That’s bad. Power cuts will kill your hard drives. A battery backup is a good thing (ups).
My server is an old laptop (broken screen) Server photo contest - #3 by jarod5001 , fortunately we don’t have power cuts but the laptop battery is enough to protect from shutting down the machine in case of power cut.
I placed it behind the TV and plugged the hdmi to the TV because it required a screen connected if I ever reboot the server.