A few months ago, we introduced you to Spyder Digital Research and its PowerShadow Series i4 battery case and charge/sync dock for the iPhone 4 and 4S.

The i4 has a polycarbonate shell with a satin rubber finish, and doesn't block access to an iOS device's ports, inputs, or outputs. It features 2000 mAh power capacity that can provide up to eight hours of extra talk time while on a 3G network, 44 hours of music playback, and 11 hours of video playback. It also comes, of course with the charge/sync dock.

Yesterday at CWTS, we caught up with Michael Nitti, the President of Spyder Digital Research to have a closer look at the device. Check out the video below for more.

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