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Battery Pack item
Battery Pack is a passive item in The Binding of Isaac, added in the Repentance DLC.
Description
Spawns 2-4 random batteries.
Fully charges Isaac's active item.
Note
This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.
Item pools
Battery Pack can be found in the following item pools:
| Name | Weight |
|---|---|
| Shop |
1.0/1.0
|
| Battery Bum |
1.0/1.0
|
| Greed Shop |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| battery | Contributes towards unlocking  Jumper Cables. |
| offensive | Can appear for  Tainted Lost. |
Special synergies
The following special synergies and interactions for Battery Pack have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Abyss | Spawns an electrical cyan locust that has a chance to chain-zap enemies similar to the effects of  Jacob's Ladder. Zaps deal 0.1 damage. |
* Note that not all possible synergies and interactions are listed here.
Internal item description
Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.
Battery Pack
• Fully recharges the held active item on pickup
• Spawns 2-4 random battery pickups
• Abyss: x1 shocking locust .5x Isaac's damage
External links
- Check out the item description on the external Isaac Wiki.
Eye Drops 
Act of Contrition 
Member Card 
Mom's Bracelet 
The Scooper 
Ocular Rift