Mostly Great

I really like using these lighted nocks and the solid green ones work best for me for visibility, especially while shooting indoors or in low light settings. However, I seem to get 1 of 3 nocks that quit functioning completely or at least quit functioning consistently. It does me no good to have a lighted nock that doesn't work and I can't depend on it when I take a shot on an animal. It becomes a waste of money for what I'm getting.