Lihzahrd Power Cell

Lihzahrd Power Cell is used at a Lihzahrd Altar located at the end of the Lihzahrd Dungeon to summon Golem boss. They are found within the Lihzahrd Chest. They also can drop off Lihzahrd but it is extremely rare. A better alternative is if you have multiple Temple Key from killing Plantera, generate a new world and gather new power cells from that world's Lihzahrd Temple.