Hairpin

5.350.120

Recharge using batteries 20 timesHairpin

Hairpin is an unlockable trinket added in Booster Pack #1.

Effects

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

Notes

• It will fully charge any active item, even 12 room charge items like Mega Blast.
• If a floor has the Curse of the Labyrinth, the item will fully charge twice; once for each boss room.
• In Greed Mode, grants a full charge only for the two boss fights on the final level.

Trivia

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

Gallery

• 

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

Booster Packs
#1	HairpinFully recharges Isaac's active item upon entering a boss fight. Wooden CrossGrants a Holy Mantle shield upon entering a new floor, which protects against one hit of damage. Butter!Using an active item will drop it onto a pedestal on the ground. Taking damage may result in dropping a passive item. Huge GrowthMakes Isaac large for the current room, increasing his range and damage. Ancient RecallSpawns 3 random cards. Era WalkFor the current room, enemies are slowed, Isaac's speed is increased, and his shot speed is decreased.
#2	Filigree FeatherAngels drop items instead of key pieces when defeated.
#3	Door StopThe last door Isaac went through stays open, allowing him to leave the room even if enemies are in it.
#4	Extension CordBeams of yellow electricity flow between Isaac and his familiars, damaging any enemies between them.
#5	Rotten PennySpawns a blue fly every time a coin is picked up. Baby-BenderGrants Isaac's familiars homing shots. Finger BoneGrants a chance to gain a bone heart upon taking damage.