Charging rate appears to be below 1C

[cybercricket]

This may have been discussed before, but did a longer trip in the last few days and had many opportunities to observe. Basically you pull up to a 350kW Supercharger with say 15% SoC. It pushes ~300kW until you get to say ~30%, then 200kW until ~50%, then 150kW until ~60%... above 60% it's consistently below 120kW and effectively means to get a full charge (if you wanted one) you need more than ONE HOUR (!!!!). That doesn't seem like a breakthrough in charging at all.

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[UberNoob]

Trips is best to stay at the bottom side of the battery, takes 30 mins 0-80% and another 30 for 80-100. If getting to your destination timely, let the nav take you, I do however give it a few extra % for a buffer in case I stop to pee or a detour I’ll still have enough to make it.

 

[cybercricket]

What I've seen is more like 1hr+ for 15-100%. Sure, it may be fairly quick for the first top off at the bottom, but the navigation wants you to make many such stops to keep it going, and doing a stop is time too... bottom line, I don't see an impressive achievement there - CT charges very slowly overall which significantly increases travel time.

 

[Jabman]

This may have been discussed before, but did a longer trip in the last few days and had many opportunities to observe. Basically you pull up to a 350kW Supercharger with say 15% SoC. It pushes ~300kW until you get to say ~30%, then 200kW until ~50%, then 150kW until ~60%... above 60% it's consistently below 120kW and effectively means to get a full charge (if you wanted one) you need more than ONE HOUR (!!!!). That doesn't seem like a breakthrough in charging at all.

Funny you mention this. Since I am one of many victims of the PCS failure (my second one actually), I now spend a LOT of time at superchargers. I too notice at the local SC station, which is rated for 250kw, I only get around 225-245 for the first 10-25%, then it throttles to around 175kw from 26-50% and as you said, at max it’s been 115kw after 60%. Takes me 40min from 25% to 80%.

 

[REM]

What I've seen is more like 1hr+ for 15-100%. Sure, it may be fairly quick for the first top off at the bottom, but the navigation wants you to make many such stops to keep it going, and doing a stop is time too... bottom line, I don't see an impressive achievement there - CT charges very slowly overall which significantly increases travel time.

No. My last trip had me charging twice, both 15 minutes each. For 700 miles.

Your nav will keep you trip optimized, you just aren't allowing it to. You think maybe your battery health is important too?

 

[CyberT]

Try disabling "Make Fewer Stops" in the navigation.

Here is a quote from Elon when talking to Joe Rogan, that will help visualize why charging is quicker in the lower half of the battery.

The more you charge, the longer it takes
“For a gasoline car, you would fill it up,” Musk said during a recent episode of “The Joe Rogan Experience” podcast. “For a battery, the charge state tapers off as you get above 80%.”

“I think the right analogy here is cars in a parking lot,” he continued. “The lithium ions are trying to find a parking space as they move across from one side of the battery to the other side.”

A battery at low charge is akin to an empty parking lot, Musk said — the ions can "zip right in there and find a spot.” But as the battery gets closer to full, it becomes more like a busy mall’s parking lot, where the available spots are scarce. In that situation, the ions "have to bounce around more" to find their places.

“Getting from 80 to 100 (percent) takes about as much time as getting from 0 to 80,” Musk told Rogan.

 

[Sephiroth]

This may have been discussed before, but did a longer trip in the last few days and had many opportunities to observe. Basically you pull up to a 350kW Supercharger with say 15% SoC. It pushes ~300kW until you get to say ~30%, then 200kW until ~50%, then 150kW until ~60%... above 60% it's consistently below 120kW and effectively means to get a full charge (if you wanted one) you need more than ONE HOUR (!!!!). That doesn't seem like a breakthrough in charging at all.

Yes this truck is not particularly adept at fast charging, and arguably none of the Teslas for sale now are. It is clearly not a priority for Tesla.

On the flip side, Cybertruck may have a better battery degradation rate than the other Teslas.

 

[Cyberkingz]

Yes this truck is not particularly adept at fast charging, and arguably none of the Teslas for sale now are. It is clearly not a priority for Tesla.

On the flip side, Cybertruck may have a better battery degradation rate than the other Teslas.

Bingo. The last thing i want for my CT is dendrite growth because i wanted to save 5-10 minutes at a supercharger. Competitors tout charging speeds as a benefit over Teslas without mentioning degradation. Charge curves are insanely easy to change, if there were good reasons to they would change it. Thank them later.

