Binding of Isaac: Rebirth Wiki

Added in Repentance

120 Volt is a passive item added in The Binding of Isaac: Repentance.


  • Repeatedly zaps enemies that are in close proximity to Isaac with electricity beams for light damage.
    • Enemies can be zapped up to six times per second, with each zap dealing 0.75x Isaac's damage.
    • Each zap can hit up to 4 enemies, if they are sufficiently close to each other.
    • If the floor is wet, such as in Downpour Downpour, Flooded Caves Flooded Caves, some rooms in Dross Dross and Scarred Womb Scarred Womb, as well as under the effect of Flush! Flush!, the initial distance is unchanged, but enemy-to-enemy arcs reach further.
    • Trigger range appears to be approximately two tiles wide - It's possible to zap an enemy standing directly on the other side of a rock. This range seems to be equal to to the poison range of Dead Tooth Dead Tooth.


  • This item has a brief targeting delay, such that enemies can close in and touch Isaac before they start getting zapped.
  • Friendly monsters (from Poke Go Poke Go, for example) are targeted by 120 Volt as well, and while they don't receive damage from it, zaps can be chained through them.


  • Book of the Dead Book of the Dead / Delirious Delirious / Friend Finder Friend Finder / Friendly Ball Friendly Ball / My Shadow My Shadow / Mystery Egg Mystery Egg / Poke Go Poke Go / Polished Bone Polished Bone: All friendly enemies spawned by these items can be continuously zapped safely. The friendly enemy takes no damage, while regular enemies do to the chain lightning.
  • Camo Undies Camo Undies: Enemies won't target Isaac, thus he can safely zap enemies while standing near them. However, this won't work with bosses.
  • Dark Arts Dark Arts: Enemies and bosses will be zapped while Dark Arts' effect is active, allowing to safely deal damage.
  • Gnawed Leaf Gnawed Leaf / VII - The Chariot? VII - The Chariot?: Zaps enemies while Isaac is invincible, allowing most rooms to be cleared without moving.
  • Pause Pause: Zaps will not stop the pause effect allowing Isaac to kill or chip bosses easily by standing near them for the duration of the pause effect.


  • Mine Crafter Mine Crafter: The TNT is spawned and then instantly detonated by 120 Volt's electric shock, inflicting 1 full heart of damage.

In-game footage[]


  • This item originated in the Antibirth mod. It originally had an effect similar to Jacob's Ladder Jacob's Ladder and a different costume.
  • 120 volt is the voltage of standard household circuit in the US.
    • In the Chinese version of the Binding of Isaac: Repentance, it's changed to “220伏 (220 Volt)”, referencing the standard household circuit voltage in mainland China.