Please read, this may/may not effect you directly.
Taken from Fire Rescue New South Wales internal webpage:-
"The Duracell national campaign, supported by FRNSW, other state fire services and the Australasian Fire & Emergency Service Authorities Council (AFAC), uses daylight savings as a trigger to remind people to also change their smoke alarm batteries and check their smoke alarms are working when they change their clocks on 7 April."
Any questions just PM.
Cheers
Dave