I did some break-in hovers friday and charged between them.
Did some more today then finally flew it after 4 break in flights.
I can't tell any performance differance between these and my 25C nanotechs of the same size.
These batteries are larger capacities than my Nanotechs but I found one thing interesting.
My 25C 6S 5000 Nanotech is 766g
The Gens Ace 30C 6S 5300 is 750g
It fit in my 550 just fine.
The 6S 3300 won't fit in a 500 unless you do the TRAY MOD on an older frame style.
The 3S was pretty much the same weight as the nanotech.
So far, the Gens are on par or better than the Nanotechs.
I'll start fast charging this week.