Not to be confused with the passive item, The Battery.

IsaacHDIsaac Rebirth

9 Volt is an item in The Binding of Isaac and the Rebirth remake.


Isaac gets a battery embedded into his skull.

Leaves Isaac with two bars already charged after using his Activated Item. Also fully recharges Isaac's current activated item upon pick-up.

In Rebirth, if item requires single charge, changes it to cooldown. Cooldown time depends on item. Item starts to recharge after use only if there are enemies in room (to prevent abuse).


  • Reduces cooldown time for The Candle to 1.2 seconds.


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