I don't need to watch a 13-minute video to know that global population is going to top out around 9 billion and start to decline later this century, unless something has changed that I don't know about (which is possible.) This will be driven primarily by contraceptive practices in the West, a lopsided population pyramid in Japan, gender ratio inequity in China, and a post-industrial level of development pretty much everywhere else. (For what it's worth, post-industrial development seems to be the best birth control on Earth, due to the better education required to achieve it, and the contraceptive methods and female liberation that tend to go along with it.)
As for battery tech, I am aware of sodium-sulfur cells and their applications for mass energy storage. I also know that these types of batteries have fairly limited useful niches--they are no silver bullet.
I'm curious as to what any of that has to do with the Singularity, though. The central issue is whether or not we will be able to create superhuman intelligence. I think it's possible
, in that I can see technology reaching a point where it would be feasible, but the idea of it occurring within our lifetimes is extremely optimistic if not downright naive.
The pro-Singularity arguments in this thread seem to go like this:
"Technologies x, y, and z are being developed... therefore, Singularity soon!"
It's like that Ancient Aliens
guy. "The Pyramids were really hard to build... therefore, aliens!"