I can tell you that I have seen 455 at 30 amps in my shop. I will also say that they were rare. The longest individual runtime cell I have seen in a gp3300 was 462 @ 30 amps. 1 Cell. There are plenty of 430 cells around like Speedxl said. We got a fair amount on hand on any given day. I will also agree that the average cells have had less runtime in the last 4 months from Gp. I match lots of cases every month so I have plenty of exposure to whats the norm with cells.
John Malin
Fusion batteries
Productioin Manager