On route battery warm up?

[iwannam3]

I thought a limitation of charging rate was getting rid of excessive heat? Why do you need to pre-heat them before high rate charging, do they get colder when charging?

 

[jdcollins5]

It prepares the battery for better charging. That could be preheating in cold weather or cooling in hot weather.

 

[cybergates]

Anyone know which firmware version supports this?

 

[thaian207]

mine is 2019.8.5 and I have it, this feature is automatic when you set Nav to a supercharger station.

 

[Zoomit]

mine is 2019.8.5 and I have it, this feature is automatic when you set Nav to a supercharger station.

You sure? I have 8.5 and definitely don't have On Route Battery Warmup.

 

[bmms8]

You sure? I have 8.5 and definitely don't have On Route Battery Warmup.

I agree, its on 2019.12.1

 

[thaian207]

my bad I don't have it

 

[ewoodrick]

This is funny, for a feature that ONLY helps the folks in colder climates, its the folks that don't have any cold that seem to be worrying about it.

 

[CCIE]

It would have been nice to get it while it was still cold around here! Not sure why Tesla is dragging their feet on this one.

 

[turok3000]

For those that have 2019.12.x, is there a visual indication somewhere when preheating is occurring ? I tried navigate to my nearest supercharger but didn't see any indication in battery settings. However, I was 17 minutes drive away so I thinking maybe it only starts once you're perhaps 10 minutes away ?

 

[Jedi2155]

On-route warm-up only came in 2019.12.1.
2019.8.5 did not have this.

Lithium-Ion batteries have very peculiar temperature requirements.

For maximum STORAGE LIFE, you want the batteries as cold as possible.
For maximum POWER (charging, accelerating, discharging), you want it to be ~40-50C (100-120 F) - this is what On-Route battery warm-up and Ludicrous launches does.
For SAFE operation, the battery should not be used if its below 40 F (the car will warm up the battery in cold weather for this). It can cause lithium metal plating otherwise.

 

[Zoomit]

you want it to be ~40-50C (100-120 F) - this is what On-Route battery warm-up [...] does

Yup—a Tesla engineer heavily implied at the V3 SC demo that the battery needs to be at 40C (104F) to allow peak charge rate.

 

[tmxninja]

I have the 2019.12.x, and I can't tell if the battery is warming. I set the route to supercharger which is 25 min away (part of the drive on local roads, part on highway). I always start out with a cold battery, and it charges at the same speed it always does even when there is no other Tesla plugged in at that station. How long does this battery warming take?