Why does my "01 Hyundai Elantra battery continue to die? on 2001 Hyundai Elantra

I am orginal owner of "01 Elantra with little over 46,000 miles. I have purchased 3 batteries in just over year and half. The battery continues to die. I have to have the car jumped on average 3 times a week. I have concluded it may not be battery but possible electrical. It in particular is bad about this in cold weather. The dome light no longer works, the clock does not work, and I have experienced minor electrical issues with the windows. Does anyone else have this problem and do you know what can be done. Admittedly, I am not car savy and not good with car language.

Asked by for the 2001 Hyundai Elantra
Perhaps a "hidden" light has been left on i.e. glove box, trunk, under hood etc.
Perhaps you have an excessive parasytic battery drain, or bad voltage regulator circuit not opening when vehicle is shut down.