Insane + Tesla Battery Preheat
|Tesla app battery preheat icon|
In my recent winter road trip essay, I recommend preheating the cabin while still being plugged in, which is one of the more useful features you often see recommended to maximize winter range. The one feature I didn't remember to try out on that trip, but did on a subsequent trip was a battery preheat "hack" specific to the pre-Ludicrous Tesla P models that have the "Insane" acceleration feature. All others can tune out at this point other than to stress that battery temperature has an effect on range.
If you prefer a video overview, jump to this short YouTube video on the topic: https://youtu.be/mF6LcMYUwcs
|Limited braking regeneration (dotted yellow lines)|
|Max Battery Power dialog|
Turn On Insane + Max Battery Power
If so equipped, your P-model has Acceleration modes:
- Insane +
I find this much more useful as a battery heater on a cold-soaked battery. So here's the procedure I follow:
- Charge the car overnight to my intended max state of charge, normally 90% on road trips.
- Go to the car (unfortunately you can't do this from the app) about 30-45 minutes before departure.
- From the main menu, select Driving -> Acceleration -> Insane+.
- One the next dialog box, engage the Maximum Battery Power.
- Go back inside and get warm for about 30 minutes, get some coffee, etc.
- When you return to the car, select Driving -> Acceleration -> Sport and battery heating will be turned off.
- I'm reluctant to let the heater go for more than 1 hour since general wisdom indicates that hot batteries lead to early degradation.
If you open your app to the Climate screen, you'll se a small red battery icon with a snowflake inside to indicate heating is active.
After this procedure I found that the energy use was in line with normal winter use (around 350 Wh/mile) rather than 400-500 Wh/mile and the dotted regeneration limitation was gone right from the start.
What's Your Take?
I've never heard anyone tell me that this is bad for the battery since I believe it's the same heater that gets activated when you start driving. I'm wondering why Tesla doesn't activate this as a feature for all Tesla Models with active battery heating.
- Charging Networks
- Coming to Muskegon and need a charge? See my listing on EVMatch: https://www.evmatch.com/public/562
- Follow me on Instagram: @muskegonevguy
- See also my Plug In West Michigan podcast on WKTV Community Media.
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