“I haven’t run the numbers but that claim implies a very high charging rate. I’d suggest standing back, way back.”
The thing is, that’s what capacitors do.
I have been toying with that Idea for a long time. Looks like someone else did too and put it into practice. We shall see if it actually works in a commercially acceptable means.
Yes, that's true. When they're discharged, though, caps present (almost) a short circuit load to the charging circuit. That initial load can cause a huge in-rush current to flow. I'd like to see the specs on that 5-minute charge time.