yes there's a battery in there.you just don't know what you are looking for.do a google search with the make/model of your alarm/replacement battery.most likely show you a picture of the battery and the price.
sherlock h, November 2011
change the panels internal backup battery
wirecutterman, November 2011
ps forgot to say have had panel off an box in cupboard an the one on inside wall and no where for a battery to go so please help I cant afford to get anyone out as Im long term sick
Sandra, November 2011
edit
I can answer this question...
help my alarm goes off when no power and I cant stop it?
