Quantum Helmet is the endgame head armor of Industrial Craft 2, the helmet piece of a four-part QuantumSuit completed by the Quantum Chestplate, Quantum Leggings and Quantum Boots. One shaped 3x3 recipe turns two Reinforced Glass, two Advanced Circuit, two Iridium, one Nano Helmet, one Lapotron Crystal and one Hazmat Helmet into a single Quantum Helmet — extremely powerful and, with two Iridium on the bill, extremely expensive. The Quantum Helmet cannot be enchanted, so every advantage comes from the built-in EU-powered effects.

Powered by its EU reserve, the Quantum Helmet refills the underwater breath bar for 1,000 EU, replenishes the food bar for 10,000 EU per hunger point while food cans sit in the inventory, cures poison for 10,000 EU per level, cures wither for 25,000 EU per level and lends the Nightvision Goggles night-vision ability for 25,000 EU. A 10 million EU reserve at Power Tier 4 keeps those effects running, and only an MFSU or an MFSU Chargepad can recharge the Quantum Helmet — the CESU, MFE and BatBox chargers sit below the required tier. Combat drains every QuantumSuit part by at least 900 EU per hit, and a Quantum Helmet refilling hunger on an empty food bar burns its 10 million EU faster than any other suit piece, so keep food at hand.