In article , George
Miles wrote:
I have several emergency lights over the stairs etc, which light up when
the mains fails.

But if they only last 4 hours, and the power trips when i'm asleep at
midnight, and fire breaks out at 6 a.m. or i need to get up, they will
be flat.

So recommendations for emergency lights with longer lasting batteries
please?

George

you probably won't find any. The standard specification for emergency
lights is 3 hours.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle