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N/A - Electic only cars - sammy1

Thought provoking letter in the Daily Mail. What happens if you are stuck in a blizzard for hours in your limited range EV. Presumably you will very quickly run out of battery for drive and heat. At least with conventional fuel that would not be the case unless you were stupid enough not to set out with a reasonable tank.

N/A - Electic only cars - craig-pd130

Already covered here: www.honestjohn.co.uk/forum/post/122690/electric-ca...v-

Depends on the range of the battery car and how much the heater draws. For example, my 225xe hybrid's battery has a capacity of 7.5KW. The electric heater isn't THAT powerful, certainly puts out less heat than a 1KW domestic fan heater. So even in my car, with its small battery, I could get some hours of heat,

Pure electric cars have much larger capacity batteries, but the heaters will be roughly the same output as on mine, so they would get heat for much longer.

Of course, someone in a conventional petrol / diesel car may only have a gallon or two left in the tank when they get stuck in a blizzard. So I think it's less to do with what type of vehicle you're driving, and more related to how much juice you have left in your tank / battery.

N/A - Electic only cars - Bolt

Thought provoking letter in the Daily Mail. What happens if you are stuck in a blizzard for hours in your limited range EV. Presumably you will very quickly run out of battery for drive and heat. At least with conventional fuel that would not be the case unless you were stupid enough not to set out with a reasonable tank.

I wouldn`t use full heat for a start to maintain temperature, rather than get hot, problem is windchill, heat is lost through glass and steel at a high rate, so your better keeping the power you have to last longer

it doesnt matter what fuel you use, that is what I would do just keep the chill off and cover up whether electric is any good for that situation I`m not sure about, but I think a petrol or diesel should last longer, as for heat generated, in modern diesels is better than the older ones and the only problem I had was windchill, above about -4 it was fine and heater was hot not warm contrary to some peoples views on diesels!

N/A - Electic only cars - pyruse

I don't understand why people think the battery would go flat quickly when heating the car (required a small amount of energy) and not go flat when zooming along the motorway (requiring lots of energy).

N/A - Electic only cars - galileo

I don't understand why people think the battery would go flat quickly when heating the car (required a small amount of energy) and not go flat when zooming along the motorway (requiring lots of energy).

The difference is that when mobile on a motorway you can stop at an MSA and plug it in. If you are stuck in snow miles from anywhere this is not an option.

N/A - Electic only cars - galileo

Duplicate post

Edited by galileo on 06/03/2018 at 18:31

N/A - Electic only cars - madf

I don't understand why people think the battery would go flat quickly when heating the car (required a small amount of energy) and not go flat when zooming along the motorway (requiring lots of energy).

Heating a car for 30 minutes may not reqire much energy but if you are only using 0.5kwatts t heat you it is signifiant if spread over 5 hours - 2.5KWH is approx 10% of current battery capacity.. And over 24 hours stuck in traffic on a snow covered motorway it's going to be most of your battery charge. .. exacerbated by the cold reducing battery output. And an electric vehicle has all sorts of failsafe devices to prevent you running battery capacity too low

N/A - Electic only cars - pd

I think the short answer is thay anyone who sets off with serious weather forecast in an electric car with 20% charge in it and no warm clothes is the same sort of idiot who sets off in a petrol car with the fuel light on, 16% charge in their mobile, 2mm summer tyres and no coat.

Norway and Sweden have far higher pure EV ownership than the UK and, in case you haven't noticed, can get a tad cold in places in the winter but I haven't seen many stories of thousands of them dying in electric cars in winter.

N/A - Electic only cars - Bolt

Norway and Sweden have far higher pure EV ownership than the UK

Good luck to them, but they probably have a better grid system and more charging points than we have, the national grid have already warned we do not have the capacity for all electric motors, not that anyones listening....

It could get interesting, power cuts while several thousand vehicles charge at once

N/A - Electic only cars - madf

Norway and Sweden have far higher pure EV ownership than the UK

Good luck to them, but they probably have a better grid system and more charging points than we have, the national grid have already warned we do not have the capacity for all electric motors, not that anyones listening....

