I already have a camera battery; why would I want to use the Case Relay CPS?

Traditionally, when your camera battery dies, you have to stop your time-lapse, video or studio session, pull out your battery and put a new one in. With the Case Relay that’s a problem of the past. Simply disconnect the battery pack from Case Relay and power your camera with a 5V USB external battery pack or USB wall adapter. Your camera never loses power and you never stop shooting.