Bi directional charging on 77kW models

[Smitten]

There are several interesting snippets of information in here about WE Charge, Bi directional charging etc

https://www.volkswagen-newsroom.com/en/ ... odels-7695

[Utumno]

Interesting, the article appears to state that 77kWh models already have the bidirectional hardware necessary installed in the car, including all 77kWh models already shipped. I wasn’t aware this was the case.

[monkeyhanger]

If we're in a position where we need to give back our car's charge at peak times then our national grid is truly screwed.

Might be useful for caravanners/campers to use some of that power out and about if they don't need the range.

[daesimpso]

Interesting timing.

Only yesterday I was talking to a colleague about a home battery system that I could charge overnight at 5p per KWh and use during the day when electricity is 24p.

I was saying it seemed weird to pay thousands for a 10KWh battery system when I have a 77 KWh one sat on the driveway for most of the time.

[Andreas]

If we're in a position where we need to give back our car's charge at peak times then our national grid is truly screwed.

Might be useful for caravanners/campers to use some of that power out and about if they don't need the range.

V2H is more relevant. Charge at night on a cheap tariff or at lunchtime from solar for free, supply the home from the car during the day/evening/morning hours.

All the best

Andreas

[monkeyhanger]

Interesting timing.

Only yesterday I was talking to a colleague about a home battery system that I could charge overnight at 5p per KWh and use during the day when electricity is 24p.

I was saying it seemed weird to pay thousands for a 10KWh battery system when I have a 77 KWh one sat on the driveway for most of the time.

You'd have to weigh up the savings vs the extra hammering of the car's battery and whether that is going to impact the car's worth. Doing this could mean the difference between charging every 3 or 4 days to doing it every night.

It's only worth doing while we have those 5p per kWh charging windows. If we all start doing this, off peak is going to become the new peak and it won'tbe 5p per kWh any more.

[Andreas]

TBH, if you do V2H, rather than V2G, which I consider to be a very weak value proposition, you could probably keep the battery from being hammered. Your daily use at home is what? 10-15kWh? So about 20% on a Tour or 30% on a Life battery. You could easily establish a healthy battery regime that keeps it fluctuating between 35 and 75% SoC. I don't think that would have a detrimental impact on it as it is all AC operation.

Point on peak shifting is valid, but you need many years of EV penetration before that becomes an issue.

All the best

Andreas

[daesimpso]

It's only worth doing while we have those 5p per kWh charging windows. If we all start doing this, off peak is going to become the new peak and it won'tbe 5p per kWh any more.

Even more reason to use the car I’ve already paid for and not fork out on a battery system. Make hay whilst the sun shines

[Utumno]

If we're in a position where we need to give back our car's charge at peak times then our national grid is truly screwed.

Might be useful for caravanners/campers to use some of that power out and about if they don't need the range.

Ah, to be clear, I consider V2G to be an utterly useless technology. It only works at scale, and by the time you’ve reached the scale to make it work, you must have already solved the problem it was trying to solve.

V2H is a much more compelling use case in my humble.

[Smitten]

If we're in a position where we need to give back our car's charge at peak times then our national grid is truly screwed.

Might be useful for caravanners/campers to use some of that power out and about if they don't need the range.

Ah, to be clear, I consider V2G to be an utterly useless technology. It only works at scale, and by the time you’ve reached the scale to make it work, you must have already solved the problem it was trying to solve.

V2H is a much more compelling use case in my humble.

It was V2H that caught my attention as we are looking at domestic battery installation right now. I find the idea of using some of the 77kW battery to save money on domestic electricity bills quite appealing as we are an all electric house with a heat pump. Imagining today, I was out this morning but I am home working in the office this afternoon so that car could easily be plugged in using 5p/kW Go electricity from last night to power the heat pump now, and then charge up again over night.

If you have V2H you won't need V2G.

[sidehaas]

Does anyone know why the functionality isn't seemingly being provided for 58kwh models?

[Utumno]

Does anyone know why the functionality isn't seemingly being provided for 58kwh models?

