I have not had any trouble with turning them off, nor have I experienced any issues with them bereaking or exploding. I do have one complaint though that is very frustrating and that is that I have had them not light up when shot and therefor defeating the purpose for shooting the lighted nock. I have not used other brands like Firenock.....I was under the beleif that the Ravin "Lumenok" was the only nock that fit in the Ravin Bolts. Do the Firenocks fit properly in the Ravin nock inserts? Also if they do what is the proper size as Im surev they make different sizes for differnt arrows.....