Better hybrid performance in really hot weather-

[The Real Maverick]

Floor it one time 0-60 = add 5°F

Regen Brake one time 60-0 = add 5°F

Go - Stop - Go - Stop in congested traffic and you can add 50°F in 30 minutes.

Some tricks of the trade owning an EV in cold weather:

Accelerate hard and brake hard in the first few minutes if you are on the way to a quick charger. The battery will be warmed from the inside and will be conditioned to accept a quick charge by the time you get there.

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[SoonerBrink]

Huh !!!

Not sure what you mean by "run max AC on lowest temperature setting, max fan setting" as that seems to imply you are running that setting constantly which will greatly impact MPGs in the worst way.

For me this works:

When entering a Hot Vehicle and driving I hit the "MAX AC Button".

The "MAX AC Button" turns the Temp to "LO" the lowest setting and runs the FAN at Max Speed.

Then in about a couple of minutes I turn off "MAX AC" and in normal AC mode I set the temp to 78 and the FAN Speed to 3 then a little while later to 2 and finally to 1.

The AC will cycle on when temp gets above 78 and off when below 78 just like the thermostat in your home.

I thought non-auto setting meant, that the vent blew air at that temp, and auto meant it cooled the cabin to that setting. Are you using auto or non auto temp?

Is there a difference under when the compressors cycles under each setting?

I was trying to figure out what is the best way to get highest mpg while using the a/c. I have been setting it on low and fan speed 1. This way fan uses the least amount of energy because I don’t know exactly how the compressor functions.

If it’s not very hot outside, you can use ac then turn off ac and use the fan for a few minutes and it says cool, then turn on the ac when it warms up, but this is too much of a hassle.

 

[The Real Maverick]

Generally speaking, running at lowest temperature with lowest fan speed will be best.

Freon when it expands is always cold. Damn cold. There is no "medium" temperature.

To get "medium" air at the vents, it is blending cold air with hot air. Just like to get warm water at your shower you need to blend hot water with cold water.

I always believe if I "paid" to get the freon cold, I should use all of it. Why "pay" to get it cold then pay again to warm it back up?

 

[Maverick County XL]

I would like to chime in and add my support to the notion that there is no logical reason why the A/C setting should affect the hybrid battery performance. The battery is liquid cooled with a radiator. If the ambient is very hot it might limit battery charging if the battery gets too warm. How the A/C is set should not have any function in that.

 

[The Real Maverick]

I would like to chime in and add my support to the notion that there is no logical reason why the A/C setting should affect the hybrid battery performance. The battery is liquid cooled with a radiator. If the ambient is very hot it might limit battery charging if the battery gets too warm. How the A/C is set should not have any function in that.

Usually not.

Above 110°F maybe.

See post #34 and #35

 

[MakinDoForNow]

I would like to chime in and add my support to the notion that there is no logical reason why the A/C setting should affect the hybrid battery performance. The battery is liquid cooled with a radiator. If the ambient is very hot it might limit battery charging if the battery gets too warm. How the A/C is set should not have any function in that.

There is an exchanger that can assist battery cooling using the AC refrigerant if ambient is inadequate. Seems like someone posted 118°. I have read a university on lithium ion battery study. The batteries tested kept charging/discharging at higher current levels with increased temperature. They stopped the test as a precaution at 149°F since the crystallization structure would start to soften at 179° and thermal runaway could occur soon after that. They were quite nervous at 149° so it appears that a 30° safety factor would support the 118° being max cutoff. A thought maybe those claiming to get higher mpg at 75-80mph are running AC and the additional cooling allows increased HVB use???

 

[Maverick County XL]

Thanks to those who have educated me on some of the incredible engineering in these little trucks.

 

[Glen Baker LLC]

There is an exchanger that can assist battery cooling using the AC refrigerant if ambient is inadequate. Seems like someone posted 118°. I have read a university on lithium ion battery study. The batteries tested kept charging/discharging at higher current levels with increased temperature. They stopped the test as a precaution at 149°F since the crystallization structure would start to soften at 179° and thermal runaway could occur soon after that. They were quite nervous at 149° so it appears that a 30° safety factor would support the 118° being max cutoff. A thought maybe those claiming to get higher mpg at 75-80mph are running AC and the additional cooling allows increased HVB use???

It was 124° when I was at Furnace Creek this July. The truck ran fine.
Sometimes you see test mules being driven around in black and white camouflage.

 

[The Real Maverick]

Wattage output goes UP with temperature rise. But, high temperatures degrade the longevity.

For an Electric Drag Race where the prize money comes in seconds, I have read they heat the batteries to like 140°F just before the race.

Here is a decent chart. Sorry it is small.

Snip from a Tesla group:

"The batteries want to be fairly warm for max power discharge and that's why the Model S will actually heat the battery when you turn on Ludicrous mode."

 

[Vaportrail]

I checked my mpg...

Still having high temperatures around 100, and up-

 

[dochawk]

Wife complaining about burning up in the back seat...

why would you keep her back there? Mine is quite capable of backseat driving from the front passenger seat . . .

What does the MAX AC do anyway?

historically (but I don't know about now), Max AC on a Ford has meant intake air from outside, rather Han inside. So you would start on regular AC and open windows, and switch over once the inside dropped to ambient temperature.

As this was (at least eventually) controlled by a rotary electrical switch, a simple improvement would have been to draw from the lower temperature of outside/inside.

Something else to consider in these is that turning on systems (such as AC) can have secondary effects. So even though the AC draws energy (inherently lowering mileage), it's possible that, for example, the changes in where fluids are pumped could have other effects. some of which might increase mileage. (which I'd find surprising, but I've had plenty of those over the years!)

And living somewhere where 110+ is routine (Las Vegas), I'm following this closely!

 

[Vaportrail]

I got to use my method again this year after all-

Had the Maverick across town, and let me tell you, it's still extremely hot around here

why would you keeper back there?

Junior has longer legs???

 

[dochawk]

nior has longer legs???

I'm 6'2", brother is 6'4", and little brother 6'0".

None of us would ever have suggested taking the front seat form her!

I suspect that dad would have put such a person on the outside!

 

[Vaportrail]

I'm 6'2", brother is 6'4", and little brother 6'0".

None of us would ever have suggested taking the front seat form her!

I suspect that dad would have put such a person on the outside!

They don't like alpha males actually leading their family around here-

Those old school ways of your dad are sure to get a guy in trouble these days...

I don't much give a damn anymore myself, just along for the ride???

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