ESB eCars

The problem with that is it's based on too many variables (personal fuel consumption vs rated, different makes, models, weather etc)
kW is standard for a reason.

(charging full whack at a 50kW charger for me is about 220 km/h)

innrain

For me the best way to express the charging speed is in km/h. To do that you need to know your average consumption rate. In my case with a Kona after nearly 30k km it stands at 15.5 kwh/100km so 45 - 47 kW is around 300km/h . That is for day to day driving. If I know I'm going to do a full motorway run where the consumption will peak at around 18-19 kWh/100km then I can do my math. This is the reason that I rarely charge at a fast over 75% where charging speed drops at 25kW or 160km/h. That is time wasted.

For M3 probably is not much difference on the consumption rate. The difference is that the charging at 50kw tapers after 85%

AndyBoBandy wrote: »

I stopped at 60% (SR+), so perhaps if I'd waited a bit I might have seen the full 50?

I dont think you'd see a full 50 in the car as the net amount is displayed. I find in my S that the 50kW charger displays 51kW between ~60% and ~75%, but it shows as 45-46-47kW in the car

I stopped at 60% (SR+), so perhaps if I'd waited a bit I might have seen the full 50?

AndyBoBandy wrote: »

Plugshare says its a 50kWh unit (as I believe some are only 44kWh?).
Maxol, Turvey Services (M1)

It pretty much levelled out at 42kWh, and I didn't see higher..
Could it have been because I was at 36%? and perhaps an initial lower SOC might have given a faster rate?

No, you generally get the highest rate at a 50kW/44kW charger between 60 and 75-80% in a tesla due to the different taper.

It's the lower voltage from the car and the less amps available (max 125a) from the charger. For comparison, if you plugged in to Ionity, you could draw 190kW at 500a (LR/P) or approx 425a (SR+)

Plugshare says its a 50kWh unit (as I believe some are only 44kWh?).
Maxol, Turvey Services (M1)

It pretty much levelled out at 42kWh, and I didn't see higher..
Could it have been because I was at 36%? and perhaps an initial lower SOC might have given a faster rate?

slave1 wrote: »

I get constant 43kWh on a Leaf almost from the word go, thought the M3 would suck at the max 50?

The voltage is a bit lower afair

The 250kW peak is due to super high (666a) amperage, the voltage is 350V

I get constant 43kWh on a Leaf almost from the word go, thought the M3 would suck at the max 50?

Tried using an eCars DC 'fast' CCS charger yesterday for the first time. Not through necessity, but rather curiosity and learning.

Arrived at 36% SOC, and charged up to 60% in about 17 minutes, getting speeds of 41-42kWh (only car on the stall). Not exactly earth shattering speeds, but not snails pace either.

I wouldn't fancy having to go from 20% up to 80% on a motorway journey, so these new 150kWh units on certain routes will be more than welcome to complement the Ionity/SuC network. They should definitely be installed in addition though to what's already there (if grid connection allows for it) as opposed to replacing, as if you had to wait 10-15 minutes for the 150kWh to become free, you could be plugging away on a slower DC, or even on AC thus reducing the overall time needed on the 150kWh.

In an ideal eCars world, you could have (in a motorway services) 1 or 2* of the 150kWh 'super fasts', 2 or 4* of the slower DC 44/50kWh, and then perhaps 2-4* AC22kWh for the folk who'll stop for longer than an hour, or for Zoe's/Model S that can take the full 22kWh if the DC's are unavailable.

*1 or 2 & 2 or 4 depending on how busy the particular route is.

And if they put in fewer units initially, still do the groundwork/wiring for more/bigger units down the road so when it comes to it, it's simply plug & play more units into the set up.

innrain wrote:

Yes. They do. Rolec has one produced by delta the same company behind the ecars ultrafast. Look up DC25kW wallbox. About 10k vs 1k for 22kW AC

Yeah, I know 2x22 kW AC can be had relatively much cheaper than 50 kW DC.

So I'm pretty sure 22 kW DC won't be cheap...

Maybe that's the real reason why all Tescos etc do AC?

And maybe reliability? Doesn't have the DC extra inverter or something?

innrain

Yes. They do. Rolec has one produced by delta the same company behind the ecars ultrafast. Look up DC25kW wallbox. About 10k vs 1k for 22kW AC

unkel wrote:

In a country like the Netherlands, there are fast chargers everywhere. Nobody needs home or work charging to own an EV. Just like nobody fills up with petrol or diesel at home or at work

Except for the fact that NL have 850k EVs on an area of Leinster+Munster. Very good high density market.

RoI has 25k EVs on almost double the area. Generally low population density and no large population centres bar Dublin and perhaps Cork as well, it's hard to maintain any sort of infrastructure in Ireland.

Catch 22 situation. Privately owned charging network is profitable when there is enough EVs, enough EVs need a sufficient network.
We'll get there, I hope. The gov need to focus on supporting the uptake - carrot and stick required for that.

ELM327 wrote:

If you want 2*22kW then install 2*22kW DC IMO

That would be a good compromise. Do they exist?

