I have a 2002 Elantra GLS and recently, I had some issues with the battery/ alternator. I had the battery tested and then replaced, then the same for the alternator. The problem is that the new alternator isn't charging the battery. I'm trying to avoid having to take it into a mechanic due to money issues. Is there anything I can do myself to get it to charge the battery so that I can go to work and back?