Here is my frank assessment:
1. I doubt such a "perpetual motion machine" is possible, much less exists. As Scotty once said, "You canna break the laws of physics, Captain!" Friction, entropy, and losses in the system are real.
2. Youtube videos can be faked. And many of them ARE faked. You don't want to be naive or a sucker for stuff like this. You can't believe everything you read (or see) on the Internet.
3. Related to #2, have you personally built this machine and demonstrated perpetual motion, free unlimited energy? If not, I would assume it's impossible. Don't you think corporations, electric companies, etc. would LOVE to have free energy to sell to us for 10 cents a kilowatt hour, with no input expenses such as natural gas to burn to produce electricity?
4. In conclusion, the simple machines demonstrated in this 15 minute video are NOT that hard to build and reproduce for yourself. If it's not faked, it should be reproducible. You CAN'T say "I have this video; that's just as good, right? It's as good as me personally building and testing it, since I have this video evidence. He just did it for me." No, it's NOT the same thing.
5. You do realize there are all sorts of such scams and fakes on Youtube and other corners of the Internet -- recipes for free energy, etc. "There's a sucker born every minute." Don't fall for it.
6. The bits about the rechargeable batteries, diodes to prevent discharge, etc. is all basic and sound. But the issue is the alleged perpetual motion machine.