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Raise a Floppa - The Loop
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Car Battery is a passive item added in The Binding of Isaac: Afterbirth.
Contents
Effect[]
- Causes eligible activated items to activate twice on each use.
- Of the
171 activated items, 45% – 77 items – are not eligible.
- Of the
Synergies[]
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, essentially removing the stomping attacks for the entire duration of the Boss Rush
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.
The 25% chance to duplicate all items while consuming the originals now generates 2 pennies instead.
Sulfur: Will count as giving double Brimstone, giving extra damage and a x1.2 damage multiplier for the current room.
Void: Doubles effects of all absorbed activated items. Absorbing passives will not give extra stat ups.
Wooden Nickel: 25% chance to spawn nothing, 50% chance to spawn one coin, and 25% chance to spawn two coins.
Interactions[]
Berserk!: Will only increase rage duration if no enemies are killed in the first half, effectively only affecting bosses that can't spawn enemies.
Book of Virtues: Doubles the spawned wisps on activation.
Book of Secrets: Activates twice,
but has a chance to uselessly activate the same effect twice.
Book of Shadows/
The Gamekid/
My Little Unicorn/
Unicorn Stump: Doubles the length of invincibility, but no effect on damage where applicable.
Clicker: If the Car Battery is removed by the first activation, a second activation will not happen. Two activations in a row is mostly detrimental, removing two items and possibly cycling through a character that lowers health.
Spindown Dice: Lowers ID by 2, good for some items, bad for others.
Dark Arts: Doubles the duration, giving more time to walk through more enemies, if you end the effect before the end of the first second, the item will reactivate itself; allowing to target the same enemies twice.
D4/
D100: Instantly re-rolls Isaac's items twice, which doubles the speed at which the item pools are exhausted and transformations are achieved.
As items are returned back into the item pool when re-rolled, the item pools aren't exhausted at all. In addition, you need to actively be holding a transformation's respective items to retain them now, so using the double re-roll to gain multiple transformations is no longer possible.
The D6/
D8/
D12/
D20: Re-rolls twice instantly without any benefits.
The D6 depletes item pools at double the speed.
D7: Doubles the amount of enemies summoned, but does not give double rewards.
Dead Sea Scrolls: Activates 2 random effects.
D Infinity: Activates 2 dice. The second activation die cannot be predicted.
Activates 2 dice. The second activation die is determined by the seed and never changes.
Dull Razor: The invulnerability time is not increased, but damage-triggered items will activate twice if applicable.
Eternal D6: Re-rolls twice like The D6 (see above), but the 30% chance of the item disappearing is increased to 51%.
Everything Jar: Instead of doubling its effect, Everything Jar will spawn a poop alongside its normal drop.
Head of Krampus: Doubles the damage the brimstone beams deal (for a total of
880 damage/
380 damage per use). Doesn't double the brimstone beams' duration.
The Hourglass: Doubles the length of the effect.
Mega Mush: Makes the effect twice as long.
Mine Crafter: Spawns a Movable TNT and instantly detonates it, damaging Isaac.
This has been changed to spawn two Movable TNT barrels instead, which you can detonate at will.
Moving Box: Activation swaps the contents of the box with the contents of the room.
This has been changed to have have no effects.
Spider Butt: Deals 10 damage to enemies twice but does not increase slow effect.
Stitches: Swaps places with Isaac twice in quick succession, rendering Stitches useless for collecting pickups & items beyond pits, rocks etc.
- However, it can still be used to telefrag enemies.
The Bean/
Mega Bean/
Kidney Bean: Deals double damage, but charms/poisons/petrifies for the same amount of time.
Tear Detonator: Multiplies detonated tears, resulting in 6x more tears than normal.
Telekinesis doubles the duration of the effect, with 6 sec. of use and 6 sec. of charge time
The Scooper: Will summon 2 peepers in a bifurcated direction
Ventricle Razor: Places both trapdoors in same location.
Ventricle Razor works normally.
No Effect[]
? Card
Abyss
Alabaster Box
Bag of Crafting
Black Hole
Blood Rights
The Bible
Bob's Rotten Head
The Book of Belial
Book of the Dead
The Boomerang
The Candle
Converter
Dad's Key
Damocles
Death Certificate
Decap Attack
Diplopia
Doctor's Remote
Eden's Soul
Eraser
Esau Jr.
Flip
Flush!
Free Lemonade
Forget Me Now
Friendly Ball
Gello
Genesis
Glass Cannon
Glowing Hour Glass
Golden Razor
Guppy's Paw
Hold
How to Jump
Isaac's Tears
IV Bag
The Jar
Jar of Flies
Kamikaze!
Lemon Mishap
Magic Fingers
Mama Mega!
Mega Blast
Mom's Bra
Mom's Bracelet
Mom's Pad
Mr. ME!
Mystery Gift
Notched Axe
Pandora's Box
Pause
Plan C
The Poop
A Pony
Portable Slot
Potato Peeler
Razor Blade
R Key
Red Candle
Red Key
Remote Detonator
Sacrificial Altar
Sharp Key
Shoop Da Whoop!
Smelter
Spin to Win
Suplex!
Telekinesis
Telepathy for Dummies
Teleport!
Undefined
Urn of Souls
Vade Retro
We Need to Go Deeper!
White Pony
Notes[]
- Having more than one Car Battery has no effect.
Trivia[]
Prior to Repentance, Car Battery's description was "Double charge!"
In-game Footage[]
Unlockable Achievements[]
Jumper Cables - Pick up any 2 of the following items/trinkets in a single run:
9 Volt,
The Battery,
Car Battery,
AAA Battery, and
Watch Battery (
Any 2 items that have the 'battery' item tag).
Seeds[]
PC A188 W1Q8 (First floor Shop)
Switch Q1ZZ ETS0 (Starting item as Eden)
Bugs[]
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Bug! Tainted Lazarus: using Flip as Tainted Lazarus activates flip twice. Character remains same in room, and flipped items are unable to be picked up. Leaving the room and returning fixes this.
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Items |
Trinkets |
Cards |
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Items |
Trinkets |