Menu

mod

Just A BatteryMinecraft mod for 1.21.8

Well it's just a battery. Good for early and late game and easy upgradable without grinding recipes.

client and servernewest supported 1.21.8TechnologyEquipmentStorage
Latest version
218.0.0
Minecraft
1.18.1 to 1.21.8
Java
Java 21+
Loaders
NeoForge, Forge
Licence
LGPL-3.0-only
Downloads
5.9k
Updated
12 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Just A Battery servers

One click and Just A Battery is installed with the right loader, on hardware built for it.

  • 1.21.8
  • NeoForge
  • Forge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Just A Battery declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.8NeoForge, Forge21+declared17 Jul 2025
1.21.4NeoForge, Forge21+declared3 Dec 2024
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.21NeoForge, Forge21+declared13 Jun 2024
1.20.6NeoForge, Forge21+declared29 Apr 2024
1.20.4NeoForge, Forge17+declared7 Dec 2023
1.20.2NeoForge, Forge17+declared20 Sept 2023
1.20.1NeoForge, Forge17+declared12 Jun 2023
1.20NeoForge, Forge17+declared2 Jun 2023
1.19.4NeoForge, Forge17+declared14 Mar 2023
1.19.3Forge, NeoForge17+declared7 Dec 2022
1.19.2NeoForge, Forge17+declared5 Aug 2022
1.19NeoForge, Forge17+declared7 Jun 2022
1.18.2NeoForge, Forge17+declared28 Feb 2022
1.18.1NeoForge, Forge17+declared10 Dec 2021

Download

From Just A Battery’s own host. Nothing is re-hosted here.

All 26 releases
218.0.0release30 Sept 2025

JustABattery-218.0.0.jar · 87 KB · for 1.21.8

Download latest
5b120b55c04b…
Older versions24
  • 211.1.029 Apr 20251.21.181 KB432 downloads6b26f6484f27…Get
  • 214.0.029 Apr 20251.21.489 KB51 downloadsd3b2affdc1af…Get
  • 211.0.026 Apr 20251.21.179 KB39 downloadsb00f8a94c190…Get
  • 210.0.017 Jun 20241.21.1, 1.2179 KB261 downloadsadf2a9b7f4f6…Get
  • 47.2.117 May 20241.20.181 KB1.2k downloadsf9e704499be8…Get
  • 47.2.016 May 20241.20.157 KB98 downloadsedc03aef65fa…Get
  • 202.1.016 May 20241.20.277 KB101 downloadsca1647ef8e6f…Get
  • 204.1.016 May 20241.20.477 KB107 downloads9670a547a8ea…Get
  • 206.1.016 May 20241.20.679 KB116 downloads885deac8d95f…Get
  • 206.0.04 May 20241.20.679 KB115 downloadsae6a493a1f07…Get
  • 204.0.08 Feb 20241.20.477 KB120 downloads0d2ca91d7561…Get
  • 202.0.07 Dec 20231.20.277 KB94 downloads92e55910bdbc…Get
  • 47.1.023 Sept 20231.20.180 KB367 downloads99dbd339d24e…Get
  • 43.1.023 Sept 20231.19.270 KB236 downloads7c16f241f99a…Get
  • 47.0.030 Jun 20231.20.180 KB139 downloads5e108aa5421c…Get
  • 46.0.023 Jun 20231.2080 KB120 downloadsc7376d6ccd70…Get
  • 45.0.015 Mar 20231.19.480 KB153 downloads97f6cc3f68e7…Get
  • 44.0.03 Jan 20231.19.380 KB138 downloads6eb0776998a6…Get
  • 43.0.017 Aug 20221.19.270 KB187 downloads1a8ca50648c0…Get
  • 41.0.112 Jul 20221.1970 KB152 downloads3376e992951a…Get
  • 41.0.08 Jun 20221.1970 KB765 downloads6d396dccdbd3…Get
  • 40.2.030 May 20221.18.270 KB523 downloadsd59718fd4226…Get
  • 40.1.010 Mar 20221.18.20.2 MB120 downloadsa95f84a5e1a0…Get
  • 40.0.04 Mar 20221.18.20.2 MB93 downloadsccc1d67ec032…Get

Frequently asked

Does Just A Battery work on Minecraft 1.21.8?

Yes. 1.21.8 is the newest Minecraft version Just A Battery declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Just A Battery support?

Everything the author has declared, from 1.18.1 up to 1.21.8. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Just A Battery on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Just A Battery support?

NeoForge, Forge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Just A Battery?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Just A Battery under?

LGPL-3.0-only, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Just A Battery?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Just A Battery safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Armor HiderHide or adjust the transparency of armor, glint, and offhand items - with full multiplayer sync. No dependencies required.GeckoLibA 3D animation library for entities, blocks, items, armor, and more!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Details from Modrinth, where the author last updated it on 30 Sept 2025. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .