Tskj series cold light source miner's adopts the lithium Battery with safe polymer as power supply, takes high-power LED as light-hours, and use exactIC TO Protect parts. It has so many virtus, such as miniaturization Light weight, safety environmental protection, energy saving. High efficiency, avoid maintenance and long life. Preventing over-charging and over-discharging, limiting current and short circuit protection etc. So it is designed for illumination in the environment of having combustible gas mixture, such as coal mine, petroleum, chemical railway etc.