It could get interesting, power cuts while several thousand vehicles charge at once

We had intermittent power cuts on Saturday..Happens most years - up to hours at a time... Substations and faulty mains cables installed 40 years ago..We once (about 10 years ago) had a spike to 280V on mains which destroyed radios, chargers and PIR lights - not publicised but we were reimbursed by electricity company # - IF you knew and applied..

I am sure we will not be alone - imagine the impact on fast chargers...

# we normally switch off most appliances at wall plugs.

N/A - Electic only cars - Bolt

Norway and Sweden have far higher pure EV ownership than the UK

Good luck to them, but they probably have a better grid system and more charging points than we have, the national grid have already warned we do not have the capacity for all electric motors, not that anyones listening....

It could get interesting, power cuts while several thousand vehicles charge at once

We had intermittent power cuts on Saturday..Happens most years - up to hours at a time... Substations and faulty mains cables installed 40 years ago..We once (about 10 years ago) had a spike to 280V on mains which destroyed radios, chargers and PIR lights - not publicised but we were reimbursed by electricity company # - IF you knew and applied..

I am sure we will not be alone - imagine the impact on fast chargers...

# we normally switch off most appliances at wall plugs.

If the water boards reckon ( at the rate of replacement now) it will take 450 years to replace all of our W/pipes, and the Electric companies take the same time to replace electric cables, EVs are not going to sell too well,(unless that is not mentioned at point of sale) or unless most charging points are self charging powerbanks

N/A - Electic only cars - RT

Norway and Sweden have far higher pure EV ownership than the UK

Good luck to them, but they probably have a better grid system and more charging points than we have, the national grid have already warned we do not have the capacity for all electric motors, not that anyones listening....

It could get interesting, power cuts while several thousand vehicles charge at once

Scandinavia has far more ability to store/use hydro-electric power than the UK - higher rainfall and lots of mountain valleys to build hydro-electric generators.

N/A - Electic only cars - madf

Regarding cables, I remember the compay I worked for installed a new computer system in office in the country. We asked the local electricity company if the projected additional load was acceptable. Yes was the reply.

So we went ahead installed it and ran it up. When operating at full power (this was 20 odd years ago and a BIG IBM installation) - for the first time - the overhead mains cable strung along poles beside the main road started to smoke. Eek:-)

After a long argument they replaced the dodgy section of cable - about 1.5 miles to nearest sub station..at their expense

I am sure that story will be repeated with EVs...

Edited by madf on 07/03/2018 at 09:52

N/A - Electic only cars - bluezzr1100

I did a calculation recently. If half of the cars in the UK were scrapped and their owners went out and bought a Nissan Leaf and wanted to charge them overnight for 8 hours we would have to build 50 extra 100MW power stations. And what would these stations be burning? Oil?Gas?Coal? Uranium?

How far would they get on that charge? A stop at the first motorway service station giving them just enough coulombs to travel home again!!

Buy a bicycle or take the train-and even a train is pretty inefficient!

N/A - Electic only cars - Bolt

I did a calculation recently. If half of the cars in the UK were scrapped and their owners went out and bought a Nissan Leaf and wanted to charge them overnight for 8 hours we would have to build 50 extra 100MW power stations. And what would these stations be burning? Oil?Gas?Coal? Uranium?

How far would they get on that charge? A stop at the first motorway service station giving them just enough coulombs to travel home again!!

Buy a bicycle or take the train-and even a train is pretty inefficient!

If we build powerstations as quickly as we build housing, there are going to be a lot of dissapointed electric car drivers, if they do it will be expensive especially if its not paid for by us, those paying for it will want a fast profit

too many problems with two wheeled riders, its bad enough now, trains cannot take the strain now so whats it going to be like with millions more passengers?

N/A - Electic only cars - gordonbennet

Given the speed with which freedoms in this country are being taken away, with barely a voice heard raised in protest (on the contary, welcomed by the brainwashed), i suggest lack of suitable power or sockets to plug ones compulsory electric transport device in is going to be the very least of our problems.

