Extension Cord

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Have The Battery, 9 Volt, and Car Battery in your collectionExtension Cord

Extension Cord is an unlockable trinket added in Booster Pack #4.

Effects

• Beams of yellow electricity flow between Isaac and his familiars, damaging any enemies between them.
  • The beams do 6 points of damage per strike.

Notes

• The Forgotten's Soul acts as a familiar with this item.
• Does not affect temporary familiars.

Trivia

• Extension Cord is based on this Steam Workshop mod by Strawrat and CupertinoEffect, which was originally a passive collectible.

Gallery

• 

  Extension Cord's appearance in the original Steam Workshop mod.

• 

  The Extension Cord connecting the player to the BBF's explosion.

Bugs

Bug! When using BBF, the beam will be connected to the place where it explodes until it respawns.

Bug! When Holy Water breaks, the sprite is temporarily stored just off the top-left of the screen, where the yellow beams will still connect to it.

Familiar Modifiers

Items:

• BFFS!
• King Baby

Trinkets:

• Baby-BenderGrants Isaac's familiars homing shots.
• Child LeashCauses familiars to stay closer to each other.
• Duct TapeStops Isaac's familiars from moving.
• Extension CordBeams of yellow electricity flow between Isaac and his familiars, damaging any enemies between them.

Booster Packs
#1	HairpinFully recharges Isaac's active item upon entering a boss fight. Wooden CrossGrants a Holy Mantle shield upon entering a new floor, which protects against one hit of damage. Butter!Using an active item will drop it onto a pedestal on the ground. Taking damage may result in dropping a passive item. Huge GrowthMakes Isaac large for the current room, increasing his range and damage. Ancient RecallSpawns 3 random cards. Era WalkFor the current room, enemies are slowed, Isaac's speed is increased, and his shot speed is decreased.
#2	Filigree FeatherAngels drop items instead of key pieces when defeated.
#3	Door StopThe last door Isaac went through stays open, allowing him to leave the room even if enemies are in it.
#4	Extension CordBeams of yellow electricity flow between Isaac and his familiars, damaging any enemies between them.
#5	Rotten PennySpawns a blue fly every time a coin is picked up. Baby-BenderGrants Isaac's familiars homing shots. Finger BoneGrants a chance to gain a bone heart upon taking damage.