4.5 Volt

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4.5   Volt
Item icon
Item altar
"Beat the juice out of them!"
Table dividing line 1.png
Item ID
Table dividing line 2.png
Item Pool
Normal and hard modes only Shop Shop
Table dividing line 3.png
Collection Grid
(page 6, column 19, row 2)
Added in Repentance

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

Effects[edit | edit source]

  • Causes Isaac's active item to charge when Isaac deals damage to enemies, rather than when he clears rooms or picks up batteries.
    • Charges are gained at a rate of 60 damage dealt per charge.

Notes[edit | edit source]

  • Bethany will continue to benefit from 4.5 Volt's effect, while also retaining her ability to use soul hearts as charges.
    • This applies to Tainted Bethany and her ability to use red hearts as charges as well. 15►Lemegeton Lemegeton will not gain charges as long as your normal active item has empty charges. This applies to all characters with active items in the consumable slot.

Synergies[edit | edit source]

  • Door Stop Door Stop\15►Mercurius Mercurius: Provides infinite charges by clearing some enemies then leaving the room, and repeating.
  • 15►Schoolbag Schoolbag: The item in the second slot gets charged when the first one is full. Overcharges on the first item also jump to the second one.

Interactions[edit | edit source]

  • 15►Alabaster Box Alabaster Box: No effect. It still must be charged with Soul Hearts.

In-game footage[edit | edit source]

Trivia[edit | edit source]

  • The Game files names 4.5 Volt's icon as "assaultbattery"

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