N/A - Electic only cars - Finguz

I had no idea people still actually read that ridiculous alternative reality comic.

www.youtube.com/watch?v=Kryp3uBhuek

Edited by Finguz on 16/03/2018 at 09:11

N/A - Electic only cars - Sofa Spud

I did a calculation recently. If half of the cars in the UK were scrapped and their owners went out and bought a Nissan Leaf and wanted to charge them overnight for 8 hours we would have to build 50 extra 100MW power stations. And what would these stations be burning? Oil?Gas?Coal? Uranium?

How far would they get on that charge? A stop at the first motorway service station giving them just enough coulombs to travel home again!!

Buy a bicycle or take the train-and even a train is pretty inefficient!

Did your calculation take into account the huge anount of energy that would be saved by not having to refine the oil to make the fuel to power petrol and diesel cars? Apparently an electric car uses about the same amount of electricity to travel a given distance as is consumed in refining the fuel to drive an equivalent i.c. engined the same distance.

About 1/3 of our electricity last year came from renewables and that's set to increase. Grid-scale battery storage will help even out the peaks and troughs.

The motor industry is heavily involved in electric vehicles now. Volvo has announced that the its current range of petrol and diesel engines will be its last.

N/A - Electic only cars - madf

Did your calculation take into account the huge anount of energy that would be saved by not having to refine the oil to make the fuel to power petrol and diesel cars? Apparently an electric car uses about the same amount of electricity to travel a given distance as is consumed in refining the fuel to drive an equivalent i.c. engined the same distance.

About 1/3 of our electricity last year came from renewables and that's set to increase. Grid-scale battery storage will help even out the peaks and troughs.

The motor industry is heavily involved in electric vehicles now. Volvo has announced that the its current range of petrol and diesel engines will be its last.

www.cfr.org/blog/do-gasoline-based-cars-really-use...o

says Musk's claims are as valid as his claims for Series 3 production..

N/A - Electic only cars - SteveLee

Of course the battery pack itself getting cold will instantly lose lots of capacity - 20%+ in some cases. Not a problem when the battery is under heavy load (ie driving) generating plenty of internal heat - will the ~1Kw draw of the heater alone be enough to keep the battery pack warm? So there may be a situation where constanly draining the battery may extend its charge!

N/A - Electic only cars - bluezzr1100

Good Point and no I did not however the fractionation column used to produce gasoline will also produce other fractions at the same time. Heavy fuel oil, diesel,gasoline,paraffin,LPG,Lubricants of all kinds and viscosity, ethene, plastics monomers...the list goes on so the energy isn't all used to produce petrol-petrol is if anything a by-product.

Also the power stations are at best 40% efficient. The batteries even when new will not deliver the energy used to charge them. The motors in the car are not 100% efficient although modern traction motors are better than they used to be. True, a petrol engine is also not 100% efficient. My point is we need extra capacity to charge all these cars and it simply will not happen. To replace 36 million cars you would need 100 100MW stations=10 000 MW or 4000 wind turbines if and only if the wind was blowing sufficiently hard everywhere all of the time and each produces 2.5MW.

Hydrogen fuel cells have been mooted but we would need an inexhaustable supply of hydrogen which only exists as water so electrolysis would be needed to release the hydrogen as a gas using more generating capacity.

Lets all attach a big sail to pa plank of wood mounted on wheels and we can all tarmac surf harnessing the wind directly. Tacking on the way home might prove a bit of a challenge however!.

If fusion reactors become a practical proposition then yes electric power would be the answer but other than experimental reactors these are nowhere near to becoming a reality.

Edited by bluezzr1100 on 17/03/2018 at 15:50

N/A - Electic only cars - Terry W

The efficiency of electric vs petrol is similar - depending on the assumptions made it is possible to prove either is better.

Assuming oil is used for geberation the main losses in electric mode are in generation as power stations are far from 100% efficient. Smaller level losses arise in transmission to charging points and the electric motor in the cars.

There are significant losses in petrol powered cars both thermal (exhaust, coolant) and anciliaries (comshaft, air con, batteries etc).

Hydrogen is a complete non starter at present with only very specialist uses as it is generated by steam reforming of fossil fuels.

If you are stupid enough to go out is very adverse weather only partially fuelled (petrol or electric) you are responsible for the consequences.

