Yes, there are stores that accept old car batteries. You can either recycle the battery by bringing it to a recycling center (like what most car repair shops have) or sell it on eBay. The value of the battery will depend on many factors such as age and need for size. If the old battery is worth more than your average one, you might want to put up an ad in order to get an estimate of how much the company would pay you for its return before recycling it yourself.