I would agree that these aren't the most popular videos on Youtube but if you recognize that they represent a massive sales initiative for Electrovaya's lithium-ion batteries they're hard not to get excited about.

Here's the 7000 series video:https://www.youtube.com/watch?v=uEB6FHdMTMg

And I quote, "our batteries are long lasting, fast charging, higher density, offer more power and increased run time between charges for increased productivity. And with no need to buy or store spare batteries you will see dramatic cost savings."