AAA Battery is a trinket.
Effect
- If an activated item would regain its penultimate charge upon clearing a room, it is instead fully charged.
Notes
- Does not affect items with only one bar of charge or those with automatic recharge.
- Recharging an item by taking damage with
Habit, the instant charge given by 9 Volt, or any source of charge other than clearing a room, will not activate the trinket's effect.
Interactions
- The Battery: No effect on the second level charge.
- Watch Battery: Watch Battery triggering after clearing a room will also trigger AAA Battery, provided the activated item is missing exactly 3 charges.
Synergies
- Schoolbag: The trinket activates based on the primary item slot, but it grants an extra point of charge to the second item as well.
In-game Footage
Unlockable Achievements
- 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).
Any 2 items that have the Gallery
Concept for AAA Battery.
 Batteries
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 The Binding of Isaac: Rebirth
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