And as battery packs improve vehicles toward fossil fuel range, the amount of onboard usable energy increases accordingly.

N/A - Electic only cars - Sofa Spud

We already have just under 20 000 MW installed capacity of wind turbines, so you're talking of about half as much again. About a quarter of today's capacity is from offshore windfarms and that figure is set to grow.

N/A - Electic only cars - Sofa Spud

Norway and Sweden have far higher pure EV ownership than the UK

Good luck to them, but they probably have a better grid system and more charging points than we have, the national grid have already warned we do not have the capacity for all electric motors, not that anyones listening....

It could get interesting, power cuts while several thousand vehicles charge at once

The same battery technology that's being applied to electric cars is being developed for static applications, e.g. the Tesla 'Power Wall' and others. When these devices are integrated with solar panels it gives at least partial-sufficiency in electricity. So if people have a static battery installed in their house, that would give protection from power cuts and you could even charge an electric car from it if it had enough juice in. Also there's 'vehicle to grid' technology, which means you could run your house off your electric car during a power cut, as long as it's charged up. All this is assuming you've got enough money to install all this joined-up technology!

And then there's grid-scale storage facilities - warehouses full of batteries - some have been built already.

Edited by Sofa Spud on 05/07/2018 at 22:31

N/A - Electic only cars - James phillips

There will soon be a mobile charger available on the market. In addition we rarely get blizzards here in the UK

N/A - Electic only cars - FP

Mobile charger - getting its power from what?

N/A - Electic only cars - Sofa Spud

Mobile charger - getting its power from what?

I don't think any more electric car drivers will run out of charge on the road than drivers or petrol or diesel cars running out of fuel. But it will happen to a few people who forget to plug their car in overnight or whatever.

The simplest solution would be for a car recovery scheme that includes transporting you and your electric car to the nearest charging station.

N/A - Electic only cars - Bolt

The simplest solution would be for a car recovery scheme that includes transporting you and your electric car to the nearest charging station.

Only to find theres no electric, too many online

N/A - Electic only cars - badbusdriver

It could also mean breakdown services like the AA having specific vehicles for electric cars out of power, perhaps something with a powerful generator, or just a really big battery pack which could top up stranded cars?.

Not sure how similar the battery technology is, but i was reading a review about a CAT rugged smartphone with a massive battery and it could be used to top up the battery on other phones.

N/A - Electic only cars - FP

"There will soon be a mobile charger available on the market."

I want to know how a mobile charger (what is this, exactly? A "portable" charger - like, something small?) would work. A technical explanation, James? How will it produce electricity? And how will it produce enough to charge the enormous batteries of an electric-only car?

N/A - Electic only cars - sammy1

If your EV runs out of charge maybe the local plod could Taser it, 50,000volts might kick it into life!! Seriously these cars are going nowhere fast with their present technology and charging facilities. The subsidies to buy them will probably go the same way as solar panels with the goverment pulling the rug.

N/A - Electic only cars - FP

"...pulling the rug."

Or pulling the plug.

N/A - Electic only cars - madf

200-500kg for an elecric car battery.. so any refill battery will have to be 1tonne at least..

N/A - Electic only cars - badbusdriver

200-500kg for an elecric car battery.. so any refill battery will have to be 1tonne at least..

That shouldn't be too much of a problem, unless huge numbers are going flat. The Iveco Daily van can be had with a payload of up to 4140kg (and that figure is from a few years ago, so quite possible the current version will take more).

N/A - Electic only cars - Leif
Electric vehicles just aren’t cost effective at present. But if technology can double the battery capacity, we could halve the battery weight, which would increase the range, possibly significantly given that there is less battery to carry. I was reading recently about a new breakthrough which would do just that if it makes it from the lab to the high street. That is a big if.
N/A - Electic only cars - Bolt

"There will soon be a mobile charger available on the market."

I want to know how a mobile charger (what is this, exactly? A "portable" charger - like, something small?) would work. A technical explanation, James? How will it produce electricity? And how will it produce enough to charge the enormous batteries of an electric-only car?