 

[CyberGus]

too notice at the local SC station, which is rated for 250kw, I only get around 225-245 for the first 10-25%

Are you pre-conditioning? When I took a road trip, I was seeing over 400kW at V4 stations, albeit briefly.

The taper is expected, and is necessary for pack health. An aggressive charge curve could cut your charge time in half, but would reduce useful cycles from 2000 down to 200.

Tesla can and has modified the charge curve to be more aggressive if the fleet data indicates it is safe.

 

[CyberSav]

Your findings are correct. Cybertruck is not a quick charging vehicle, none of the Teslas are. There are many vehicles out there with lower PEAK charge rates that charge faster than Teslas because they have a much better charge curve. The original Mercedes EQS only charged at 200kw PEAK but still achieved 10-80% in 31 minutes.

Tesla's charging is far behind the times. There are now many vehicles out there with peak charge speeds that WELL exceed Tesla's and actually have great charge curves.

It will only get worse from here with the likes of BMW, Porsche, Mercedes etc and all their recent offerings.

New low-end Mercedes and BMW models (CLA, iX3) charge around 400kw. Mercedes has the new AMG GT 4-Door which charges in the 600kw range. Porsche has the new Cayenne which is also around 400kw.

Mercedes AMG GT can charge from 10-80% in 11 minutes.
Cayenne EV can charge from 10-80% in 16 minutes.
CLA EV can charge from 10-80% in 22 minutes.
BMW iX3 can charge from 10-80% in 21 minutes.

Cybertruck 10-80%? 35-40 minutes.
Model Y 10-80%? 30-36 minutes.

 

[Cyberkingz]

Your findings are correct. Cybertruck is not a quick charging vehicle, none of the Teslas are. There are many vehicles out there with lower PEAK charge rates that charge faster than Teslas because they have a much better charge curve. The original Mercedes EQS only charged at 200kw PEAK but still achieved 10-80% in 31 minutes.

Tesla's charging is far behind the times. There are now many vehicles out there with peak charge speeds that WELL exceed Tesla's and actually have great charge curves.

It will only get worse from here with the likes of BMW, Porsche, Mercedes etc and all their recent offerings.

New low-end Mercedes and BMW models (CLA, iX3) charge around 400kw. Mercedes has the new AMG GT 4-Door which charges in the 600kw range. Porsche has the new Cayenne which is also around 400kw.

Mercedes AMG GT can charge from 10-80% in 11 minutes.
Cayenne EV can charge from 10-80% in 16 minutes.
CLA EV can charge from 10-80% in 22 minutes.
BMW iX3 can charge from 10-80% in 21 minutes.

Cybertruck 10-80%? 35-40 minutes.
Model Y 10-80%? 30-36 minutes.

A more stressful charge curve does not make it better.

 

[Outdoors]

Tesla can and has modified the charge curve to be more aggressive if the fleet data indicates it is safe.

Tesla has modified the charge curve many times on cars in the past history. I look at other manufacturers and question their aggressive charge strategies in their marketing materials and they do seem to hold those high charge rates. However we don't know really long-term battery health like we do with Tesla with those other manufacturers.

My 100d charges at a higher peak rate albeit for a short period of time due to the age of the pack than it did when I bought it and it has 300,000+ mi on it.

Bottom line is Tesla is going to do The best thing for the pack for long-term health.

I will say that if you do the splash and dash method, like many people have mentioned using the lower part of the pack, you'll still beat by a wide margin people that fill the pack up fully on overall time.

In a 24-hour period one should be able to travel approximately 1250 mi in the Cyber truck. That's pretty good in my book.

I have used the splash and dash method to do several north south runs across the United States and I can easily drive to let's say Michigan to lower parts of Florida just as fast as a gas car with a single driver.

 

[CyberSav]

A more stressful charge curve does not make it better.

Imagine convincing yourself that thermal throttling to 100kW is a feature rather than outdated tech. Calling superior engineering 'stressful' to excuse a 40-minute charge time is an elite level of coping. It’s wild to watch people argue that charging slower is a premium benefit.

 

[Cyberkingz]

Imagine convincing yourself that thermal throttling to 100kW is a feature rather than outdated tech. Calling superior engineering 'stressful' to excuse a 40-minute charge time is an elite level of coping. It’s wild to watch people argue that charging slower is a premium benefit.

oof you've watched a few too many Out of Spec videos lol

 

[no%X#XMVk65v#cq]

I'm one of those people that doesn't like to let the old gas gauge go much below half.

Learning to trust the nav system and basically always drive on the bottom half of the battery took some adjustment for sure, but it's the only way to go. You just have to change your mindset. You do not want to "fill up."

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