I think it’s five. I tried spawning more than five one time, but the total damage from the charge attack was base charge attack damage plus damage of detonating five tears. You can first launch the opponent and then detonate tears, as demonstrated in a video on the skullgirls mobile Twitter. I used to do a standard ground to air combo and then use the time when the opponent is flat on the ground to get into my charge attack stance and the tears will detonate when the opponent stands up and deal damage, but I have found that you shouldn’t do it with Filia because she will evade it and then hit you with Gregor Samson before you have time to block.