It will work as a wireless charger does for a mobile phone, portable enough to put several in a van and slide under a car then connect to the mains, I think BMW are in the process of making one for release next year

N/A - Electic only cars - James phillips

"There will soon be a mobile charger available on the market."

I want to know how a mobile charger (what is this, exactly? A "portable" charger - like, something small?) would work. A technical explanation, James? How will it produce electricity? And how will it produce enough to charge the enormous batteries of an electric-only car?

It will work as a wireless charger does for a mobile phone, portable enough to put several in a van and slide under a car then connect to the mains, I think BMW are in the process of making one for release next year

That was my understanding as well

N/A - Electic only cars - Avant

"....slide under a car then connect to the mains."

That still isn't the answer for the people who would benefit most from EVs - those who live in towns and cities, most of whom park on the street. Some form of remote charging needs to be invented - no doubt it will be if it isn't already being developed.

N/A - Electic only cars - Bolt

"....slide under a car then connect to the mains."

That still isn't the answer for the people who would benefit most from EVs - those who live in towns and cities, most of whom park on the street. Some form of remote charging needs to be invented - no doubt it will be if it isn't already being developed.

remote control ev charging control and connection is already here (search google) if the BMW system is used it can make parking spaces wireless chargers with your mobile phone in control, system mentioned before is emergency slide unit for those who run out of electric

built in system would work in parking spaces below road level and charged to your account via smartphone, which could be connected directly to the road cable, though same problem may occur where too many are connected and slow charging rate which is not as yet mentioned

N/A - Electic only cars - Alby Back
The main problem with electric cars at the moment is that they can only be bought by people who could afford the petrol.
N/A - Electic only cars - sandy56

The way forward is for electric cars for cities use only, and they are shared. You only pay for what you use. The rest of us will have to use the ICE or hybrid for a while yet. Lets not forget we will need to build a lot more power stations to cope with the increase in demand required for electric cars. Wind energy and solar will not be enough. Very large grid scale batteries are still decades away. We will need to let those nice Chinese and French build some more large power stations.

Edited by sandy56 on 06/07/2018 at 11:14

N/A - Electic only cars - Sofa Spud

The way forward is for electric cars for cities use only, and they are shared. You only pay for what you use. The rest of us will have to use the ICE or hybrid for a while yet. Lets not forget we will need to build a lot more power stations to cope with the increase in demand required for electric cars. Wind energy and solar will not be enough. Very large grid scale batteries are still decades away. We will need to let those nice Chinese and French build some more large power stations.

Arguably electric cars won't have much effect on overall energy demand if it's true that it takes as much energy to refine the fuel for an IC car as it would to run an equivalent electric car for a similar distance.

Wind energy and solar will not be enough all of the time, but if we doubled that sector compared to now, we'd be getting over half our electricity from those sources for much of the time.

Large grid-scale batteries are already in existence or under construction although energy storage is only a small factor in the supply system at the moment.

N/A - Electic only cars - Leif

Except that a) cars do not as yet have wireless charing pads built in, b) wireless charging is inefficient compared to a direct connection hence wasteful, c) it would require everyone to standardise on the same charging mechanisms, d) it would charge slowly unless each car had a fast charge hardware e) even with fast charging it takes half an hour, f) it would require large vehicles preloaded with batteries or some form of generator on board with petrol/diesel tanks.

In addition we do not have the infrastructure. Charging points are limited and it would need the tearing up of pavements to install them, with massive disruption. And we do not have the electric generating capacity to support large numbers of leccy cars.

Apart from those minor points, it's great.

N/A - Electic only cars - madf

All this talk of charging infrastructure and power stations is very relevant BUT if teh local electrical substation cannot cope - and/or teh local electricity cables are old, or limted in capacity then you can have all the charging stations in the world but if too many connect at once, tthe cabling /and/or/ teh sub station will not cope..

I have seen overhead electricity cables smoking (yes really) due to overloads.. All very well for those in cities with modern underground cables. But teh suburbs with miles and miles of equipment and cabling installed in the 1960s will require LOTS of new equipment - and roads dug up etc..

Strangely enough no-one mentions that.

