It's kinda hard to imagine how they fit an 80 kW pack into one of these cars. If ever been inside the Prius Battery ECU what this dude is up to should be almost obvious, if not than it's kinds difficult to follow along, but I imagine Prof Kellys' vids are hard to follow for some too. Just another video inside a pack, this time it's a leaf pack. There's a followup that dives deeper inside the part from a similar car, so we could see what it looks like when one of these parts fails. The followup is linked at the end of the video - kudos for that.