I charge between 1-1.5C usually. 2 of my chargers top out at 20A/500W, so I put 4 of my 6S 5000mah 40C CNHL's on a parallel board, run it at 20A, then on my second 20A charger, I put a couple 6S 45C 6200mah liperiors (or 4S 5000mah 65C liperiors) at 15A.Are you guys charging your batts faster than 1c?
I have 2 6S packs I built out of 2x3S 65C 5000mah liperior and 2x3S 65C CNHL 5000mah packs. They don't match anything else, so I have to charge them on their own. Usually throw them on my dynamite 4x100W/4x10A charger on a couple ports at 10A, but it throttles itself down to just under 5A because it hits the 100W ceiling.