Car Battery

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Font TeamMeat C.pngFont TeamMeat a.pngFont TeamMeat r.png   Font TeamMeat B.pngFont TeamMeat a.pngFont TeamMeat t.pngFont TeamMeat t.pngFont TeamMeat e.pngFont TeamMeat r.pngFont TeamMeat y.png
Item icon
Item altar
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Character appearance
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Shop Shop
Greed mode only Shop Shop
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(page 3, column 11, row 6)
Added in Afterbirth

Car Battery is a passive item added in The Binding of Isaac: Afterbirth.

Effect[edit | edit source]

Synergies[edit | edit source]

  • Blank Card Blank Card: Doubles the effect of any cards used.
    • Blank Card + Added in Afterbirth †Tarot Cloth Tarot Cloth: Quadruples their effects instead.
  • Added in Afterbirth †Broken Shovel Broken Shovel: Prevents the Mom's Foot from appearing for two rooms (empty or not), or for two waves of a Challenge Room or the Boss Rush.
    • Combined with items like 9 Volt 9 Volt or The Battery The Battery, this synergy allows Isaac to (considering he entered the Boss Rush room with a full charge) essentially remove the feet for the entire duration of the Boss Rush.
  • Added in Afterbirth †Crooked Penny Crooked Penny: Splits the 50% chance to succeed into a 25% chance to quadruple all items and a 25% chance to duplicate all items while consuming the originals; the latter will make Devil deal and Shop items free.
  • Added in Afterbirth †Void Void: Doubles effects of all absorbed activated items. Absorbing passives will not give extra stat ups.

Interactions[edit | edit source]

  • Book of Secrets Book of Secrets: Activates twice, but has a chance to uselessly activate the same effect twice.
  • The D6 The D6/D8 D8/D12 D12/D20 D20: Re-rolls twice instantly without any benefits. The D6 depletes item pools at double the speed.
  • D4 D4/D100 D100: Instantly re-rolls Isaac's items twice, which doubles the speed at which the item pools are exhausted and transformations are achieved.
  • Dead Sea Scrolls Dead Sea Scrolls: Activates 2 random effects.
  • Added in Afterbirth †Dull Razor Dull Razor: The invulnerability time is not increased, but damage-triggered items will activate twice if applicable.
  • Mine Crafter Mine Crafter: Spawns a Movable TNT and instantly detonates it, damaging Isaac.
    • Added in Afterbirth † This has been changed to spawn two Movable TNT barrels instead, which you can detonate at will.
  • Added in Afterbirth †Moving Box Moving Box: Activation swaps the contents of the box with the contents of the room.
  • Ventricle Razor Ventricle Razor: Places both trapdoors in same location.
    • Added in Afterbirth † Ventricle Razor works normally.

No Effect[edit | edit source]

Additionally, any item that removes hearts or consumables, such as Razor Blade Razor Blade, Portable Slot Portable Slot, or Guppy's Paw Guppy's Paw, will not have its effect doubled.

In-game Footage[edit | edit source]

Unlockable Achievements[edit | edit source]

Seeds[edit | edit source]

 PC  A188 W1Q8 (First floor Shop)

 Switch  Q1ZZ ETS0 (Starting item as Eden)

Bugs[edit | edit source]

Bug Bug! Added in Afterbirth †Mr. ME! Mr. ME!: Grabbed items and pickups may become ghostly and impossible to pick up. Leaving the room and returning fixes this.

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