I am about to replace the `d` batteries on my wireless alarm box (yale). I purchased fresh batteries that have a best before of 2019. The alarm states 2 years or more for the life of the batteries. The alarm is rarely used, maybe 4 times a year but thats for switching it on and off and it has never gone off in anger yet. With this rate of usage should I get pretty near the `best before` date before having to replace again or is there some other reason once installed they would consume the power from the batteries.
- posted
10 years ago