I can only guess that the hardware hasn’t been fitted to the 58kWh models - you typically need more complex and costly hardware in the car inverter for V2H.

[G43FAN]

Just me that finds this an odd statement " At the heart of the Way to ZERO decarbonisation programme is the "

Sounds like they are heading for Zero decarbonisation?


Any thoughts on this? "There is also a new Battery Care Mode that ensures maximum protection of the battery. This restricts the upper charge level (SOC) to 80 percent." OK.. by that I mean, my thought being, the data they have collected is not favourable towards charging over 100%?

[Utumno]

Just me that finds this an odd statement " At the heart of the Way to ZERO decarbonisation programme is the "

Sounds like they are heading for Zero decarbonisation?


Any thoughts on this? "There is also a new Battery Care Mode that ensures maximum protection of the battery. This restricts the upper charge level (SOC) to 80 percent." OK.. by that I mean, my thought being, the data they have collected is not favourable towards charging over 100%?

VW’s decarbonisation programme is called “Way to ZERO”.

How would a battery charge to over 100%?

[Splitty]

If you have a Tesla power wall and solar, Octopus offer a Tesla plan which is about £0.11 per KWh for export and import. Tesla operate the batteries and octopus administer it. Tesla warrant the battery will retain 70% capacity after 10 years. Sounds like VW want to get into the energy business as well.

[G43FAN]

Just me that finds this an odd statement " At the heart of the Way to ZERO decarbonisation programme is the "

Sounds like they are heading for Zero decarbonisation?


Any thoughts on this? "There is also a new Battery Care Mode that ensures maximum protection of the battery. This restricts the upper charge level (SOC) to 80 percent." OK.. by that I mean, my thought being, the data they have collected is not favourable towards charging over 100%?

VW’s decarbonisation programme is called “Way to ZERO”.

How would a battery charge to over 100%?

Yes I get the name is Way to Zero and as you have put it in quotes, I felt they should have also.. not everyone reading would understand it was what they're program was called.. or maybe they would?

Should have said over 80% or to 100%

[Smitten]

Just me that finds this an odd statement " At the heart of the Way to ZERO decarbonisation programme is the "

Sounds like they are heading for Zero decarbonisation?


Any thoughts on this? "There is also a new Battery Care Mode that ensures maximum protection of the battery. This restricts the upper charge level (SOC) to 80 percent." OK.. by that I mean, my thought being, the data they have collected is not favourable towards charging over 100%?

VW’s decarbonisation programme is called “Way to ZERO”.

How would a battery charge to over 100%?

Yes I get the name is Way to Zero and as you have put it in quotes, I felt they should have also.. not everyone reading would understand it was what they're program was called.. or maybe they would?

Should have said over 80% or to 100%

Possibly lost in translation from German. UK media tend to use the Economist Style Guide but perhaps German use of quotation marks is different...The did use caps to signify a name/naming

[LurgidBanana]

I am shortly taking delivery of a new 77kwh battery id3 and presumably it has the latest software. I am interested in v2l which i believe is available but I can't find a type 2 to 13 amp discharge adaptor that mentions being id3 compatible - although i have seen them advertised for MG4. Anyone have any info on this - how you practically power a load from the id3?
In my case I'm wanting to power an electric scarifier etc in a wild flower meadow beyond the reach of an extension cable. Plus maybe power 1 or 2kw heater in an office

[MotMot]

Nope. Can’t do it.

There hasn’t been and afaik won’t be an adapter to plug into the car charging port with a 3 pin adaptor on it.

It is ‘possible’ to have V2H via a special VW charger - but this (a) only seems available in Germany (b) costs several thousand euros and (c) I’ve never seen any pictures or heard of it actually existing outside of VW promotional pictures.

It’s been promised for 3 years - and never happened.

[id3_life]

AFAIK 77kWh I.D3 only supports V2H & V2G via an expensive (several thousand) DC charger that does not exist yet.
V2L is not supported. Feel free to correct me if I am wrong.