My alarm system has a back-up power battery. What is the life of the battery and how will I know it should be replaced to keep my premises safe?

All good alarm systems have back-up battery power. It ensures they remain for at least 12 hours in the event of a power outage (power cut). When power is restored following an outage, the system is designed to start working normally and also recharge the battery.

All batteries have limited life. Installers will change batteries after a defined period of time, around 3 or 4 years, to minimize the chances of a failing battery causing alarm system malfunction. Your installer typically tests batteries as part of every routine maintenance visit and will change batteries earlier if it is necessary to do so. Replacement battery costs, as with other replacement parts, may be charged over and above your regular maintenance charge.