Kent
1 kW
Here are two fascinating videos by a mechanical engineer. One is a Volt battery pack teardown and the other a look at the Volt drive train.
http://www.treehugger.com/cars/2013-chevy-volts-battery-gets-dissected-some-guys-garage-video.html
http://www.treehugger.com/cars/2013-chevy-volts-battery-gets-dissected-some-guys-garage-video.html