Re: [EVDL] 5 k pot wiring? controller wiring? mis match

You are making us guess with less than you have. Can you tell what scooter and controller - maybe a link online? On Mon, Jun 1, 2015 at 9:49 PM, ken via EV wrote: > I have a very simple controller i'm using on my scooter. > > throttle cable it shows > Blue, green, black > _ > > Contro

Re: [EVDL] Success!

t; wrote: > On 1 Jun 2015 at 12:05, Michael Ross via EV wrote: > > > This is complicated by the general rule not to ever, ever charge Li ion > > cells in your residence. > > Good grief, why not? In our house we regularly charge 3 portable > computers, > 2 mobile pho

Re: [EVDL] Success!

"No one I know of charges fully." The eBike and light EV crowd are not so fortunate. (The area I am most concerned with.) They typically buy no name packs with, BMS of unknown function and provenance, and chargers with all the stickers removed and unknown internal tweaks. My first off the reserva

Re: [EVDL] Success!

In a phone conversation, Dr. Dahn told me that LFP starts deteriorating a 104°F when fully charged. You can simply not charge fully. Exactly how not fully? I don't know. Also there may be differences depending on the form factor, source of the electrode, electrolyte compositions, and so on. No r

Re: [EVDL] GC batteries

It hasn't been stated clearly the Li cells have greater functional capacity for equal total capacity compared to lead acid. You can fill the lead acids to the brim and they on't be hurt, but I understand many people never take them below 50% capacity before recharging - to get as many cycles as po

Re: [EVDL] Design News: Why Aren't Electrical Cars Sales Better? It's the battery.

I don't think you mentioned MPGe before. WIki and the internet are pretty informative about this. http://en.wikipedia.org/wiki/Miles_per_gallon_gasoline_equivalent Lots of links in the biblio area. On Fri, May 29, 2015 at 12:08 PM, tomw via EV wrote: > Yes they are inefficient. The typical nu

Re: [EVDL] FW: On the road again.

I agree with Cor's comment on charging versus resting voltage - I mean a cutoff voltage to be the "resting voltage." On Thu, May 28, 2015 at 2:18 PM, Michael Ross wrote: > I don't know of a lithium cell that would be carrying significant capacity > at 2 Volts. That voltage would not hurt a Li ce

Re: [EVDL] FW: On the road again.

I don't know of a lithium cell that would be carrying significant capacity at 2 Volts. That voltage would not hurt a Li cell. 2V would be a reasonable low cut off. Higher gives you more leeway if your are far out of bottom balance. If you bottom balance to begin with you are safer for a longer tim

Re: [EVDL] Lithium install in Tucson

Presumably CALB are still LiFePO4? Remember - DO NOT CHARGE them fully and let them sit in the heat. On Wed, May 27, 2015 at 12:09 PM, Rush Dougherty via EV wrote: > Wups. not an S-10, but a Ford Ranger EV... > > Rush > Tucson AZ > > > > -Original Message- > > From: Rush Dougherty [

Re: [EVDL] Design News: Why Aren't Electrical Cars Sales Better? It's the battery.

I think EVs might be a better deal (at least the smaller ones like iMIEV and Leaf) than solar arrays. Solar needs subsidies to be a good economic deal for the owner, hte going rate for electrons makes a difference too. You didn't account for the roughly 75% reduction in fuel cost to own an EV.

Re: [EVDL] Design News: Why Aren't Electrical Cars Sales Better?It's the battery.

Len, I am with you. But, if you make a fair accounting of the cost of fuel versus the cost of electrons - it does look a lot better. Then you can reasonably say that the EV is better for the environment. That much is true but many folks won't let that sway them. In the even more intangible si

Re: [EVDL] EVLN: GenZe e-bicycle has the same batteries as a Tesla-S EV

I think your are right, but who really knows? It is all anecdotal to us mere mortals. Probably they are the same size. I don't think Panasonic and Samsung are using the same chemistry, and I think Samsung is not at the same levels of quality, etc. It could all be different tomorrow. On Fri, Ma

Re: [EVDL] Wiring sizing

An ampacity chart is also a good google images search. Remember that ampacity depends on insulation and how well the wire or bundle of wires can convect heat to air. On Sun, May 17, 2015 at 12:34 AM, John Lussmyer via EV wrote: > On Sat May 16 21:21:56 PDT 2015 ev@lists.evdl.org said: > >How do

Re: [EVDL] Supercharging is not the way.

