Compressors may be powered by a direct Cable connection, a Single-Use Battery, or a RE Battery in the lower slot. Remember that to retrieve any machine, you must use a Wrench or an Electric Wrench. As of v1.337 a Pump (IC2) with an infinite water source under it and a Compressor placed directly next to it will pump and compress water into snowballs without the need for Water Cells. When using BuildCraft pipes or RedPower Pneumatic Tubes, the top is the input and the rest of the block is output.
Known Bugs: If you try to remove the machine with an uncharged Electric Wrench and it's trying to compress something, it might destroy everything inside.
As the compressor is a basic machine, it has an internal power storage and upgrades can be applied to it.
The Compressor can receive up to 32 EU/t, unless it is upgraded with a Transformer Upgrade. If you supply it with any more energy than low voltage (32 EU/t), the Compressor will explode! The Compressor consumes 625 EU per operation and requires a minimum of 2 EU/t to operate continuously.