Strength Boost

Power Boost, also dubbed as Power Up, is an item that appears in  and Kingdom Hearts II. It permanently raises the user's strength by one point. It can only be used from the stock menu.

Kingdom Hearts II Final Mix

 * Power Boost: Xemnas's Replica Data

Kingdom Hearts

 * Power Up: Yellow Trinity Mark at the Mystical House (in Final Mix, replaced with AP UP); mail 10 Postcards; complete the Hercules Cup in under three minutes; complete the Shadow Cavern course of Jungle Slider; green Trinity Mark at the Storage; chest at Guillotine Square; chest at the Clock Tower; give Owl a Rare Nut; chest at the Entrance Hall; two chests at the Gate to the Dark.

Kingdom Hearts II

 * Power Boost: Obtain 35 different material types; obtain all Energy Materials; chest at the Underworld Entrance.

Kingdom Hearts II Final Mix

 * Power Boost: Obtain 35 different material types; obtain all Energy Materials; chest at the Underworld Entrance; chest at the Mineshaft.

Kingdom Hearts Final Mix

 * Power Up: In Beginner Mode, Sora starts off with 8 Power Ups in stock.

Kingdom Hearts
Power Up can be synthesized once the fourth list is unlocked.
 * 5 Power Shard
 * 3 Power Gem
 * 1
 * 1 Mystery Goo
 * 2 Orichalcum

Kingdom Hearts Final Mix
Power Up can be synthesized once the fifth set is unlocked.
 * 5 Spirit Shard
 * 3 Spirit Gem
 * 5 Power Shard
 * 3 Power Gem
 * 1 Dark Matter

Kingdom Hearts II
The Guard Recipe can be found in a chest in The Spooky Cave. The Power Boost is a rank synthesis item, and is an upgrade to the Defense Boost recipe.


 * 1 Mythril Crystal
 * 3 Blazing Crystal
 * 3 Lightning Crystal
 * 3 Lucid Crystal
 * 1 Serenity Crystal