The product is a new generation of miners alarm cap lamp that is safe, energy save, has the function of lighting and methane-overrun alarm. The main light source adopts the international advanced LED, high efficient and long life. The switch of lamp head make use of touch-mode electronic switch, good hermetization and easy to use. With the microprocessor control chip inside, it has many self-protection function, intelligent manage the process of charging and discharging, and can be charged by all kinds of charger. With maintenance free lead acid battery pile as electronic source, it has a good cost performance, safe and reliable.