We need ultra light four wheeled cars

[freebeard]

I have a diesel. It is hot, noisy, ... slow, and it shakes and rattles.

[All Darc]

EV cost few per mile (they say), if we calculate energy price vs gasoline price.

BUT...
They never show the cost of the lead acid batteries, that last just 350 cycles and require a large number.

So I ask you guys : What's the real price per mile (or km) based in the enrgy cost plus the battery cost per mile, since the battery will last a limited numbers of charge???

Originally Posted by freebeard

All problems that could be alleviated by an EV conversion, right?

[RedDevil]

Originally Posted by All Darc

What's the real price per mile (or km) based in the enrgy cost plus the battery cost per mile, since the battery will last a limited numbers of charge???

That's impossible to quantify. How much is the real price of a hammer per nail?
That depends on how you use it.
In other words, how hard you drive it down.

Generally batteries do better if you stay away from heat and never fully charge or discharge it. Or if it bears a red T.
https://www.quora.com/What-is-the-ex...-Tesla-battery

Tesla expects them to last at least 8 years and infinite miles, since that’s the warranty they offer with the Model S — they define the lifetime of a battery as being when it cannot hold more than 70% of its original charge. But actual data suggests that they will last longer.

Infinite miles suggests the price per mile could be zero. It would never need to be replaced.

[All Darc]

Ok, let's supose someone take care of the batteries, do not discharge too much (lead acid have thse details) and avoid too much heat.

Let's start with how many lead acid batteries it's required to a medium size car conversion, and the price of the batteries.

Originally Posted by RedDevil

That's impossible to quantify. How much is the real price of a hammer per nail?
That depends on how you use it.
In other words, how hard you drive it down.

Generally batteries do better if you stay away from heat and never fully charge or discharge it. Or if it bears a red T.
https://www.quora.com/What-is-the-ex...-Tesla-battery

Infinite miles suggests the price per mile could be zero. It would never need to be replaced.

[Piotrsko]

So far I have 6 years use on 8 -9 year old volt battery pack. Maybe lost 5% capacity, cant tell exactly because measurement is imprecise. I got 4 years on the FLA pack that was replaced by the current volt pack mostly for the weight reduction and current increase.

So $2200 purchase, maybe $1.15 a day charging for 26 mile round trip to work, just not worth calculating costs.

Based on current useage, telsa expects their vehicle to be scrapped long before the pack dies.

[All Darc]

LEad Acidy battery don't last so much with so few loss of capacity...
Even Lithium don't last so much...

Do you have a magic battery?

Originally Posted by Piotrsko

So far I have 6 years use on 8 -9 year old volt battery pack. Maybe lost 5% capacity, cant tell exactly because measurement is imprecise. I got 4 years on the FLA pack that was replaced by the current volt pack mostly for the weight reduction and current increase.

So $2200 purchase, maybe $1.15 a day charging for 26 mile round trip to work, just not worth calculating costs.

Based on current useage, telsa expects their vehicle to be scrapped long before the pack dies.

[hayden55]

"They never show the cost of the lead acid batteries, that last just 350 cycles and require a large number."
Also the number you quoted is the 80% depth of discharge life cycle for deep cycle batteries. Some even quote 400 cycles at this number (Odyssey warranty), and it goes up a lot the less you deeply discharge it.
Yeah Lead acids are the worst in cycle life. I know panasonic quotes up to 40,000 cycles for discharge between 30 to 70% dod for their Telsa supplied 18650's li-ion cells which is fantastic. Even if you convert it down to I think 92% depth of discharge this still gives you 750 cycles. And even when they are deemed to low ah capacity for a car they are friggin fantastic purchases for diy power walls of all sorts.
Life cycle example my 2010 Prius has 140k miles, original 12v battery, and original nimh battery.
But replacement cost for the battery pretty low, 600$ now to replace the prismatic cells inside the pack with refurbished units and I think brand new cells not even refurb ones are only 900$ (~32$ ea) from panasonic now.
I think the reaction to electric cars can be a little dramatic.

[freebeard]

Do you have a magic battery?

https://ecomodder.com/forum/showthre...ite-36954.html

Did your interview not work out?

[Hersbird]

Some of this seems overly complicated. The price the consumer will see is the difference between what they paid for the car and what they sold the car for later, then add what the maintenance costs were, the taxes and insurance, and finally what it cost them in electricity (or gas). You don't need to know how much a piston costs on a gas or how much a battery costs on an electric. Plus 10 years ago somebody that knew their way around a high voltage battery pack was more like a rocket scientist in the fossil fuel world. Now rebuilding a Li-on battery may be more common DIY than rebuilding a small block Chevy is.

[All Darc]

Still in contact. I had a response few days ago, and she was tripping back to Portugal. Few weaks earlier she was busy and taking cara od a sick friend.

I hope there is still chance to make the interview.
I still need to test the program to record video from SKYPE or record the PC screen video and sound.

Electric car conversion it's still expensive. The battery can weigh more than a chubby passanger. Ok, without the combustion engine motor (more electric motor) you get some weight reduction to the battery, and without the weight of fuel you also got some reduction, but even so battery it's large and weight as lot in the case of acid lead.

Originally Posted by freebeard

https://ecomodder.com/forum/showthre...ite-36954.html

Did your interview not work out?