Not happy with this unit - LaserMax CenterFire Laser Sight for Ruger LCP Pistols

I purchased a GS-LCP2-G a couple of years ago and am not happy with it. When it works its nice but the battery life is less than 90 DAYS. With the unit mounted and stored in the safe, Not being used, And the grip sense turned off I do a quick on/off test once a month that lasts for 2-3 seconds. Within 3 months the battery is dead, that averages out to be a total "ON" time of 9 seconds per battery. Not a very practical home defense weapon if I have to remember to replace a $5 battery every 2 months to insure it will work when I need it. I contacted Lasermax and they replaced the original unit under warranty and the second unit did the same thing. Contacted them again and they sent me two free batteries, nice try but it still does the same thing. Have contacted them again today to see what they will do.