Review on DARKBEAM UV Flashlight 395Nm Blacklight Rechargeable USB, Wood'S Lamp Ultraviolet Black Light Handheld LED Portable With Clip, Resin Curing, Anti-Counterfeit, Detector For Pet Dog Urine, 2 Pack by Keith Harris

Bought product because of battery size, life and intensity. Wasn't at all disappointed by intensity or the battery in it.the life.30 minutes of use after full night of charging and dead. I was noticing flickering and it auto shutting off. However I could hear the battery kind of moving around a bit. So I shook the flashlight and it flashed red and shut off. Repeated same thing. Pulled the negative post out with pliers and slightly stretched and viola! Now working great. It does get warm if you leave it on in your pocket accidently. Can't figure out the 3 different settings as there is no instructions but I like the high intensity mode and it's lasting quite a while. 5 out of 5 cause I don't need the other 3 modes. I've also already dropped it twice once hard and it still works and looks fine.