Is your flashlight not as bright as it used to be? And by "not as bright" I mean it doesn't even turn on, even though the battery is charged? Seriously, the batteries are charged, but its not even turning on, is it? I knew it, it's the bulb. What you need is one of these replacement 20 watt Bi-Pin bulbs from Streamlight. Your Streamlight LiteBox flashlight is nothing without it. And hey, while you're here, grab a few - save on shipping (by ordering just one time) and have a spare - or two.