Up on the stairwell ,landing and loo,we have Eveready battery ones ( have had awhile),and they’ve been good too. Especially good at night when you need the loo,as the LED mains light is rather harsh and disruptive- and the approach lights obviously turn themselves on.
I’m replacing our kitchen right now,and the wall mounted units will have similar beneath them. I don’t know the brand ,but Mrs J picked them up and they are very good too. All sorts out there.
So if you are looking for emergency lights,or leccy- saving lights,these are rather good. In fact,if a preppers emergency lights are basically paraffin or the real fire hazard - candles