Zero Point Module (GregTech 5)/en

The Zero Point Module, or ZPM, is a tier 7 (ZPM-Tier) single-use battery capable of providing 2 trillion EU. It cannot be crafted; it can only be found, very rarely, in dungeon chests located within Jungle Temples. It is useless once it has been depleted, but it takes almost 212 hours to deplete it at its maximum discharge rate. The ZPM is a significant enough item that it has its own voltage tier named after it.