First 100% electric motorhome

[Yorick]

none, the solar is just for the 12v electrics, that amount wouldnt even make a scratch in the drive batts.
they ae planning on just 75-100 miles per day and recharge either as camp sites or public chargers

Maybe. But humour me.

How far would a day's charge take them?

I'm curious.

 

[Tombola]

Maybe. But humour me.

How far would a day's charge take them?

I'm curious.

lets say they do well and get 8ah per 100w, so 80ah
convert 80ah to kwh would be around 2kw at 12v , but considereing the EV battery will be around 300-600v even I dont know that conversion.

Ill guess at 10 wheel rotations per hour

 

[suavecarve]

60,000 Euros……?!?

On a faulty presumption that they recharge all their electricity for the "engine" from solar (for free) and the equivalent of 1.8 euros per litre and 6 miles per litre for diesel they would break even at 200,000 miles.

Presuming they dont then need to replace the batteries.

Diesel for me still at the moment !

 

[autorouter]

Assuming 1Kw of solar for 10 hours a day. Does that put 10 Kws into the batteries?

100W of solar typically can manage 40Ah at 12V on a good summer day. That's 40 x 12 = 480 watt-hours, about 0.5kWh. So 1000W of solar should give about 10 times that, ie 5kWh. That's quite enough for habitation demand in the summer, with no heating required.

The drive batteries will probably be 40kWh to 80kWh, so 5kWh per day is not a great contribution to that. The other way to look at it is, using 5kWh per day from the drive batteries is not going to flatten them quickly. So if you know you are within reasonable range of a charge point, you could probably use 70 to 80% of the charge for the habitation, and drive straight to the EV point to recharge when you decide to move on.

There's no difficult technology involved in running 12V habitation from a 400V DC battery. Especially if the vehicle charger is 'bi-directional', as they increasingly are. It would be like having an EHU supply constantly on tap, so you could run a charger for a 12V battery from it, and other appliances like microwave, induction hob, fan heater directly from the 240V supply. Bi-directional charging is set to become more common for all kinds of reasons - as you may know, Victron Multiplus inverter/chargers are bi-directional.

 

[Yorick]

So if you left it at home for 2 weeks, it would collect the equivalent of a full tank of fuel or a full charge of leccy?

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[AndyPK]

Don’t forget the system losses due to inefficiency…….
Better make it three weeks to be safe….?

 

[CazPaul]

Surely that’s a typo and it was £6000 to replace the batteries not £60000?

 

[Tombola]

So if you left it at home for 2 weeks, it would collect the equivalent of a full tank of fuel or a full charge of leccy?

In theory in ideal conditions then, with no drain it would almost fill the small one and half fill the large one.

 

[Yorick]

In theory in ideal conditions then, with no drain it would almost fill the small one and half fill the large one.

So if you went away twice a month for a long weekend, the fuel cost would be free

 

[Tombola]

So if you went away twice a month for a long weekend, the fuel cost would be free

if we were lucky enough to live in Lanzarote

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[AndyPK]

if we were lucky enough to live in Lanzarote

But where would you go after the first couple of trips…….?

 

[Yorick]

if we were lucky enough to live in Lanzarote

LOL. I was just curious really.

So if you were in Spain for a few months and only doing 200 miles a week it will take care of the fuel.

Leccy is baffling to me so just wanted to put it ways that I understand.

 

[Yorick]

But where would you go after the first couple of trips…….?

There are many places to visit on these islands.

 

[AndyPK]

Can you get a ferry to them as well………?

(Genuine question, Yorick )

 

[Tombola]

LOL. I was just curious really.

So if you were in Spain for a few months and only doing 200 miles a week it will take care of the fuel.

Leccy is baffling to me so just wanted to put it ways that I understand.

Id say so yes, bear in mind normal day to day use aswell, but like you say, even if it offsets the running cost by a percentage its a winner

most folk divert extra solar to fridges, so I spose in this inatance divert to the journey.

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[autorouter]

So if you left it at home for 2 or 3 weeks, it would collect the equivalent of a full tank of fuel or a full charge of leccy?

Yes, and you could even do that in summer while camping. But the downside is, you'd have to economise on electric power by substituting tea and toast with beer and doughnuts.

 

[Yorick]

Can you get a ferry to them as well………?

(Genuine question, Yorick )

Yup. Half hour from here to Fuertaventura.

3 hours from there to Gran Canaria

3 hours from there to Tenerife

Etc..

 

[AndyPK]

Are the ferry prices for Motorhomes reasonable too?
(Googling it too! )

 

[Richard n Ann]

Are the ferry prices for Motorhomes reasonable too?
(Googling it too! )

Looks like the ferries are to Huelva on Google maps

 

[Tombola]

Yup. Half hour from here to Fuertaventura.

3 hours from there to Gran Canaria

3 hours from there to Tenerife

Etc..

never thought about highland hopping.

Would be lovely up near mount Tiede at night

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[Yorick]

never thought about highland hopping.

Would be lovely up near mount Tiede at night

Covered in snow in winter.

 

[Yorick]

Looks like the ferries are to Huelva on Google maps

And Cadiz.

 

[Tombola]

Covered in snow in winter.

even better

 

[suavecarve]

Surely that’s a typo and it was £6000 to replace the batteries not £60000?

Cheaper to replace than a Diesel engine then and will be better off after 20,000 miles financially ?

 

[Lenny HB]

Think the closeness of parking on that site leaves a lot to be desired

Nice wide spaces compared to a lot of Stellaplatz and Aires we use them all the time.

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[Coastal Cruiser.]

Give me my 6mtr space every time, even with the occasional “ Colonel Blimp” site warden

You won’t find many places in Europe with that luxury

 

[Toady]

Many tight aires out this way. Interesting last night. Spanish van behind us started changing his gas bottles whilst p****d at midnight. Took some time.

 

[AndyPK]

Many tight aires out this way. Interesting last night. Spanish van behind us started changing his gas bottles whilst p****d at midnight. Took some time.

Live dangerously I say…….!

 

[Yorick]

Sorry if I seem to be labouring a point, but I'm interested

I was reading elsewhere that most EV charging points charge about £1 per Kwh.

So these 1 Kw panels will save about £1 per hour.

Tenner a day isn't to be sniffed at.

Is my reckoning close?

 

[Tombola]

Sorry if I seem to be labouring a point, but I'm interested

I was reading elsewhere that most EV charging points charge about £1 per Kwh.

So these 1 Kw panels will save about £1 per hour.

Tenner a day isn't to be sniffed at.

Is my reckoning close?

Last I checked, Tesla supercharging 50p per kw , but think they are moving to a peak time rate a bit higher between 4pm and 8 pm.
2 years ago it was 20-24p

edit Yorick ..oh and for ref.... I average about 3.3 mile per kwh, but I dont drive conservatively nor pay special attention to air con or heater.

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