AAA Battery

AAA Battery is a trinket.

Effects

• Automatically recharges the last energy slot of an activated item, effectively reducing recharge rates by one.

Notes

• Does not affect items with only one bar of charge or those with automatic recharge.
• Effect stacks with the 9 VoltReduces the charge of any Activated Items by 1. Any 1 charge items instead have timed recharges..
• Does not work with the second level of charge granted by The BatteryActivated collectibles can be "overcharged" to allow for an additional use..
• This trinket will only take effect when the item gains its penultimate charge upon completing a room. Recharging an item by taking damage with HabitWhen Isaac is hit, 1 point of an item's charge is filled. will not activate the trinket's effect.
• It takes effect after Watch BatteryIncreased chance of batteries spawning. Has a chance to add an extra charge to Isaac's activated item upon completing a room. if Watch Battery triggers and gives the item its penultimate charge.
  • The same applies to the bonus charge from completing a quadruple room or L-shaped room.

Synergies

• SchoolbagAllows Isaac to hold two active items.: The trinket activates based on the primary item slot, but it grants an extra point of charge to the second item as well.

Unlockable Achievements

• 

  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.

Gallery

• 

  Concept for AAA Battery.

Batteries

Items:

• 9 VoltReduces the charge of any Activated Items by 1. Any 1 charge items instead have timed recharges.
• The BatteryActivated collectibles can be "overcharged" to allow for an additional use.
• Car BatteryCauses Isaac's activated item to activate twice on each use.
• Charged BabyA familiar that may drop a Little Battery. Has a small chance to freeze all enemies in the room.

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.