My garage door was installed on our new construction home 6 months ago. Initial 9v battery lasted only a couple months. I changed the battery and the next time I went to use it the battery was dead again have changed the battery 3 times now. We don’t use the keypad very often maybe once a month but it should still last 2-3 years. Like I said, it’s only 6 months old so I can’t imagine any corrosion or sticking buttons at this point. Any other ideas on what could be causing this or how to fix it?