With the Fotodiox Pro Turbopack 9000 Kit, you can connect Turbopack power supply directly to your lens, and power it for hours of dramatic zooms. The Turbopack 9000 does not have a "sleep" function, so your lens is fully powered at all times, ready to go at a moment's notice. Also built-in is a USB port that can be used to power your camera, or charge a phone or tablet, etc.
Provides power to the Zoom Servo functions including quick zoom, cruise zoom & memory functions
Battery does not have a sleep function, so the lens will always be ready to go
Built-in power indicator lets you know when the battery needs a recharge