Extension Cord is an unlockable trinket in The Binding of Isaac, added in the Afterbirth+ DLC.

Causes bolts of electricity to arc between each of Isaac's familiars, damaging enemies caught between them.

The bolts do 6 damage per strike.

They flow through each familiar in reverse order of acquisition, and reach Isaac last.

A bolt arcs every 2 seconds with one familiar; 3 of them arc per second with 2 familiars; 7.5 per second arc with 3 or more familiars.

This page shows information as of the latest Repentance release.
To see latest up-to date information about this trinket for the new Repentance+ (Online Co-op) DLC, check this page instead.

Add The Battery, 9 Volt, and Car Battery to the Collection Page.

The following special synergies and interactions for Extension Cord have been documented.

* Note that not all possible synergies and interactions are listed here.

• Check out the trinket description on the external Isaac Wiki.