The BatBox is the lowest tier of EU storage devices added by Industrial Craft 2, followed by the MFE and MFSU. It can store 40,000 EU, and is a common buffer between a generator and the machines to be powered.
The BatBox is only able to handle Low Voltage (packets under 32 EU/t) inputs and outputs 32 EU/t. Any and all machines can be powered by the BatBox without the use of transformers. RE-Batteries can also be recharged in a BatBox, but Energy Crystals or Lapotron Crystals can't.
The BatBox's GUI features two slots. The top slot can be used for recharging tools and batteries. Batteries can also be placed in the bottom slot of the GUI to charge the BatBox itself.
Like the MFE and MFSU, the BatBox has five input faces and one output face. The output face faces the player when the block is placed. The output face is marked by an orange dot and can be changed using a Wrench, an Electric Wrench, or a Prototype OmniWrench. All energy storage devices will reset the energy loss calculations for running cables long distances, which makes them useful inline if one needs to transport energy hundreds of blocks.
The BatBox, MFE, and MFSU can be configured to emit a redstone signal under certain conditions.
|Emit if full||When the storage device is at maximum charge, it will emit a redstone signal.|
|Emit if partially filled||When the storage device is filled some ways between empty and maximum, it will emit a redstone signal.|
|Emit if empty||When the storage device contains no charge, it will emit a redstone signal.|
|Do not output energy||If a redstone signal is supplied to the device on any of its faces, it will not output EU.|
|Do not output energy unless full||If a redstone signal is supplied to the device on any of its faces, it will not output EU until the storage device is at maximum charge.|