Focus Battery Necklace, Common

is an Artifact item.

Trivia
Release 88 added various common artifacts as drops:
 * The Ghost Corpion now has a significant chance to drop a Common Focus Battery Artifact, and Ancient Essence, and a decent amount of Corpse Wax.
 * Common Focus Battery Necklace added to ghost loot tables, with increased chances given to higher tier ghosts. Also, T5 and above ghosts will drop increasingly additional amounts of Corpse Wax. Also, T5 and above ghosts now have a small chance to drop an ancient essence.