Real charging info (charging curve rate) spotted while 718 EV recharging?

[SoccerMan94043]

 

[refazi]

That looks pretty terrible, i guess it has a small pack?

 

[chun]

It started charging at around 40-50%, and charged until 89%; with a peak charging speed of 162kw and it stayed consistently above 150kw until 85%

That is already a bad scenario for charging and EV, as the Battery won’t be able to achieve peak charging speed by starting at 50%, likely with no preconditioning.

So I wouldn’t speculate too much.

The fact that it can maintain 150 until 85% is indication that the peak is quite a bit higher - I wouldn’t expect worse than j1.1 taycan; likely matching j1.2.

Overall still a bit disappointing, as Chinese cars available in Europe can already deliver 450kw peaks and 200kw at 80%.

Let’s hope an ideal charging scenario (10-85%) would lead to a higher peak and a better curve up to 85%.

EDIT: just noticed that the video is 3 years old, so this is likely the bankrupt northvolt battery.
So even less reason to speculate too much about the numbers.

 

[chun]

That looks pretty terrible, i guess it has a small pack?

It delivered 39.39 kw from 40-50% to 89%.

So we can speculate that 39.39kw is 40 to 50% of the battery capacity. So the full battery would be 80-90kw (around the size of j1.1 taycan)

We don’t know if they will offer 2 battery sizes, but I think it’s unlikely

EDIT: just noticed that the video is 3 years old, so this is likely the bankrupt northvolt battery.
So even less reason to speculate too much about the numbers.

 

[DerekS]

That curve is very disappointing.

 

[whitex]

Whoever took the screen pictures never heard of landscape orientation, or maybe they just didn’t want to look “old” when taking the pictures

 

[Dabz]

If the video is already 3 years old and we're about a year away form release, let's hope they aren't launching with such old battery technology.

 

[chun]

If the video is already 3 years old and we're about a year away form release, let's hope they aren't launching with such old battery technology.

They aren't launching with the battery from the video for sure, as that battery doesn't exist anymore. The company making it went bankrupt and porsche changed supplier more than a year ago - the whole reason this car has been delayed so much.

 

[Omegaman]

Hoping for 800 Volt architecture and maximum DC fast charging rate of 270 kW (min.).

 

[chun]

Hoping for 800 Volt architecture and maximum DC fast charging rate of 270 kW (min.).

It for sure will be 800V, if not higher, arhitecture; as that means less weight.

800V -> 250A
Lower current lets you use smaller copper conductors and reduces I2RI^2R losses. That is why 800 V systems can use lighter HV cabling, busbars, contactors, and sometimes smaller cooling hardware than equivalent 400 V systems.

And they will for sure want to save as much weight as possible on this car.

Depending on how high they want to push the performance of the car and the charging speed, going beyond 800V to 1200V may make sense, but beyond ~800 V you're increasingly trading copper mass against insulation, switching-device, connector, and safety-system requirements. They could also do what many chinese do, and go for a 900V system - but we've already seen them push very high performance figures on the Cayenne, with 800V.

 

[Omegaman]

but beyond ~800 V you're increasingly trading copper mass against insulation, switching-device, connector, and safety-system requirements. They could also do what many chinese do, and go for a 900V system

Correct. Beyond 800V switching contactors are main limiting factor, along with safety. With the 718 EV, I think Porsche should maximize the charging rate, assuming the vehicle has a small(ish) battery capacity. If more frequent charging is required due to the smaller pack size and reduced range, at least they could remove the friction point of slow charging. What are your thoughts?