Thanks Alan,
But I had the solution,I have so much documentation that I didn't know it, here is what I found in Scott Bowden's book "ARMIES at WATERLOO" page 321:
From I Army Corps:
6th Foot Artillery Regt., 20th company (Division Quiot)
6th Foot Artillery Regt., 10th company (Donzelot Division)
6th Foot Artillery Regt., 19th company (Marcognet Division)
6th Foot Artillery Regt., 11th company*(Corps Artillery Reserve)
From II Army Corps:
2nd Foot Artillery Regt., 7th company*(Corps Artillery Reserve)
From VI Army Corps:
8th Foot Artillery Regt., 4th company*(Corps Artillery Reserve)
From the Imperial Guard:
Old Guard Foot Art.Regt., 1st company*
Old Guard Foot Art.Regt., 2nd company*
Old Guard Foot Art.Regt., 3rd company*
Old Guard Foot Art.Regt., 4th company*
Initial composition of the grand battery totalled 80 pieces of ordnance.
* Indicates 12 – pounder artillery companies.
The 6th Foot Artillery Regt., 10th company, and the 6th Foot Artillery Regt., 19th company were overrun and put out of commission during the charge of the Union Brigade.
The grand battery was subsequently reinforced by one company of horse artillery from Milhaud's IV Reserve Cavalry Corps (which one? The 5th company of the 1st Horse Artillery Regiment or the 4th company of the 3rd Horse Artillery Regiment?) and by the four companies of the Old Guard Horse Artilery.