Binding of Isaac: Rebirth Wiki
Disambig.png 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.png Removed in Repentance Full
Added in Repentance 6
Removed in Repentance If Isaac has The Battery The Battery with no overcharge, only the main charge bar is filled. If the main bar is full, the overcharge is filled. 32.72%
Added in Repentance Micro Battery 5.90.2 Micro Battery.png 2 65.45%
Added in Repentance Mega Battery 5.90.3 Mega Battery.png Full (x2) Overcharges Isaac's active item up to two full charges as if The Battery The Battery was held. If Isaac has multiple active items, it will charge all of them twice. 1.00%
Added in Repentance Golden Battery 5.90.4 Golden Battery.png 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 Tainted Forgotten Tainted Forgotten 0.83%


  • Added in Afterbirth / Removed in RepentanceMega Blast Mega Blast only gains 3 charges per battery.
  • Added in Afterbirth † Batteries charge only the current active item, if holding multiple.
    • Added in Repentance If Isaac has an active item in the consumable slot, batteries prefer to charge the active item slot first.
  • Added in Repentance Holy Mantle Holy Mantle and similar effects will block the damage from the Golden Battery, allowing for infinite usage of active items on that floor.
  • Added in Repentance Golden Batteries can re-appear in undiscovered rooms, including the Secret Room Secret Room.
    • It can also appear in the abandoned area where Added in RepentanceKnife Piece 2 Knife Piece 2 is located.
  • 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[]


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.