I find it cool too! Rough numbers I'm seeing say that the pack is around 400 pounds, which is pretty impressive.
That is awesome, love it. Progress is a good thing.
I mentioned my dad's volt above; he was waiting on a coolant pump, not a valve. My mistake. He is back on the road, hope you are soon as well.
NevynPA, if my memory is correct 400 lbs should be about right.
2013 Chevrolet Volt