Of course if you have local storage and new cabling from there to charging points, that will ease teh situation.. Except that requires space - and space is at a premium usually in those areas..

Nothing new or earth shattering.. just a major review and revamp.. And if a local substation does overload, weeks to repair if very old.

N/A - Electic only cars - Leif

Strangely enough no-one mentions that.

I did.

This reminds me of self driving cars. Sounds great. But my new car has emergency braking assist that fires for no reason, wipers that failed after one month, a key that failed after two months, and numerous glitches with the entertainment system. And they want to make something massively more complex that will drive autonomously? Ha ha ha ...

I fear that reports of the death of the petrol car and driver have been exaggerated.

N/A - Electic only cars - SteVee

What happened to hydrogen fuel cells ? These were always touted as the alternate to batteries. Fuel stations could use night-time electricity to convert water and we could fill up quickly. Thw whole idea seems to have gone into some 'Tomorrows World' graveyard.

I want to see driverless trains well before driverless cars. We already have working examples (DLR), but the idea has not been rolled out - and train drivers are now very expensive, at least compared to bus drivers.

N/A - Electic only cars - Bolt

What happened to hydrogen fuel cells ? These were always touted as the alternate to batteries. Fuel stations could use night-time electricity to convert water and we could fill up quickly. Thw whole idea seems to have gone into some 'Tomorrows World' graveyard.

I want to see driverless trains well before driverless cars. We already have working examples (DLR), but the idea has not been rolled out - and train drivers are now very expensive, at least compared to bus drivers.

Unless im mistaken the only place that is using fuel cell is California, I read a report that it cost someone over 100 dollars to fill up a Honda clarity which did 300 miles on that tank

though I think it would be more practical staying with hybrid untill hydrogen is more readily available

I noticed more EV charging points being installed at motorway services but not being used

I thought it was the train drivers that were holding driverless trains back due to safety concerns, not heard anything about it since....

N/A - Electic only cars - FP

"I want to see driverless trains well before driverless cars."

I can't say how soon that will be (driverless trains), but the Thameslink "central core" between St Pancras and Blackfriars is now computer-operated, as the system is designed to run the trains as close as two minutes apart.

Maybe it's the beginning of something bigger.

N/A - Electic only cars - focussed

A big fly in the ointment as far as the UK's secure electricity supply will be whether the EU countries that sell electricity to the UK are prepared to keep propping up the UK national grid by selling the UK power via the undersea connectors after Brexit.

Right now about 10% of the UK power demand is being supplied from sources not in the UK.

So - electric vehicles could take a back seat as a non -essential after Brexit just to keep the lights on.

N/A - Electic only cars - Sofa Spud

A big fly in the ointment as far as the UK's secure electricity supply will be whether the EU countries that sell electricity to the UK are prepared to keep propping up the UK national grid by selling the UK power via the undersea connectors after Brexit.

Right now about 10% of the UK power demand is being supplied from sources not in the UK.

So - electric vehicles could take a back seat as a non -essential after Brexit just to keep the lights on.

While I think Brexit is going to be very harmful to Britain, I don't think the undersea connectors will be affected. The connectors will still be there and presumably they are two-way, so although it's normally us getting electricity from France it could work the other way round if need be. In any case the French government (EDF) owns several of the power stations in Britain, parts of the supply network and is one of the partners in the Hinkley Point C project.

N/A - Electic only cars - pyruse

Surely the solution if you are worried about running out of power in your electric car is just to tow a diesel generator behind; just connect it and fire it up when the battery runs out and you are on your way. :-)

N/A - Electic only cars - corax

Just caught something on the news today about more houses being fitted with charging points for electric cars, or did they say that more charging points should be fitted, either way, the issue will be power generation if demand goes up, we are already being warned of blackouts in winter.

N/A - Electic only cars - Bolt

Just caught something on the news today about more houses being fitted with charging points for electric cars, or did they say that more charging points should be fitted, either way, the issue will be power generation if demand goes up, we are already being warned of blackouts in winter.

Building regulations are being altered to include fitting of EV electric sockets on every new build, so they say, not sure when it comes in but won`t be long from the sound of it