In the core series games
A Pokémon holding this item gains 4 HP EVs whenever it gains experience in battle (EVs are awarded for each Pokémon knocked out in Horde Battles despite experience being gained all at once); its effect is doubled by Pokérus. (In Generation IV, level 100 Pokémon cannot gain EVs in battle; from Generation V onward, they gain EVs whenever they would earn experience.)
The Speed stat of the Pokémon holding this item is halved during battle.
Generation VII onwards
Outside of battle
From Pokémon HeartGold and SoulSilver onward, if this item is held by a parent when breeding at Pokémon Day Care or a Pokémon Nursery, the HP IV of a parent holding a Power Weight will always be passed down to the child. If both parents hold a Power Weight, one parent will be selected at random to pass down its HP IV.
Scarlet and Violet
In other languages
- On Smogon Itemdex:
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|This item article is part of Project ItemDex, a Bulbapedia project that aims to write comprehensive articles on all items.