Set the alarm for 12:39 a.m.

Web alarm clock for 12:39 a.m.

You are getting the emergency lights charged now, before a power interruption leaves you searching in the dark. Set the alarm for 12:39 am so you can check each indicator, unplug any full units, and keep the remaining ones connected before 1:00 am. That gives you a clear checkpoint while the house is still quiet and the lights are not yet urgently needed.

Your emergency-light check could be easy to miss if the phone is on silent, even when the alarm is set correctly. Raise the alarm volume and allow sound for the browser before leaving the charger area. Keep this page open and the phone awake: if either is shut down, the emergency lights may stay connected without the reminder sounding. A quick test alarm can confirm that the alert is audible from where you will be waiting.

While checking chargers late at night, keep the phone screen dim and use a warmer display setting if available. Place it where the 12:39 am alert can be heard without needing to stare at the screen, then read the charging indicators under a steady room light. This reduces harsh glare while your eyes move between the display, sockets, and emergency lights.