"David" wrote in message
om...
Hi,

My ageing smoke alarm needs a new 8.4v 30mAh NiCd Cell (about the size of
an AAA battery) with flat top. I'm not really clued up on electronics. I
assume the 30mAh is the charge hold value and it doesn't matter if I get a
cell with a higher value?

Anyway, any idea where I can get a replacement, have looked in Maplins but
to no avail.


Best not to switch to different battery types unless you can get the exact
same voltage. I did that, and the alarm kept going off.

For the price of a new smoke alarm, get a new one. I wouldn't trust my life
to an "aging smoke alarm." I recently discovered that my 3-year old alarm
wasn't working anymore, when I heard a faint beeping sound, barely audible,
and traced it back to my smoke alarm. Humidity had corroded the speaker, and
I didn't know it.