BattlefieldMinimap precise position?

The map has to be shown at least once before you can move it. The SetUserPlaced probably won’t work as the map is Load on Demand.

A small addon to move the map when it loads would probably be your best bet if the macro is too much hassle.

You could paste the following into the website addon.bool.no to create/downoad said addon.

local f = CreateFrame("Frame")
f:RegisterEvent("ADDON_LOADED")
f:SetScript("OnEvent", function(self, event, addon)
	if addon == "Blizzard_BattlefieldMap" then
		self:UnregisterAllEvents()
		hooksecurefunc(BattlefieldMapTab, "SetPoint", function(self)
			if self.OnHook then
				self.OnHook = nil
				return
			end
			self.OnHook = true
			self:ClearAllPoints() 
			self:SetPoint("CENTER", UIParent, -200, 200)
		end)
	end
end)

Adjust the -200, 200 (X, Y) to move the frame relative to the center of the screen.