AAA Battery is a trinket.
Effect[ | ]
- If an activated item would regain its second to last charge upon clearing a room, it is instead fully charged. This effectively reduces its charge time by one bar.
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.
Synergies[ | ]
- 9 Volt: If active item requires three or more charges, trinket gives an extra charge, effectively utilizing itself with 9 Volt.
- Golden Trinket / Mom's Box: Items require one charge unit fewer to get fully charged.
- Jacob's Ladder / 120 Volt: Increases the amount of arcs a spark can generate.
- Schoolbag: The trinket activates based on the primary item slot, but it grants an extra point of charge to the second item as well.
Interactions[ | ]
- 4.5 Volt: AAA Battery has no effect after picking up 4.5 Volt
- 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 was missing exactly 3 charges prior to clearing the room.
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).
Gallery[ | ]
Concept for AAA Battery.
 Batteries
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| Items |
| Trinkets |
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 The Binding of Isaac: Rebirth
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