The Battery

5.100.63

Shop Shop

(page 1, column 20, row 3)(page 1, column 10, row 6)

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

The Battery is a passive item.

Effects

• Active 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.

Synergies

• 48 Hour Energy! Pill: A fully discharged item will be doubly charged, along with spawning 1 or 2 Lil' Battery pickups.

Unlockable achievements

• 

  Extension Cord - Have The Battery, 9 Volt, and Car Battery in your collection.

• 

  Jumper Cables - Pick up any 3 of the following items/trinkets in a single run: 9 Volt, The Battery, Car Battery, AAA Battery, Watch Battery.

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.

Active Item Modifiers

Items:

• The Battery
• Car Battery
• Sharp Plug
• Void

Trinkets:

• Broken RemoteTriggers the Teleport effect whenever an activated item is used.
• Butter!Using an active item will drop it onto a pedestal on the ground. Taking damage may result in dropping a passive item.
• Dim BulbProvides a boost to all stats when Isaac's active item is completely uncharged.
• Vibrant BulbProvides a boost to all stats when Isaac's active item is fully charged.

Cards:

• ? CardWhen used, copies the effect of Isaac's currently held activated collectible.

Batteries

Items:

• 9 Volt
• The Battery
• Car Battery
• Charged Baby

Trinkets:

• AAA BatteryAutomatically recharges the last energy slot of an activated item, effectively reducing recharge rates by one.
• Watch BatteryIncreased chance of batteries spawning. Has a chance to add an extra charge to Isaac's activated item upon completing a room.