PV1 wrote:I guess pressing MAX is the key. That last trip to Butler pegged one of the sensors at 107 F (41.6 C) with the fan on high and airflow one click to dash vents.
No AC on in this scenario right, just ambient air?
I disagree with pressing MAX (starting to feel like a broken record). The battery ducting has a lot of flow resistance to it. Using MAX has a marginal effect on the actual volume of the flow to the pack. What it does more of (when running all the air to the pack) is create a lot of back pressure on the blower. Blower motor runs hotter (cooled by the airflow) and the blower uses more power per volume of air moved.
If you are cooling the pack only . . . then MAX doesn't make much sense while driving. If you are running significant air out the dash vents too (at least two clicks to the dash vents) then OK, MAX could make sense.
As far as cooling the pack with cold air from the AC while driving. Doesn't it make more sense to run less colder air into the pack than more, less cool air? If you run enough cool air into the pack you are also pushing cool air out of the back of the pack which isn't too thrifty. Better to run slower colder air in. The cells are at the bottom of the pack, the exhaust vent is at the top back. Bathe those cells in nice cold air (Cold air falls) and let it languish around them until warmed up (warm air rises) to be gently pushed out of the rear, top, pack vent.
Even with a quite a few 104F days this summer I never found MAX necessary except for the initial blow out of a very hot (parked in the sun) car.
As a rule of thumb properly using the AC for cooling the pack can keep the battery 9 to 12 deg F cooler (average temp) than using the systems as Mitsu intended for the same conditions.
Try it, "you just might find, that you get what you need"