1, the emergency light is normally connected to the power supply, which means that it is ready to deal with emergencies at any time, and it will automatically light up in case of failure and abnormality.
2. There is a battery in the emergency light, and the lighting in the accident state is discharged by the battery. Because emergency lights only work in emergencies, they are almost always charged. In order to prevent the battery from being overcharged and ensure the normal use of the emergency light, the user of the emergency light is required to completely discharge the emergency light once a month. And record the discharge time, when the discharge time is less than 30 minutes, it is necessary to replace the emergency light.