Electric car anyone?
76 watchers
6 Feb
3:25pm, 6 Feb 2025
51,913 posts
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HappyG(rrr)
Wo der why cars are not being supplied with granny cable nowadays? That's a pain larks. It's annoying that a £1000 device/service has no better warranty. I suppose I'd be loathe to pay £100 plus per year for some kind of extended warranty though. Will an independent installer not offer to look at it with a view to repair for a call out fee? Interested, in case ours ever dies!  G
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6 Feb
3:26pm, 6 Feb 2025
26,577 posts
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larkim
All true, weekends we have other use of the car which is less predictable! Could be a lot more than 45 miles per day, or a lot less. I'll see if there is a setting where I can adjust the rate on my granny charger. It came with the car though so probably not too sophisticated. |
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6 Feb
3:29pm, 6 Feb 2025
26,578 posts
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larkim
HappyG(rrr) wrote: Wo der why cars are not being supplied with granny cable nowadays? That's a pain larks. It's annoying that a £1000 device/service has no better warranty. I suppose I'd be loathe to pay £100 plus per year for some kind of extended warranty though. Will an independent installer not offer to look at it with a view to repair for a call out fee? Interested, in case ours ever dies! G Not explored a local sparky just yet; but just mildly concerned that there is some "software" side to the device which isn't publicly available (e.g. installer password / account) which might mean that a local electrician can address any physical issues like a blown fuse or similar, but something more "electronic" might be impossible for them to solve. It feels like a software problem at the moment, but that could be software evidencing a hardware fault. |
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6 Feb
3:32pm, 6 Feb 2025
51,914 posts
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HappyG(rrr)
larkim wrote: HappyG(rrr) wrote:Wo der why cars are not being supplied with granny cable nowadays? That's a pain larks. It's annoying that a £1000 device/service has no better warranty. I suppose I'd be loathe to pay £100 plus per year for some kind of extended warranty though. Will an independent installer not offer to look at it with a view to repair for a call out fee? Interested, in case ours ever dies! G Not explored a local sparky just yet; but just mildly concerned that there is some "software" side to the device which isn't publicly available (e.g. installer password / account) which might mean that a local electrician can address any physical issues like a blown fuse or similar, but something more "electronic" might be impossible for them to solve. It feels like a software problem at the moment, but that could be software evidencing a hardware fault. If it's software, can't they remote on amd look at it? My EO charger still gets checked by EO if I have a question and that's coming up for 3 years since installed. G
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6 Feb
3:41pm, 6 Feb 2025
26,579 posts
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larkim
It's peculiar. The device boots, gets an IP address and I can see the login page for it (both locally and remotely through port-forwarding on my router). But the way it responds to a user or admin account being logged in feels "wrong". It's not rejecting "wrong password" but neither is it logging in. It's almost as if the webpage bit is booting, but the software to handle authentication etc isn't. They've supplied me with the installer password, but trying that remotely doesn't work. I am going to give it a try locally tonight and see if I get a different result. Their argument would be that trying to get it going from their end would effectively be warranty support; which they don't want to supply. Slightly annoying that I have a device on my network that I don't have complete access to, but I suppose that's not entirely unusual. I probably have a fair few smart devices that I can access some of, but not all of. |
6 Feb
4:23pm, 6 Feb 2025
18,437 posts
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jda
You should try switching it off and on again
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7 Feb
4:15pm, 7 Feb 2025
26,584 posts
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larkim
Looks like Motability are coming good - an Ohme charger is in the process of being surveyed etc. Still fancy a little bit of prodding under the surface over the weekend to see if I can spark this one to life. Annoyingly both last night and tonight will need to add another 36 miles to the usage so charge level is dropping. Might just bite the bullet and leave the granny connected all day tomorrow and get back to a full battery.
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7 Feb
4:25pm, 7 Feb 2025
22,638 posts
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Chrisull
Ok - slightly offtopic but the batteries charging only up to 80% applies to other batteries as well, such as phone abtteries. You are meant to leave any batteries between 20-80%, below 20% or over 80% apparently stresses them, (although mainly if you leave it at 100 too long.) In fact there is now a setting to prevent charging beyond 80 on the iphone: appleinsider.com Does seem to apply EV batteries still: bppulse.co.uk But I'm struggling to find a hard science article as to why, so if someone wants to actively contradict the above, I'm not going to argue. |
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7 Feb
4:57pm, 7 Feb 2025
51,920 posts
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HappyG(rrr)
I still think for both of those it's about rapid charging (the chemistry explanation that jda gave up there somewhere) and if you are trickle charging the last 80% then no harm no foul. In my understanding. G
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7 Feb
8:00pm, 7 Feb 2025
26,585 posts
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larkim
MG provides two different battery types for the EVs. A NMC Lithium Ion one and a LFP (lithium iron phosphate). With the NMC cars, the software in the car allows for a lower charge maximum to be controlled by the owner (e.g. to set an 80% max). But the LFP powered cars don't; because LFP batteries are more stable there is no need to avoid the 100% charge. Or at least that is my understanding. I think the difficulty in understanding this clearly is that car manufacturers are by definition pretty cautious in many ways. So batteries are designed with significant (invisible) buffers. 100% reported to me on the dash is not 100% of the battery's capacity; I have in my head a figure of 61.4kWh when the battery is a theoretical 64kWh one. Added to that the BMS does "balancing" processes to maintain things effectively. Ultimately 100% is not really 100% in current gen EVs. I *think* I'm right in saying that original gen Tesla's and other EVs didn't create buffers so 100% was really 100%. |
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