You can't just splice in extra nodes everywhere. The wiring and circuit protection has to accommodate the potential increased concurrent load. Realistically, this applies to the entire grid. You cannot suddenly power a significant amount of our transportation with the existing grie. The ampacit

Re: [EVDL] pouch cells

They are LFP so you have to be careful not to have them at 100% SOC and over 104°F or so. This will damage them. They suggest a charge up to 3.65V. I think that is too high. Guessing, anything over 3.45V is nearly pointless and just puts the cell in a more reactive (a bad thing) chemical state.

Re: [EVDL] pouch cells

You provided nothing that would help us answer your question. Not even the name of the reseller or manufacturer. What kind of inquiry is that? If you won't tell us, or show us, then there can be no real answer. "4000 cycles at %90 dod" This is a mostly meaningless specification. Taking lithium

Re: [EVDL] StoreDot promises electric car that charges in 5 minutes

Yes, the operative phrase "promising within a year." -- To invent, you need a good imagination and a pile of junk. Thomas A. Edison A public-opinion poll is no substitute for thought. *Warren Buffet* Michael E. Ross (919) 585-67

Re: [EVDL] EVLN: WA Loves Electric Cars, But Gets Very Few

Amen. But some like get some mileage overseas. This is an ICE example, I bought a Scion xB early on. It was not popular, a new marquee, new sales plan (no haggle was new then), dealer did not care, etc. I bought because the drive train had been in Yaris for a decade in Europe, and lightly used

Re: [EVDL] virtual power plant

SC are newly manufacturers. SC bought SIlevo and plans a highly automated facility in Ohio I believe. They may intend to honor a warranty that is beyond what the current panels should be. But since the mostly own the panels and the electrons they make for the installations, it is not worth their

Re: [EVDL] virtual power plant

RIght my Sunpower array is insured and bonded for complete parts and labor for 20 years. The Sunpower PV is guaranteed for efficiency. In 20 years my PV should be still more efficient than any of the lower cost systems are new. Nothing matches quality manufacture for long use durable goods. On

Re: [EVDL] virtual power plant (waiting for better...)

Bob, I am with you - PV makes sense with good subsidies. But most people can't afford it, or do not have the credit to get it. I did it, knowing I could make more simply investing in a total stock market fund. Without the tax credits I would not have done it; the payback would have been approach

Re: [EVDL] virtual power plant

"Even at 3% per year, by the end of 20 years, that 9.7 cents will be 18 cents. ​"​ Yes, that is a personal justification for the financial investment. In 20 years at 3% a kWh will be less here than it is in Connecticut today. Much as I want to whine about Duke Progress, one result of their intra

Re: [EVDL] Low cost solar, virtual power plant

What SC offers is a way for homeowners who are not flush to get something in the way of renewable energy going. It you are just scraping by, you can build a purpose made structure for PV, you may not even have the credit or collateral for a $15k or $20 financed installation. So yes it is lacks t

Re: [EVDL] virtual power plant

Historically, the US markets have gained ~10% a year for 100 years. In total market index fund is a very good in this context - not PV or storage. But compared to safe dividend paying stocks it is a good deal, and you don't want to be all in with the market. I was happy to put up enough PV to ma

Re: [EVDL] virtual power plant

"EVs are much better at the high power levels required for stabilization (though I do not see anything preventing the solution, other than that the spec is for a low power from the battery, I mean 8 Amps at around 400V is not an EV power level, it is actually rather underwhelming - I wonder why Tes

Re: [EVDL] Tesla will sell the home battery, the Tesla Powerall, for $3, 500,

We don't have enough batteries yet. I heard musk say we need hundreds of gigafactories to make this kind of dent. We don't even know where to mine the materials necessary. Some day, we can hope. Think decades. On Mon, May 4, 2015 at 1:04 PM, Ben Goren via EV wrote: > Here's the link: > > > h

