SN2PowerTweaks

SN2PowerTweaks

Three sliders for the things that actually run out of power in Subnautica 2. A lightweight UE4SS Lua mod that lets you tune battery capacity, charger speed, and base power generation independently — all configurable in-game via SN2ModSettings.

No `.pak` overrides, no save-file modification, no permanent changes — slide a value to `1` and the mod is effectively off for that category.

Please note: this mod only works on craftables such as batteries after you install the mod and create new items (batteries etc)

What it does

Battery Capacity Multiplier - 1> 10× - Multiplies `MaxEnergyLevel` on every battery and power cell. Covers Basic Battery, Acid (Advanced) Battery, Power Cell, and Fusion Power Cell V2. Preserves current charge ratio — a half-full battery stays half-full at the new cap.

Charger Speed Multiplier - 1>10× - Multiplies `ChargeRate` on every Battery Terminal and Power Cell Terminal.

Power Generation Multiplier - 1> 10× Multiplies `BasePowerGeneration` on every power generator component — solar panels, thermal plants, bioreactors, and hydro turbines. Sunlight / temperature / fuel scaling still applies on top, so the multiplier is to your peak output.

Each multiplier has its own enable toggle. A debug-logging toggle is included for troubleshooting.

Requirements

1. UE4SS for Subnautica 2 — (https://www.nexusmods.com/subnautica2/mods/36) / (https://github.com/Subnautica2Modding/Subnautica2-UE4SS)

2. SN2ModSettings — (https://www.nexusmods.com/subnautica2/mods/20) — provides the in-game slider UI. The mod will load without it, but you'll have no way to change the defaults short of editing `enabled.txt`.

Installation

• []1. Make sure UE4SS is installed correctly: `dwmapi.dll` next to `Subnautica2-Win64-Shipping.exe`, and the `ue4ss/` folder beside it.[/]

• []2. Extract this archive so the `SN2PowerTweaks/` folder lands inside:[/]

  <game>\Subnautica2\Binaries\Win64\ue4ss\Mods\

  Final structure should look like:

  ue4ss\Mods\SN2PowerTweaks\

  ├── enabled.txt

  ├── README.md

  ├── LICENSE

  └── Scripts\

  ├── ConfigManager.lua

  └── main.lua

  • []3. Important: open `ue4ss\Mods\mods.txt` and add this line anywhere:[/]

    SN2PowerTweaks : 1

    This ensures the mod loads before SN2ModSettings, otherwise the SN2ModSettings UI won't see Power Tweaks until you restart the game a second time. (See Troubleshooting for the reasoning.)

    • []4. Launch the game. Open Settings → Mods — you should see "Power Tweaks" in the list with three sliders.[/]

    Configuration

    In-game (recommended): open Settings → Mods → Power Tweaks, move the sliders, changes apply within ~1 second to every existing battery / charger / generator in your save.

    Manual file edit: the live values live in `ue4ss\Mods\SN2ModSettings\saved\SN2PowerTweaks.lua` after you've touched the settings once. Edit while the game is closed if you prefer.

    Compatibility

    - Other power mods (Better Batteries, Faster Chargers, PowerBoost 10x, etc.): technically they all target the same underlying properties. If you stack them, the effects multiply — e.g. Better Batteries x1. 5 + Power Tweaks 2× = ~3× capacity. Stable, but easy to over-tune. Pick one approach.

    - Save files: no save-file modifications. Uninstall the mod at any time and your save reverts cleanly — values snap back to vanilla on next load.

    - Multiplayer / co-op: untested. Should be safe for the host, but joining players will likely see desync if they don't have the same multipliers.

    Troubleshooting

    • []"Power Tweaks doesn't show up in Settings → Mods"[/]

    SN2ModSettings only scans its `registrations/` folder once at startup. If SN2PowerTweaks loads after that scan, its registration file is written too late and the UI won't see it.

    Fix: make sure `SN2PowerTweaks : 1` is in `ue4ss\Mods\mods.txt`. Mods listed in `mods.txt` load before auto-discovered ones, so the registration file is on disk before SN2ModSettings scans.

    Alternative quick fix: just restart the game once. The registration file persists between runs, so on the second launch SN2ModSettings will see it during its startup scan regardless of load order.

    [*]Values d