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Type IC Machines
Tool Grid Wrench (IndustrialCraft)
Stackable Yes (64)
Item ID 227:2
Added by Industrial Craft 2

The Multi-Functional Storage Unit, also known as an MFSU, is a Tier 3 energy storage device. It is able to store up to 10,000,000, or 10 million EU (making it capable of powering multiple teleportations, running a Mass Fabricator, or directly storing power from some Nuclear Reactors), and can accept a maximum packet size of 512 EU from each of the 5 input faces (bigger EU packages cause the MFSU to explode). It can however accept unlimited EU/t. (For example, you can have 10 MFSU's outputting in one MFSU, resulting in a total input of 5120 EU/t, but because there are 10 packets of 512 EU, the MFSU won't explode.)

A charged MFSU produces a high voltage current of 512 EU/t from its output face. To use power from a charged MFSU on machines with lower power requirements, you must provide power through transformers to reduce the rate of flow so as not to explode your machine by overpowering it. For example: To power a standard machine such as an induction furnace from a charged MFSU, you would connect from the MFSU to a MV Transformer, however, if you require to power a lower tier machine, such as an electric furnace, you must place a LV Transformer following the MV Transformer, or else it will result in an explosion.

Alternatively, Transformer Upgrades can be applied to low tier machines to allow them to use higher levels of power, eliminating the need to step down through a separate transformer first.

The MFSU will not explode when it reaches storage capacity.

Like all storage units, its output face is marked by a special texture, which usually faces the player when the block is placed. The direction of the output face can be changed by right-clicking with a Wrench onto any of the input faces of the block. Normally, this will point the output face towards the player, but holding Shift while right-clicking will point the output face in the opposite direction.

To dismantle a MFSU, right-click on the output face with a Wrench or Electric Wrench. (Right-click on any input face to make the MFSU face towards you).

Note: The MFSU can be dismantled with a wrench. It does not have to be in lossless mode. This has been tested multiple times.

Note that once dismantled, the MFS Unit will lose any power it had been storing, so be sure to move the stored energy into other storage devices before dismantling.

Like other storage units, The MFS Unit has 6 Redstone Behavior settings. and those are:

Redstone Behavior
Behavior What will happen
Emit if full. Emits a Redstone signal on all sides when full.
Emit if partially filled. Emits a Redstone signal on all sides when the stored EU is between 0 and 10 Million EU.
Emit if empty. Emits a redstone signal on all sides when the stored EU is 0.
Do not output energy. When a Redstone current is supplied, it will NOT output any EU.
Do not output energy unless full. When a Redstone signal is received, it will not output any EU until the charge level is at maximum.
Nothing (Default on placement) The MFS Unit will not react to any kind of Redstone current.

Placing Redstone in the bottom slot of the MFSU's interface will convert the Redstone into 500 EU.

When a MFSU is right-clicked with an Energy Sensor Kit, it will give you an Energy Sensor Location Card, which can be used in the Industrial Information Panel to get constant info about that specific MFSU.

Note: Using Gold Cable (MV level) or Copper Cable (LV level) directly from the MSFU output will not work, as those cable types can't handle HV output. Use Glass Fibre Cable or HV Cable instead.

Warning: If the MFSU is placed directly adjacent to a bare nuclear reactor or a nuclear reactor chamber connected to a reactor, the MFSU can explode from the energy output of a reactor. This goes as well for the HV Transformer.

You must first change the output voltage of the MFSU's current with a MV Transformer for Gold Cable, then a LV Transformer for Copper Cable.

To get this to work with basic machines, you have to step down the voltage by putting an MV Transformer and a LV Transformer out of its output face, in that order. Otherwise, without stepping down the voltage, it is necessary to place two transformer upgrades in each machine before m

Resource Flow

aking connections. Use Glass Fibre Cables or HV Cables where voltage is not stepped down.

There is a glitch when you completely fill up a MFSU and cut the power, any machines that should drain power still get powered but the MFSU doesn't lose power. This can be fixed by relogging.


Crafting GUI.png

Lapotron Crystal

Lapotron Crystal

Lapotron Crystal

Advanced Circuit

MFE Unit

Advanced Machine Block

Lapotron Crystal

Lapotron Crystal

Lapotron Crystal




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Raw Materials Needed to make MFSU
Grid Diamond
32 Grid Refined Iron Refined Iron
110 Grid Redstone Dust Redstone
Grid Lapis Lazuli (Dye)
Lapis Lazuli
2 Grid Glowstone Dust Glowstone Dust
39 Grid Copper Copper Ingot
1 Grid Gold Gold Ingot
3 Grid Bronze Bronze Ingot
3 Grid Tin Tin Ingot
16 Grid Coal Coal
86 Grid Rubber Rubber


Input Up to 512 EU/t
Output 512 EU/t
Storage 10,000,000 EU

Video TutorialEdit

TEKKIT Tutorials Energy Storage07:11

TEKKIT Tutorials Energy Storage

How to Tekkit - MFE, MFSU, and Solar Power11:22

How to Tekkit - MFE, MFSU, and Solar Power

Minecraft Tekkit Classic Tutorial DE HD - Batterien und Transformatoren05:38

Minecraft Tekkit Classic Tutorial DE HD - Batterien und Transformatoren

Minecraft Technic Part 16 MFSU and the Mass Fabricator!08:04

Minecraft Technic Part 16 MFSU and the Mass Fabricator!

Tekkit Tutorials - IC2 2 - EU Storage, Transfer, and Conversion16:15

Tekkit Tutorials - IC2 2 - EU Storage, Transfer, and Conversion

Minecraft Tekkit German HD - Grundlagen Tutorial30:26

Minecraft Tekkit German HD - Grundlagen Tutorial

German Video TutorialEdit

Tekkit Lite Tutorials 009 Deutsch HD - IC 2 Basics - EU Storage Blocks08:07

Tekkit Lite Tutorials 009 Deutsch HD - IC 2 Basics - EU Storage Blocks

Turkish Video TutorialEdit

Tekkit Lite Rehberleri - Enerji üretim, aktarım ve depolamaya giriş-137259924714:40

Tekkit Lite Rehberleri - Enerji üretim, aktarım ve depolamaya giriş-1372599247


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