Well, now at that age where I was forced recently to purchase a nose hair trimmer, coupled with that the first grey hairs coming through on my head - it wasn't a good month. Was trimming my nose the other night as was my want, was in mid trim when the battery gave up. Sufficed to say, I was attached to the trimmer by a couple of nose hairs, stuck there, no sign of life from the trimmer. Tried tugging, ouch, was the second word after several expletives. Attempted changing the battery while attached to my face, no. So, yes, I had to do it - was running late for work - I had to pull; well the tears, the pain - still not fully recovered. So, the warning here, make sure your batteries are fully operational.