[NAME]Anyone know anything on how much damage Beat Up can do or how it's calculated?
Beat Up
[SHORT DESC]
All healthy Pokemon aid in damaging the target.
[LONG DESC]
All Pokemon that are not fainted and do not have a status condition do a 10 power typeless attack on the target. Beat Up uses base Attack and base Defense for these calculations; EVs, IVs, and Natures are irrelevant. Beat Up hits through WonderGuard, even if the Pokemon isn't weak to Dark.
Straight from our Move Descriptions thread in the D/P Analyses forum.
Does that help?