JohnC. wrote:

You'll probably spend more time deciding which biscuits to buy in the shop that you will spend "faffing" plugging in the cable.

DrPhilG

ELM327 wrote: »

I'm pretty sure "Anna" said it but I can't find the post either.

Which Anna though? I can only assume that everyone who works for eCars is called Anna.

And eCars NI which according to eCars is an entirely separate entity, is also staffed exclusively by Annas.

I'm pretty sure "Anna" said it but I can't find the post either.

Black_Knight

ELM327 wrote: »

It's 2021 they confirmed in a FB post a while back, originally meant to be this year but postponed due to covid

Didn't see that. Last I seen ievoa said because of covid it was postponed by some months, and a months notice will be given when prices are to be introduced. Never heard anything about 2021.

It's 2021 they confirmed in a FB post a while back, originally meant to be this year but postponed due to covid

Black_Knight wrote: »

I've hear pricing for AC is coming in next month. Similar (but cheaper) price per kWh as DC. What will the freeloaders do now?

Did they not defer it til next year?

Black_Knight wrote: »

I've hear pricing for AC is coming in next month. Similar (but cheaper) price per kWh as DC. What will the freeloaders do now?

Pricing, but not being implemented until next year....

AC Network
The AC network is currently being upgraded and continues to be free to use while these upgrades are taking place. Pricing will be introduced for the AC network in 2020. Please check our website and social media channels for updates.

Black_Knight

I've hear pricing for AC is coming in next month. Similar (but cheaper) price per kWh as DC. What will the freeloaders do now?

liamog wrote: »

I don't think we need any serious move to domestic 3 phase power. We have 9 hours of night rate electricity, that's 66.2kWh of available power to your car per night from a 32A charger.

It was a general comment as a comparative to a country where 3phase is more the normality.
Remember with 3 phase we would not need load balancing or any extra boxes to ensure we don't blow the house fuse.

66.2kWh in a few years to charge two EVs, let's see how that will turn out.

That would not allow me to charge our two EVs right now if we were both out and about the following day and required full charges, this is setting aside the cut out/lower rate making it's way to the EVs when the electric shower cuts in....

unkel wrote: »

And 66.2kWh even in a "gas" guzzler EV using 20kWh/100km is enough for 331km per day, or over 120k km per year. Who does more than that?

my average consumption is 230wh/km over the 22k km I did so far.

When on only motorway that tends towards 250wh/km.

I do 120km commute on the weekdays and tend to have committed 2*160-180km round trips at the weekend (the joys of blended families).

I was finding that, at 7kW, starting at midnight and needing to leave for work at 7am wasnt giving enough power for the longer trip days (ie if I had another trip in addition to 120km return to work) 7hrs * 7kW = 49kWh minus 6kWh on heat in the winter is 43kWh. At 250wh/km that doesnt even give 200km.

liamog wrote: »

I don't think we need any serious move to domestic 3 phase power. We have 9 hours of night rate electricity, that's 66.2kWh of available power to your car per night from a 32A charger.

When we move house next year I'll be getting 3 phase installed.
I intend to max out on solar and storage, sink the costs and be off grid during the day. Need a 22kW inverter at night to do that and charge the car.

unkel

And 66.2kWh even in a "gas" guzzler EV using 20kWh/100km is enough for 331km per day, or over 120k km per year. Who does more than that?

liamog

slave1 wrote: »

Have to disagree with some of that, I think if we were a 3phase country (like Germany?) then we could have serious home charging and along with cars with increased range then we would all be charging at home/at night when industrial/commercial and residential demand is low.

I don't think we need any serious move to domestic 3 phase power. We have 9 hours of night rate electricity, that's 66.2kWh of available power to your car per night from a 32A charger.

Black_Knight wrote: »

Seems overkill to me. I'd be reasonably happy with a 3 pin socket at my work (granted i've a short commute and an efficient car), but 22kW charge points seems excessive. Battery size isn't going to keep growing like it has in recent years, as the need for extra range (already have cars doing 400km+) and the cost of adding those extra kms and the additional weight it would add limit the battery capacity. Perhaps having 1 would be useful for visitors, but for staff, it's free charging. Beggars can't be choosers.

That was my point. I actually asked for the 22kW units to be switched down to 7kW and install more 7kW using the same power.

Myself and another tesla owner were charging at a combined 33kW, while the other posts were also in use so the power is there.

Instead, what did we get, one more 22kW dual post! Silly! I'd have been happy with a couple of 7kW, one 22kW for visitors and a rake of 16a blue plugs and locked 3pin sockets.

unkel wrote: »

In a country like the Netherlands, there are fast chargers everywhere. Nobody needs home or work charging to own an EV. Just like nobody fills up with petrol or diesel at home or at work

Have to disagree with some of that, I think if we were a 3phase country (like Germany?) then we could have serious home charging and along with cars with increased range then we would all be charging at home/at night when industrial/commercial and residential demand is low.

As you know we can't store our electricity in Ireland (reservoirs being the exception) and as you also know we tend to have a higher percentage of "green" electricity at night.

Putting these together I think we are better off with greener home charging at night versus more pollutive rapid charging during the day....