Get a battery check first,some garages do it for free,if it's ok the alarm may not have been fitted correctly.If you have an old /weak battery it will drain it quickly,when you used to switch the car off the battery kept the charge it had until you started again,now the alarm is draining the battery as its active when your away,they all do,get your batt checked first,it will let you down big time soon even if you take the alarm off.
Rich, May 2007