The etiquette around ev charging
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What is the main topic discussed in this episode?
The Clare Byrne Show on Newstalk. With Aviva Insurance.
Well, Done Deal Cars is reminding the public to mind their charging etiquette as growing EV numbers are putting pressure on a public charging network that is still trying to expand to meet demand. Paddy Cummin is Head of Automotive Content and Communications with Done Deal Cars and he joins me now. So, is it all kicking off down at the EV charging stations today?
We're not quite there yet, Ciara, but yeah. Look, it's heading that way. For a bit of context, we've seen a big jump in the EV sales. New EV sales are up about 50%. We've seen about 100% increase in searches for EVs, especially around the times when the fuel crisis was prevalent and also before the announcement of the scrapper scheme recently. So there's more of an interest in EVs. But the result is... We don't have a huge amount of charging spots. We have a reasonable amount, probably about 3,000 charging spots in total across the nation.
But we need how many?
Oh, we need way more than that. Well, if you consider that maybe in June, in July alone, we probably did about 6,000 new EVs already. So there was figures recently which had shown that all the ESB charging points can charge at the same time. So of about 1,600, 1,400 only can operate at the same time. So yeah, look, there's a bit of an issue happening. But I suppose what we really wanted to do at Done Deal Cars was look at the data, do some sums and also remind people, look, if you're charging to 100%, especially at the fast chargers, a couple of things. A, you're holding people up for a time that they don't really need to do, but also there's potentially you're damaging your battery a little bit.
OK, so this was the really interesting part of the research, right, is that people are not using perhaps the fast charging facilities, the public ones, the one you have to pay, you know, for a significant amount. Exactly. Doesn't come out of your monthly or bimonthly electricity bill. They're not using it as efficiently as they could. Can you explain that in more detail?
Yeah, so most fast chargers will charge your car very quickly from, say, 10% to 80%. So a typical car, best-selling one is the Volkswagen ID.4, so I'll use that as an example.
How fast are EV sales increasing and why does that matter for public chargers?
So it takes maybe 30 minutes to charge from 10% to 80%. But then from 80% to 100%, the battery management system rapidly slows that charging down to save the longevity of the battery. So in lots of cases, you will be... potentially longer at the charging point, charging from 80 to 100% than you would be from the 10 to 80%. So for some poor creature who's really anxious and waiting to get on their way and sitting behind someone waiting for the charging point, it's a little bit unfair, obviously, but also you're both paying too much for that charge because a lot of places like ESB will charge you an overstay fee beyond 40 minutes. So you can be 50 cents a minute charged. for those and then also and I don't want to alarm people but if you're looking after the longevity of your battery so how long that battery will retain its full capacity you are you are reducing that by charging at fast chargers especially up to 100% the longer you're on those fast chargers it's not necessarily getting it to 100% but the longer you're on those fast chargers that's when you will reduce the overall capacity of the battery so
So it's the heat that does that. And why does the battery at 80% sort of slow down so dramatically before it gets to that 100%?
That is that the car's battery management system is preserving its longevity. It's a safety mechanism. Yeah, because that heat... Imagine if you were opening and closing a door slowly. But if you are slamming that door all the time, eventually the hinges will start to wear off. It's a simple enough analogy. But that's the reason why the battery management system will slow that down rapidly. You won't necessarily see that if you're charging at home. So for people who have home chargers, It's it's the device is always really charged 80 percent unless you really need that range.
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Chapters
4 chapters
1
What is the main topic discussed in this episode?
0:01–2:17
2
How fast are EV sales increasing and why does that matter for public chargers?
2:17–4:58
3
How many public charging spots exist in Ireland and are they enough?
4:58–10:12
4
Why do fast chargers slow down between 80% and 100% and how does that protect batteries?
10:12–10:21
Speakers
3 identifiedMore from The Claire Byrne Show
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