Oh, that's even truer neutral! I'll definitely use that over half capacity, now. 

I thought capacity was how much it could hold, and then half capacity would imply it is at half the amount that it can hold. But I guess "at capacity" can be substituted for "full," so I do see how that is still not 100% neutral. 

It was correct to me, but I guess isn't correct to everyone. Shoulda done my research on a post that's so closely linked to linguistics, I guess! (Although, it isn't quite all the way. It doesn't break rule 5 mods, please don't delete it!)