HC-600D for Canon EOS 70D With the HC-600D, power is doubled through multiple power sources. One or two Li-Ion batteries* or 6 AA Mignon alkaline or rechargeable Ni-MH batteries can be used.This is especially useful when taking advantage of the camera's movie mode or Live View mode. Built-in power management regulates the power output to the camera for maximum efficiency. The power management detects use of li-ion or AA batteries automatically. The HC-600D is also fitted with a vertical shutter release, making shooting with the camera in a vertical position can be just as comfortable as shooting horizontally. *Batteries not included