CT charging

[mongo]

Not always. If the Supercharger you are navigating to is far enough away, and it's not too frigid outside, it will use natural waste heat (vs. lossy heating) to slowly warm the battery. This is more efficient which is why it's important on trips to aways have a long-distance route entered in the navigation.

For the same reason it's a good idea to charge before reaching your destination (or at your destination with Level II) rather than planning to charge first thing in the morning.

Well sure, but we're talking about Supercharging in their home town with a cold pack.

Won't pack heating from inverter and computer waste heat occur regardless of destination setting?

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[DoberManPin-Sure]

Yeah, don't Supercharge in your hometown, especially in cold weather. Always navigate to a Supercharger at least 60 miles away, and preferably 100 miles away. This allows the Cybertruck to recycle waste heat from the motors, motor controllers and central computer back into the battery pack. The warm coolant will gently flow around each cell, warming it to an optimal temperature for the fastest charging with minimal battery degradation.

Use Level II charging at home or work.

Does the improved charge rate offset the time associated with the additional pre-conditioning mileage? I don't live in a terribly cold enviro, so I don't face the same issues . . . or at least not to the same degree . . . but I feel like I'd personally rather park at a Tesla Supercharger at Buccees 10 miles from the house--even if at that low charge rate--and watch YouTube and buy Beaver Nuggets than do all that driving for a faster charge rate. To each their own though for sure.

I'm still relatively new to the EV scene, so perhaps there are other variables involved (e.g., battery longevity [you indeed mentioned degradation], safety, etc.).

 

[HaulingAss]

Well sure, but we're talking about Supercharging in their home town with a cold pack.

Won't pack heating from inverter and computer waste heat occur regardless of destination setting?

The high efficiency of an EV means there is a limited amount of waste heat (without the BMS using lossy mode to create more heat). If the coolant starts out at a frigid temperature, it takes an hour or more to heat the pack only with waste heat. Some of this heating will happen even if not navigating to a Supercharger but having a designated Supercharger stop in the navigation system will ensure the battery heating is optimized by the time you arrive at the Supercharger. The more miles and the longer time you allow it, the more efficient the battery heating process will be.

 

[mongo]

The high efficiency of an EV means there is a limited amount of waste heat (without the BMS using lossy mode to create more heat). If the coolant starts out at a frigid temperature, it takes an hour or more to heat the pack only with waste heat. Some of this heating will happen even if not navigating to a Supercharger but having a designated Supercharger stop in the navigation system will ensure the battery heating is optimized by the time you arrive at the Supercharger. The more miles and the longer time you allow it, the more efficient the battery heating process will be.

Yeah, but my point is the passive heating occurs without regard to nav settings. High power heat pump and stator based heating only occurs if you set a Supercharger destination.

 

[HaulingAss]

Does the improved charge rate offset the time associated with the additional pre-conditioning mileage? I don't live in a terribly cold enviro, so I don't face the same issues . . . or at least not to the same degree . . . but I feel like I'd personally rather park at a Tesla Supercharger at Buccees 10 miles from the house--even if at that low charge rate--and watch YouTube and buy Beaver Nuggets than do all that driving for a faster charge rate. To each their own though for sure.

I'm still relatively new to the EV scene, so perhaps there are other variables involved (e.g., battery longevity [you indeed mentioned degradation], safety, etc.).

I'm not suggesting driving additional miles just to heat the battery, I'm recommending selecting chargers further from your origin. I assume you have Level II charging at home? I depart home on long trips with 80%-100% SoC (State of Charge) and enter a Supercharger around 200 miles away into the Nav System. That ensures upon arrival that the charge speed will immediately ramp to the highest available. At 250 Kw Superchargers it always ramps right to 252-253 kW within a few moments.

Don't make the mistake of sticking to your old gas car habits. An EV is not an ICE car, it's a different paradigm, and requires a change in mindset for the most optimum experience. I actually prefer long-distance travel by EV.

Anything that makes your trip more efficient will reduce battery degradation (because battery life is largely determined by how much energy is cycled through it). In any case, the battery will probably last many hundreds of thousands of miles, but you will retain a higher amount of range, for more years, if the battery is not needlessly cycled.

 

[HaulingAss]

Yeah, but my point is the passive heating occurs without regard to nav settings. High power heat pump and stator based heating only occurs if you set a Supercharger destination.

It's true that passive heating is always active in cool/cold weather (whenever active heating is not active). But giving the thermal management system a longer time to heat the battery allows the active system to heat at a higher level of efficiency.

 

[DoberManPin-Sure]

I'm not suggesting driving additional miles just to heat the battery, I'm recommending selecting chargers further from your origin. I assume you have Level II charging at home? I depart home on long trips with 80%-100% SoC (State of Charge) and enter a Supercharger around 200 miles away into the Nav System. That ensures upon arrival that the charge speed will immediately ramp to the highest available. At 250 Kw Superchargers it always ramps right to 252-253 kW within a few moments.

Don't make the mistake of sticking to your old gas car habits. An EV is not an ICE car, it's a different paradigm, and requires a change in mindset for the most optimum experience. I actually prefer long-distance travel by EV.

