Range slowly disappearing

[65SoYoLO]

My range is disappearing. At 80% I used to have 254 miles. Now I am only getting 241. Trying to post a video of my phone showing 80% and 241 but that ain't workin'.
Has anyone checked the range at 80% I just turned 43,000 miles.

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[CyberGus]

It's normal and expected for the rated capacity to fluctuate, and to decrease over time.

My charted capacity took a big positive jump after I took a road trip, because I ran it down to almost empty and then charged to 100%. This didn't change the cells, but rather provided better data for the computer to calculate the estimate. (EDIT: I normally charge to 50% for daily use)

Overall, the kWh capacity will go down over time, it is unavoidable.

 

[NX-01Cybertruck]

Try taking the battery down to 10% and charge back up. It might change your est range.

 

[65SoYoLO]

But what is considered a failing battery? 254 to 241 is quite a bit of range. It was 243 a month or two ago.

Overall, the kWh capacity will go down over time, it is unavoidable.

 

[HaulingAss]

But what is considered a failing battery? 254 to 241 is quite a bit of range. It was 243 a month or two ago.

If you are short-cycling the battery (meaning not having recently depleted it to 10% or charged it to 90%), then the battery calibration can drift over time. The Battery Monitoring System measures energy in and energy out to guestimate the state-of-charge (SOC), but that guesstimate needs to be periodically recalibrated at very low and very high states of charge for it to be accurate after an extended period with the battery in the middle of the range. It will recalibrate automatically whenever the battery is run down to a low SOC and charged back up to around 90%.

Historically, on a Tesla, losing 6% range in the first year or two would be considered normal (loss of total battery capacity tends to be greatest in the first year or two and then slows to a crawl over the next decade or more).

That said, my Cybertruck has had the least initial battery degradation of any of our previous 4 Tesla. In fact, after 17 months of being parked outside 24/7, the Cybertruck is still reporting ZERO battery degradation. And, yes, I periodically cycle the SOC so I trust that my Cybertruck's battery calibration is accurate.

 

[CyberGus]

But what is considered a failing battery? 254 to 241 is quite a bit of range. It was 243 a month or two ago.

The battery measurements are not precise.

The pack will be replaced under warranty if degradation reduces pack capacity below 70%.

 

[gooshjkc]

I have slightly over 18K miles and just noticed a reduction in range. When I first got it, it was showing at 100% 302 miles. Now, it’s showing 298. I’m not worried YET. Yeah, I know there’s a battery warranty, but we are talking about a reduction to 215 miles on a full charge. Am I going to wait till it gets that low?

 

[EMoeller]

As others have stated all batteries lose charge over time. Tesla has some of the best batteries in the biz and are improving them all the time. This article highlights that future batteries will use a nickel component that will allow a 90% recommended charge instead of 80%..

https://www.notateslaapp.com/news/3...l-increase-longevity-and-allow-charging-to-90

For those interested in how much a new battery for a Cybertruck is I asked for tax purposes and it is $31k (without installation).

 

[CTCotopaxi]

I noticed lost 10 miles of range after last update

 

[eser50]

I'm almost at 12K miles and only down 4 miles from when new at 100%
I had 4 months free supercharging, so most of my charging was done that way for the first 4 months of the truck's life.

 

[CyberGus]

we are talking about a reduction to 215 miles on a full charge. Am I going to wait till it gets that low?

It will never get that low, even at 200,000+ miles. If pack capacity is below 70%, it has already failed.

 

[dakota]

I lost 4. Less than 2,000 miles on truck.

I noticed lost 10 miles of range after last update

 

[henchman24]

That would be about 5% degradation and at 43k mi that would fit within the norm. The degradation is the heaviest early in the vehicle life. 5% wouldn't be super abnormal at 10-15k miles. It levels off though and really you should only lose 5-10% more over the next ~100k. The tricky part here is that this chemistry and form factor of battery is unknown. Early returns are that it is quite a durable battery and actually has less degradation than the 2170s (especially 21+ 3/Y), but we are still very early.

 

[JimBuck333]

We completely a 3000 mile trip recently, with some overnight charges to 100%. It definitely seems to have improved the mileage calibration, as the range I checked a minute ago at 25% said 83 miles, or 332 implied at 100% (Foundation AWD A.S. tires.) Better than before the trip.

 

[65SoYoLO]

That would be about 5% degradation and at 43k mi that would fit within the norm. The degradation is the heaviest early in the vehicle life. 5% wouldn't be super abnormal at 10-15k miles. It levels off though and really you should only lose 5-10% more over the next ~100k. The tricky part here is that this chemistry and form factor of battery is unknown. Early returns are that it is quite a durable battery and actually has less degradation than the 2170s (especially 21+ 3/Y), but we are still very early.

Good to hear. Thanks for that info

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