The emergency light is with built-in long-life and maintenance-free rechargeable lead acid battery of high capacity as 1600mAh. The battery has more than 500 times charging and discharging recycle life. LED is in advantages of energy-saving, high light, long life and high power. Both high light and dim light for choices. Instruction: During charging, please connect cable with hole into AC outlet of emergency light, then insert cable of AC plug into AC 90 – 240 volts power socket, the charging indicator turns on to show the charging process, which needs about 20 hours. During charging, the emergency light to both flashlight function and emergency function will not turn on, after pushing the switch up or down, while you can choose function of flashlight or emergency when power source cut off, or the AC plug is pulled out from power socket. To push the button is to control turning on and turning off.