It is the "RACER" spec of way to discharge @ 40A and charge them @ 40A to PEAK the battery performance at its best. Also, the battery need to be use/run within minutes after charged, otherwise, there is no benefit of doing so.

I can't really bother to do that type of "cycle" as that 0.1s faster is not going to get me to A-main.............even though I have the charger/discharge bank to do so.

But it is something new to learn.....