Ive installed new batteries and had to replace them within a few months. It could have a bad cell, or just starting to go out. Head over to your autostore and get a battery test done. Only way to find out for sure
You know, you make an excellent point! I did check the water in mine.........and it WAS low. I topped it off, thinking I should be fine, but again, you do make a great point. I should have the charging system checked.
Thanks!