Anything that makes your trip more efficient will reduce battery degradation (because battery life is largely determined by how much energy is cycled through it). In any case, the battery will probably last many hundreds of thousands of miles, but you will retain a higher amount of range, for more years, if the battery is not needlessly cycled.

My at-home charger was just installed yesterday in fact. To-date it was a weekend routine to drive to either the Tesla Service Center or the like-distanced Buccees for a significant charge via SuperCharger to prep for the week. Buccees was always the more likely of the two to hit that higher charge rate, albeit briefly (roughly per the charge curve someone else posted).

 

[HaulingAss]

My at-home charger was just installed yesterday in fact. To-date it was a weekend routine to drive to either the Tesla Service Center or the like-distanced Buccees for a significant charge via SuperCharger to prep for the week. Buccees was always the more likely of the two to hit that higher charge rate, albeit briefly (roughly per the charge curve someone else posted).

That makes no sense considering it is the vehicles BMS system that directs the DCFC in terms of how much voltage and amperage to supply.

 

[DoberManPin-Sure]

That makes no sense considering it is the vehicles BMS system that directs the DCFC in terms of how much voltage and amperage to

Makes sense because the TSC has older gen chargers than Buccees come to think of it.

 

[MeadowShade]

After charging on the road for years, including today, this is my experience.

Always navigate to the Supercharger. That gets the batteries ready for supercharging.

Charging at home, use slowest rate possible, even down to 5-6 amps. This keeps the battery from losing capacity. My CT just rolled over to 22,000 miles and less than 1 percent capacity lost over the past year.

Probably my most confusing observation is this. I have stopped prioritizing 250 chargers over 150 and the black one over 150 as well I can honestly say that a 250 charger does get to 250 sometimes for a brief time, there is little difference in the runout time after passing 50% or so.
Traveling again tomorrow and will try to stopwatch it.
Sort of like the tortoise and the hare!

 

[Crissa]

Charging at home, use slowest rate possible, even down to 5-6 amps. This keeps the battery from losing capacity.

There's no evidence for that that has been born out in studies. At even the highest Level 2 charging rate, a Cybertruck is charging at under 0.1 C, which is one tenth the normal charging rate of a battery... let alone the multiple C rates of DC Fast charging.

This is just not something to worry about. Charge at the rate that works for your schedule and equipment.

-Crissa

 

[HaulingAss]

After charging on the road for years, including today, this is my experience.

Always navigate to the Supercharger. That gets the batteries ready for supercharging.

Charging at home, use slowest rate possible, even down to 5-6 amps. This keeps the battery from losing capacity. My CT just rolled over to 22,000 miles and less than 1 percent capacity lost over the past year.

Probably my most confusing observation is this. I have stopped prioritizing 250 chargers over 150 and the black one over 150 as well I can honestly say that a 250 charger does get to 250 sometimes for a brief time, there is little difference in the runout time after passing 50% or so.
Traveling again tomorrow and will try to stopwatch it.
Sort of like the tortoise and the hare!

250 kW chargers are significanty faster than 150 kW chargers, as long as you have given the battery sufficient time to pre-condition,

 

[Outdoors]

After charging on the road for years, including today, this is my experience.

Always navigate to the Supercharger. That gets the batteries ready for supercharging.

Charging at home, use slowest rate possible, even down to 5-6 amps. This keeps the battery from losing capacity. My CT just rolled over to 22,000 miles and less than 1 percent capacity lost over the past year.

Probably my most confusing observation is this. I have stopped prioritizing 250 chargers over 150 and the black one over 150 as well I can honestly say that a 250 charger does get to 250 sometimes for a brief time, there is little difference in the runout time after passing 50% or so.
Traveling again tomorrow and will try to stopwatch it.
Sort of like the tortoise and the hare!

5 or 6 amps is like 1kW. How many days does it take you to charge? I come up with 80 hours.

Extrapolate your numbers to 300000 and over 40 trucks and you might have a data set. Till then you are spreading some funny stuff in the degradation. Likely isn't. 1% is a rounding error on the pack.

One can believe anything from the Internet. This is not one worth believing. As the individual likely does not charge at 5 amps.

 

[mongo]

5 or 6 amps is like 1kW. How many days does it take you to charge? I come up with 80 hours.

Extrapolate your numbers to 300000 and over 40 trucks and you might have a data set. Till then you are spreading some funny stuff in the degradation. Likely isn't. 1% is a rounding error on the pack.

One can believe anything from the Internet. This is not one worth believing. As the individual likely does not charge at 5 amps.

EPA rated efficiency is around 20kW, guess we shouldn't drive them either ?.

 

[YELMROG]

Does the improved charge rate offset the time associated with the additional pre-conditioning mileage? I don't live in a terribly cold enviro, so I don't face the same issues . . . or at least not to the same degree . . . but I feel like I'd personally rather park at a Tesla Supercharger at Buccees 10 miles from the house--even if at that low charge rate--and watch YouTube and buy Beaver Nuggets than do all that driving for a faster charge rate. To each their own though for sure.

I'm still relatively new to the EV scene, so perhaps there are other variables involved (e.g., battery longevity [you indeed mentioned degradation], safety, etc.).

If all superchargers had a Buccees we wouldnt get anywhere. Me and my CB charge best with the sliced brisket sandwich or breakfast tacos.

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