Binding of Isaac: Rebirth Wiki
This article is about the pickup. For the item, see The Battery. For other uses, see Battery (Disambiguation).

Batteries add charges to Isaac's active item when picked up.

Battery ID Image Charges Notes Unlock Method Probability
Lil' Battery 5.90.1 Lil' Battery (except in Repentance) Full
(in Repentance) 6
(except in Repentance) If Isaac has Collectible The Battery iconThe Battery with no overcharge, only the main charge bar is filled. If the main bar is full, the overcharge is filled. 32.72%
(in Repentance) Micro Battery 5.90.2 Micro Battery 2 65.45%
(in Repentance) Mega Battery 5.90.3 Mega Battery Full (x2) Overcharges Isaac's active item up to two full charges as if Collectible The Battery iconThe Battery was held. If Isaac has multiple active items, it will charge all of them twice. 1.00%
(in Repentance) Golden Battery 5.90.4 Golden Battery 6 Deals a full heart of damage when picked up. Another golden battery will spawn in a random room, but it is not shown on the map until discovered. Golden Battery Defeat Mega Satan as Character Tainted Forgotten iconTainted Forgotten 0.83%

Notes[ | ]

  • (in Afterbirth and Afterbirth †)Collectible Mega Blast iconMega Blast only gains 3 charges per battery.
  • (in Afterbirth † and Repentance) Batteries charge only the current active item, if holding multiple.
    • (in Repentance) If Isaac has an active item in the consumable slot, batteries prefer to charge the active item slot first.
  • (in Repentance) Collectible Holy Mantle iconHoly Mantle and similar effects will block the damage from the Golden Battery, allowing for infinite usage of active items on that floor.
  • (in Repentance) Golden Batteries can re-appear in undiscovered rooms, including the Secret RoomSecret Room.
    • It can re-appear in every previously visited rooms that are displayed on the map, even in the mirrored area where Collectible Knife Piece 1 iconKnife Piece 1 is located, in the abandoned area where Collectible Knife Piece 2 iconKnife Piece 2 is located, or in the Death Certificate path
    • It can't appear in any room that is not displayed on the map at anytime, like Crawl SpaceCrawl Space, Black MarketBlack Market, DownpourDownpour entrance, MinesMines entrance, I AM ERRORI AM ERROR room.
  • The probabilities in the table refer to the kind of battery that is generated by the game when a battery pickup is spawned with a sub-type of 0 (i.e. a random battery).

Unlockable Achievements[ | ]

Bugs[ | ]

Bug Bug! If a Golden Battery appears in the Abandoned Area before the Mother's Shadow chase, it will despawn for the floor, as the room configuration is changed when the chase begins.

Gallery[ | ]