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Battery Percentage Display

Would you please show me how to get my battery gauge to display in Percentage instead of Distance?

It's always in Distance, no matter of what I do!

Page 42 of Owner Manual says:

"Total estimated driving distance (or energy) available. Instead of driving distance as shown
here, you can display the percentage of battery energy remaining. To do so, touch Controls >
Settings > Units & Format > Energy & Charging (see Settings on page 67)."

What does your 17" screen say? Mine says:

Controls > Settings > Units & Format > Charging Units > [Energy] or [Distance]

That only affects the display of charging speed during a charge such as [5kW] or [15 MPH].

I don't think you can do it. Visible Tesla will do it. Also you can turn on the charging screen and approximate the percent battery remaining from there.

@SCCRENDO

Thanks! I just want to make sure I didn't miss a new feature from revision 5.9 :)

Not an option yet, but the Teslas that did the Coat to Coast thing were able to show SoC, so maybe a 6.x feature?

O

@omarsultan

Now you mentioned it. I look back at the tweet:

https://twitter.com/TeslaMotors/status/429468329997115392/photo/1

It's blurry but that's definitely a 19% in the photo (Rated/Ideal Miles are not labeled under the number "19")

You have found a glitch. On page 92 of the current online manual it says this selection will give status in distance or remaining energy. I assume by remaining energy it would show kWh.

But then the in car manual 24xxx VIN on 5.9....109 it says, "Charging Units : Display charging units as either the percentage of battery energy remaining, or distance remaining.

To add further mystery when you change the setting....nothing changes on the displayed range.

And for the rest of the story, since it's charge units the only place it actually changes is the little info displayed when the car is actually charging. The info box on the left side of both charge status screens changes to kW charged rather than miles charged.

But in response to your question both manuals are wrong and what does change is what is displayed during actual charging and is shown as miles charged and charge rate in miles or kWh charged and the charging kW rate.

At least that's what my test determined.

I am on 5.11 and running into this as well; no change in the instrument cluster when I change the setting, just kW instead of miles/hour on the charging screen.

I am not good at understanding how Tesla would display its battery gauge, so let me ask a question please.

What good is a percentage display in the following scenario:

Currently, you can set your charge at 100% (or any percentage you want.)

For a new battery, a full charge, a charge set at 100%, will display "charge complete" and 265 rated miles.

However, as the battery gets old, it degrades a lot, so when you set it to a full charge and it stops to charge and displays "charge complete" at 100 rated miles.

So if the battery gauge displays 100% for that old battery, that doesn't mean its range is 265 rated miles. It's only 100 rated miles.

It sounds like we need more than percentage display. Don't we need voltage display as well, so we can figure out that this 100% full charge can only take us 100 miles not 265 miles?

Tam, just use miles. Percentage is not useful information. I can't think of any thing useful in seeing a percentage. What does a percentage number teach you that is useful when operating the car.

I think you are hoping to see a number that will tell you how the battery today compares to a new battery. Miles will give you a better measure. If you want to see mileage loss as a percent just divide your current full charge miles by the full charge miles when new.

Measuring energy in a battery is a little tricky because there is no accurite way to instantaneously determine the exact energy contained in a battery. Software is used to estimate the energy in the battery. It can't be measured but it can be calculated and estimated based on operating performance data. It's not like a liquid that can be accurately measured at any time.

Well... You can always drive 100% of the distance allowed by the amount of charge left in the battery. You will occasionally be able to drive, downhill, with a tailwind, in a hurricane, a bit further than the charge left in the battery.

It's sort of like my guarantee about my being wrong on things. If I'm ever wrong, I will be 100% absolutely and completely incorrect. Of that you can be sure. It will be rare that I exceed that mark though.

I started on a full charge yesterday and drove down to 13 miles. (38000 miles/14 months/86S) Suspect my battery needs rebalancing, don't believe I have lost much. My full charge was 252 (291 ideal). I suppose you could call it boredom while driving but I kept pulling up my charging screen and watched the battery drain. Its obviously a relatively crude way to view it but judging by the notches it dropped at a consistent 10 % every 25 miles all the way through. IN fact watching my energy consumption I used 7kWh per 25. Had I gone down to zero I would have used 69-70 kWh battery. I know there have been numerous threads on this before and my relative unknown is how much battery I have really lost (cannot be more than 3% based on my 291 ideal miles). However it would be interesting to know how much reserve we now have after the latest software update. I know that my range has dropped 3-5 miles since it increased after the 5.8 update and I doubt it is loss.


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