Viper 791XV remote

My remote has worked just fine and still does, but I have a couple questions about it. First of all, should it be eating a AAA battery every month? It is set on the default settings, so it does receive the signal from the car (2 way) and it beeps when I push buttons. I know having it two way will shorten the batter life, but that much? How long should it go on one battery? Also, the beeping noise that it makes just suddenly went almost silent and you can barely hear it when you press the buttons. I don't mind this for pressing the buttons, but I would like to be able to hear it when the alarm is going off and it's letting me know that it's going off. No, I have NO warranty on the alarm as I installed it myself. Thanks.

I think its a common problem to eat up batteries. Thats about how long mine last, usually a month. Dont know much about the beeps going quiet.

I remote start all the time, remote lock and unlock and even pop the trunk with the remote and I have mine on vibrate, back light and receive. I change the battery at the beginning of each month. If I forget it usually goes dead in the fifth week. I use Duracells.

The backlight is not on and it's not on vibrate cause I figured that would kill the battery quicker. I guess it's just normal to replace it monthly. I'm gonna get some rechargeables.