Batteries are a source of electricity that use chemicals to produce electricity. They can be either wet-cell or dry-cell batteries. A good example of a wet battery is a car battery, because it contains sulfuric acid. A dry-cell battery contains a chemical paste instead of liquid acid. In this electrochemistry box kit, you'll learn how to make your very own wet-cell battery using vinegar--you'll be able to light an LED light with the items provided! A compact and fun set, this makes a great science fair project. You can also use it for classroom demonstrations.