Air Cell is an IndustrialCraft 2 Experimental item — a Universal Fluid Cell filled with atmospheric air. It is not a placeable block; it is a portable cell item that lives in your inventory and serves as a crafting ingredient.

You obtain an Air Cell by right-clicking an empty Universal Fluid Cell while looking at open air, which fills the cell with breathable gas. In some IC2 Experimental builds, a Compressor accepts empty cells and outputs Air Cells without manual scooping, which is the preferred industrial method on automated lines.

In IndustrialCraft 2 Experimental, Air Cells appear as a reagent in advanced IC2 chemical and food recipes that require pressurised or canned air. Historically the cell could also be used as an emergency breathing reserve underwater, restoring the player's air meter when consumed, though this behaviour varies by IC2 build. Air Cells stack, so a small batch covers most early-game recipes without filling your inventory.