The Battery

Item Icon
Pickup Quote	"Stores energy"
Entity ID	5.100.63
Character Appearance
Item Pool	Battery Bum Crane Game Shop Shop
Quality	2
Item Tags
Collection Grid	(page 1, column 10, row 6) (page 1, column 20, row 3)

This article is about the item. For the pickup, see Batteries. For other uses, see Battery (Disambiguation).

The Battery is a passive item.

Effects

• Activated items can store an extra level of charge, allowing them to be used twice in one room.
  • Extra charges appear in yellow over the normal charge meter.

Notes

• The Battery does not affect self-recharging activated items.
  • Self-recharging active items can charge the yellow meter, allowing Isaac to use them twice immediately.
• If the recharge time of Isaac's held item is less than 6 and he picks up a Lil' Battery, it'll overcharge the item for the remaining charges left in the Lil' Battery.

Synergies

• 48 Hour Energy pill: A fully discharged item will be doubly charged, along with spawning 1 or 2 Lil'Batteries.
• Friendly Ball: Walking over a captured enemy will double charge the ball, allowing the enemy to be released, and allowing to catch a new one in the same room, and the process repeats. This allows the Friendly Ball to be used much, much more often, and gathering many more friends. Note: trying to catch a new enemy while the old one is in the process of spawning will result in the ball phasing through, catching nothing, thus wasting charge.
• Notched Axe: Causes remaining charge from the previous floor to carry over to the next one.

Unlockable Achievements

• 

  Extension Cord - Have The Battery, 9 Volt, and Car Battery in Isaac's collection.

• 

  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).

Trivia

• This item is used in It's in the Cards (challenge #14).
• The screws that appear in Isaac's head may be a reference to Frankenstein's Monster.
• The effect of this item was completely changed from the original Binding of Isaac.

The Binding of Isaac: Rebirth
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