What Lv. does the tech. disk have to be to affect other players? Thanks.

Oh, yea, I know this question should be posted in the MAG section, but if I give my MAG from a A-Class to a B-Class ID and have them use the cell on it, will it become the MAG for the A-Class or the B-Class? Thanks, becasue I REALLY want that rubber duck-type MAG.