If it's a proper competition, I'd say maybe 10% at absolute most (would allow 1550g), but I think 20g like Harry says would be a more suitable figure for it.
I suppose you could still let it slide for whiteboard fights etc if there will be any of those but if it's a proper competition I'd say to keep it as low as possible, as much as I'd like an extra 100g given the only battery I have takes up a third of the weight limit, but still...
Bookmarks