Illinois Battery has been around as long as I can remember. I have taken several of my cars to them thru-out the years. They sell their own brand of car battery. Their customer service is great and they stand behind their products. They have in my opinion some of the best car battterys on the market. The place itself is not much to look at but who cares; it's an auto shop. It's easy to find, it's aprox. one block west of Western Ave. on Irving Park. Call first if you are concered about waiting.