Eh, you probably don't want on-full-blast. Besides wasting power, they're pretty noisy when they get going.I still have the 2 separate fans and my speeds jump around all over the place. I would be happy if they were a straight on and off, but they seem to be variable, I have not even looked at my new fans to see if they have multi or variable speeds, I’m just happy they are working again
Watching my OVMSv3 display, it looks like the PEM controls the fan to keep the temps right at about 39C. They start when the PEM reaches around 35C with about 4 volts, ramp up to 7v for the session, back down after charging, and turn off again at about 35C. Ambient here was 26C during the session.