks to jcw780)

Fixes

  • Fix incorrect hopper sleeping with double chests halves read by comparators

All Relations

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  • Required Dependency
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