### Re: Nissan Ariya to be announced for the JDM July 15, 2020

Posted:

**Wed Jun 09, 2021 8:44 am**Ignoring that one starts at 5% "SoC" and the other 10% "SoC" ***, 22.5/18 = 25% longer charging time for the Porsche.knightmb wrote: ↑Tue Jun 08, 2021 7:28 pmPorsche says its Taycan can be charged from 5% to 80% percent in exactly 22.5 minutes.SageBrush wrote: ↑Tue Jun 08, 2021 5:44 pmBoth Porsche and Hyundai have 800v architectures, they use the same cells, and you don't think Hyundai has a physics defying superior engineering that no other EV company has come up with.

So what is left to explain Hyundai "beating" Porsche handily at the charging speed game ?

Hyundai said that it can charge the Ioniq 5 from 10% to 80% in just 18 minutes.

So Porsche, 3.33% charge per minute,

Then Hyundai gets 3.89% charge per minute.

That's close enough to be a rounding error between the two. Both using 800V systems, don't know the exact battery capacity of both. I wouldn't call either of them beating the other since just a few seconds delay between plugging them both in to charge could make one or other other win.

That is not a rounding error. And remember, the Porsche already shifts the charging curve ~ 10 kWh to the left** at nominal full due to the unused capacity.

** IIRC the specs, 93 kWh nominal and 83 kWh usable. The "80% SoC" of the Porsche would be 83*0.8 = 66.4 kWh in the battery, so 66.4/93 =

**71% nominal SoC**. Addendum: Bjorn Nyland has a nice Audi GT (800v system, big buffer) charging session that shows the car at 160 kW when the "SoC" is 70% and 90 kW when the "SoC" is 80%. That taper shift makes for headline news but it is smoke and mirrors.

*** 5% SoC is ~ 4 kWh, so about a 60 - 90 seconds of charging time