Hummer EV the champ at DCFC charging rate(s)?

[ChasingCoral]

Do all existing L3 (really DC L2) chargers support 800-volts? I'm assuming not, so how many are out there?

It's my understanding that the newest 350 kW units do but I'm really not sure. Articles I've read on the subject start mixing up voltage and charging rates. However, this article suggests that the answer may be yes even for many older units, depending on how they are configured:
https://electricrevs.com/2018/04/10/how-does-800v-charging-work/

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[abr]

With all that electricity consumption, I hope the power is coming from clean sources or it's the same environmental hog as the original.

 

[ChasingCoral]

With all that electricity consumption, I hope the power is coming from clean sources or it's the same environmental hog as the original.

It comes with an optional coal burning range extender.

 

[GoGoGadgetMachE]

Do all existing L3 (really DC L2) chargers support 800-volts? I'm assuming not, so how many are out there?

GM has a thing going with evGO which I believe will cover this even if there's others that aren't: GM And EVGo Team Up To Deploy 2,700 New DC Fast Chargers (forbes.com)

 

[trutolife27]

Oh yes, the F-series heavy-duty trucks are high. Ford can't make them quick enough. The demand for them is insane. The ford truck 90% of people use it for work. The hummer is not what it's for.

 

[DBC]

Do all existing L3 (really DC L2) chargers support 800-volts? I'm assuming not, so how many are out there?

It's more where they are located than the absolute number. Don't know about other service providers, but Electrify America, which is the one that counts in this regard, supports 350 kW at all the stations designed for trip use. The ones in metro areas are 150 kW. IOW chargers around LA would be 150 kW and those between LA and Vegas would be 350 kW.

 

[DBC]

It's my understanding that the newest 350 kW units do but I'm really not sure.

The current J1772 standard sets a maximum of 400A at 1000V, so all DC chargers rated for 350 kW support 800V.

Not sure how Porsche is able to handle more than 400V but I read that on the Hummer GM is changing the parallel/series configuration of the cells during charging so they can handle the higher voltage.

 

[trutolife27]

Again I agree. But like videos on youtube already show. Your this thing cruising up and down Hollywood boulevard before doing farm work. More of a niche. If these ev prices don't start coming down then no way they are going to push Ice vehicles out as quick as they think.

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