SirNickity:
Amp-hours is amp-hours, regardless how you store it.I guess you could, in theory, charge the "boost cap" at like 200V with suitably lower amperage, and then locally regulate that down to a few amps at nominal voltage for charging. But good luck getting that approved for consumer use in any regulated country.
I fully agree on this one.
But if you can regulate that down for charging why would you? I mean why not simply run from the 200V boost cap and drop the battery?
Best regards
Jantje