Ideal Security Rechargeable Built-in Battery Operated Emergency Light, White (200 Lumens), Single

LED Light: The emergency lights for home power failure turn on automatically when there power goes out and includes a night light option with a photocell sensor.
Battery Powered Light: Equipped with LEDs and a long-lasting battery, this emergency lamp lasts up to 16 hours at 50% brightness and 8 hours at 100% brightness.
Home Security: This security light makes for the best emergency preparedness items in any event that leaves your home in the dark.