As LED lighting continues to become more and more popular, it's important to understand the purpose of a ballast and how it plays a critical role in ensuring efficient and effective illumination. Put simply, a ballast is an electrical device that regulates the flow of current to the LED light, helping to maintain a consistent level of brightness and extending the lifespan of the bulb. https://buyledonline.com/blog/post/the-ultimate-guide-how-to-test-a-ballast-and-ensure-efficient-lighting