Shortly wnat to make clear that i have a single board with 2 lipos 10S 4Ah 25C in parallel. So 10S2P 8Ah 25C = 200 amps. And they don’t sag as much. And i have the 12S8P battery made from laptop cells which sag much more because they are absolutely not build for that, but still do it. But the 25R are build for it and the 0.4 V sag is normal and not an issue.
Otherwise it would mean that they rate it to 20A but tell the costumer that they should not do that.
So what would those 3.8V * 10S = 38V be good for? At 40A on each motor (80A total) it would be 38 * 80 = 3040 watts. That is a bit more than 4 hp and maybe even too much for the most of us. But that depends on everybody’s personal taste and experience.