Hairpin

Trinket Icon
Pickup Quote	"Danger charge"
Entity ID	5.350.120
Unlock Method	Recharge using Lil' Batteries 20 times

Hairpin is an unlockable trinket added in The Binding of Isaac: Afterbirth † (Booster Pack #1).

Effects

• Fully recharges Isaac's active item upon entering a boss fight.
  • This effect only occurs the first time a Boss Room is entered; leaving and re-entering the Boss Room will not result in more recharges.

Notes

• The trinket's effect will trigger once for each and every Boss Room. Even if there are multiple Boss rooms on the same floor for whatever reason ( Curse of the Labyrinth, The Void)
• In Greed Mode, grants a full charge only for the two boss fights on the final level.
• The effect is identical to picking up a Lil' Battery, with caveats listed in interactions.
• Recharges twice on Corpse II: 1st time happens when entering the boss room, 2nd time happens when entering the Mother fight.
• Does not fully recharge between Dogma and The Beast.

Interactions

• The Battery: If the item doesn't have a full first charge level, it will be filled. If the first level is full, the second charge level will be filled.
  • The item will gain both its charges.
• Mega Blast: Mega Blast gains only 3 charge units.

Gallery

• 

  Hairpin's original appearance prior to Booster Pack #4.

• 

  Hairpin's appearance prior to Booster Pack #5.

Trivia

• Hairpin is based on this Steam Workshop trinket by zarat.us.
• Hairpin's original description was "Poke that power outlet! Bosses charge you".

The Binding of Isaac: Rebirth
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