The Serafim S3 doesn’t come with a built-in battery. It uses very minimal power from your phone, so much so that you can keep it connected overnight without seeing a noticeable impact on your phone’s battery life.

However, mobile games can consume a significant amount of power because of graphics, networking, and audio. To address the importance of battery life for mobile gaming, we’ve added a pass-through charging port to the Serafim S3, allowing you to charge your phone while you play.