In Pokémon GO, the player can Power Up (Japanese: 強化 strengthen) a Pokémon using Stardust and Candy to increase its stats. This is analogous to raising a Pokémon's level in the core series games, but no explicit numeric level is ever given for Pokémon in Pokémon GO.
Powering Up a Pokémon raises its stats, which is reflected on the Pokémon's summary screen in its HP and CP. Upon pressing the Power Up button, the game will show how much the CP will be increased and ask the player to confirm. If a Pokémon gains maximum HP this way, it also gains an equal amount of remaining HP; consequently, if a fainted Pokémon is Powered Up, it will be revived with a remaining HP equal to the amount of HP it gained.
Each Pokémon effectively has a Power Up "level" that determines its CP multiplier, a value used to calculate the Pokémon's stats and catch rate. Each Power Up increases the Power Up level by 0.5, up to the player's Trainer level + 2. The cost to Power Up a Pokémon increases every two levels (or every four Power Ups). The half-circle gauge on a Pokémon's summary screen indicates how close it is to this limit. The highest possible Power Up level is 40. If a player is to be traded a Pokémon that exceeds their Power Up limit (Trainer level + 2), then both players will see a warning that the Pokémon's level will be reduced to the limit. For certain encounter types, if the Pokémon's type has a Weather Boost, its Power Up level will be 5 higher than what it was originally supposed to be, even if it exceeds the Power Up limit.
Initial Power Up level
Pokémon can only be obtained at whole-number Power Up levels, including those from trades, in which the Power Up levels are rounded down. The following shows the possible range of initial Power Up levels for each encounter type.
|Encounter||Power Up level||Weather Boost|
Powering Up a Pokémon requires both Stardust and Candy. The amount of Stardust and Candy required for the next Power Up will be shown on the Pokémon's summary screen. If the Pokémon is at the maximum Power Up level for the player's Trainer level, then the player will not be able to Power Up the Pokémon. Each time a Pokémon is Powered Up, stats are recalculated using the CP multiplier, which increases with level.
The following table shows the CP multiplier that corresponds to each Power Up level, along with the costs needed to Power Up to the next level. Cumulative costs show the total amount of Stardust and Candy needed to Power Up a Pokémon from Level 1. Levels 41 to 45 are unattainable by powering up, but have been coded into the game since the launch of Buddy Adventure. The CP multiplier for Level 41 is only attainable by a Level 40 Best Buddy currently deployed as the player's Buddy Pokémon. The CP multiplier for Level 45 is only attained by team leaders while Battle Training in Master League.
Lucky Pokémon require only 50% of the listed Stardust costs to Power Up. Shadow Pokémon cost 1.2× the listed Stardust and Candy to Power Up, while Purified Pokémon only require 90% of the listed Stardust and Candy costs (rounded up). Stardust reduction bonuses for Lucky and Purified Pokémon can stack, meaning that a Pokémon that is both Lucky and Purified only costs 45% of the normal Stardust amount to Power Up.
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