This isn't a place that you go a whole lot - but BOY are they helpful when you need them!
I brought in my cordless phone that has some special battery internally that was slowly dying to the point that I could only talk on the phone for about 10 minutes per charge. Not so fun. I brought the phone here and the guy was super helpful to find the right battery that would work. While I was there I saw folks getting batteries for SO many amazing and unique things.
So if you're looking for something a little more complex than a Duracell AA, you should give them a call. And even if that's all you think you want - if you're in the area you might want to go by because based on what kind of product you're using it for, I heard them suggest different brands/types of AA battery. Not something I normally want to think about - but handy to know.