Do Power Items add on to or replace EVs obtained from defeating wild Pokemon?

Question

Say I'm playing Gen 5, I'm training a Pokemon in Speed, and they've got the Power Anklet. I know Power equipment awards 4 EVs per Pokemon defeated. But is this replacing the EVs that the Pokemon you defeated normally give out or add to them? Like if I'm fighting a bunch of Audino, will I still receive the 2 HP EVs they normally give on top of the 4 Speed EVs or JUST the Speed EVs?

Answer 1

For every battle it has, in addition to the Effort Values gained in the battle, it will gain 4 Speed Effort Values. As of Pokémon Sun & Moon, it now gives 8 Effort Values

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