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.

In Kingdom Hearts Final Mix: Beginner Mode, Sora starts off with 8 Power Ups in his stock.

Kingdom Hearts

 * Traverse Town - Mystical House, Yellow Trinity Mark.
 * You can receive another Power Up by mailing the 10th Postcard.
 * Olympus Coliseum - Complete the Hercules Cup in under three minutes.
 * Deep Jungle - Complete the Shadow Cavern course of Jungle Slider.
 * Agrabah - Storage Room, activate Green Trinity Mark.
 * Halloween Town - Guillotine Square, ledge near the Lab Entrance.
 * Neverland - Clock Tower, return when the 2:00 and 4:00 doors are lit.
 * 100 Acre Wood - Tigger's Giant Pot, rare nut reward from Owl.
 * Hollow Bastion - Entrance Hall, on ledge near Lift Stop exit.
 * End of the World - Gate to the Dark x2

Kingdom Hearts II

 * Olympus Coliseum, in the Underworld Entrance.
 * Hollow Bastion, Cavern of Remembrance: Mineshaft
 * Defeating Xemnas in Garden of Assemblage.

Kingdom Hearts
In addition, they can be synthesized from List IV by using the following:


 * 5 Power Shards
 * 3 Power Gems
 * 1 Power Crystal
 * 1 Mystery Goo
 * 2 Orichalcum

Kingdom Hearts Final Mix

 * 5 Spirit Shard
 * 3 Spirit Gem
 * 5 Power Shard
 * 3 Power Gem
 * 1 Dark Matter

Kingdom Hearts II
To synthesize a Power Boost, you need the Guard Recipe and these materials:


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

Trivia

 * Sora's max strength in Kingdom Hearts II is 153. This can be raised to 166 with items and Fenrir, and to 172 by using a Drive Form.
 * After passing the Door to the Final Battle in Kingdom Hearts II, all power and magic boosts are negated.
 * Increasing Sora's strength increases the damage of Goofy's limits and Genie's Valor limit.