Re: [EVDL] Tesla will sell the home battery, the Tesla Powerall, for $3, 500,

Tesla have offered another product that is too expensive for half the population to ever consider. This product will have no noticeable effect. When SolarCity and others provide financing for people with no discretionary income or credit, then the residential side could reduce the need for nuclear

Re: [EVDL] Battery Types

Decent paper on batteries: https://www.bcg.com/documents/file36615.pdf Not sure its age, at least a few years old. On Sun, May 3, 2015 at 3:39 PM, Peter Eckhoff via EV wrote: > There were some nice Power vs Energy density figures awhile back for the > various battery types. Most resembled fat

Re: [EVDL] EVLN: Enclosed human-electric hybrid spins around the UCF campus

That looks a lot like the ELF product of the company I just started working for. I was previously a beta tester for them. It is a good design. I have been hired to develop new products, but I hope I can add to their manufacturing, purchasing and other efforts as well

Re: [EVDL] Battery Types

I would say that any chart would be untrustworthy unless it was put together very recently. Any chart would be possible accurate on some counts not others. It is rather unfortunate, but true. Can you be more specific about the specifications you are looking at? Provide links, etc. On Sun, May 3

Re: [EVDL] Tesla plugs into new market with home battery system (backup foolishness)

blem - but too few people are able to design properly, because they use old information based on inferior testing. On Sat, May 2, 2015 at 11:35 PM, EVDL Administrator via EV < ev@lists.evdl.org> wrote: > On 2 May 2015 at 23:00, Michael Ross via EV wrote: > > > Distributed el

Re: [EVDL] Tesla plugs into new market with home battery system (backup foolishness)

Distributed electrical utility is far more efficient than every little node meeting peak demand. It just requires people to share, and to value that efficiency enough to engage in collective collaborative activity. I DO believe that some Li ion cells can be operated to last at least 10 years, som

Re: [EVDL] Tesla plugs into new market with home battery system (backup foolishness)

One issue with LFP is the process to apply the LiFePO4 is the conductor has to take place in a noble atmosphere - as opposed to most of the others that can simply be done in air that is clean. I have heard EM say that Ni is the costliest part of Ni containing cells, even more than CO or Mn (also

Re: [EVDL] Tesla plugs into new market with home battery system

*"I thought that linesmen would routinely attach a grounding wire to the line before touching it,* *except when they are in a completely insulated bucket to work on a live line, but I doubt that happens much.​"* I am just replaying what Duke Progress says, and probably every other utility. The c

Re: [EVDL] Tesla plugs into new market with home battery system

Depending on how Tesla chooses to run and protect the packs, and the type of cell construction and chemistry, there is no reason for 5000 cycles to be unobtainable. I feel certain they will choose small cylindrical cells - which is a good choice for cooling, for resistance to expansion, automated

Re: [EVDL] Tesla plugs into new market with home battery system

Whatever the situation is today with Li ion cells, it will be very different in a few years or a decade. There is little economy of scale in the industry. Understanding of proper QA by users or by many suppliers is almost non-existent. Besides which prior methods and equipment for testing have be

Re: [EVDL] EVent: Tesla Plans To Open EV Doors To All Hackers 8/6-9 Las Vegas NV

This is how they make it hack proof. On Fri, May 1, 2015 at 8:16 AM, brucedp5 via EV wrote: > > > '... Anything can be hacked, it just takes time ...' > > > http://www.forbes.com/sites/thomasbrewster/2015/04/28/tesla-opening-car-to-hackers/ > Tesla Plans To Open Car Doors To All Hackers This Sum

Re: [EVDL] its your car, not theirs

I expect this to be a pendulum swing, you can understand the laptop folks getting nervous after the firestorm about laptops flaming on on the living room floor - if you don't tamper well. and it is exceedingly likely a tamper can go wrong given the wild world of Li ion batteries...as a product desi

Re: [EVDL] its your car, not theirs

n wrote: > On Apr 27, 2015, at 8:52 PM, Michael Ross via EV > wrote: > > > being the devil's advocate... > > > > This is clearly not great for the poor or the DIY'r, but the new car > buyer > > may have much better cars to choose from, I expect instea

Re: [EVDL] its your car, not theirs

being the devil's advocate... This is clearly not great for the poor or the DIY'r, but the new car buyer may have much better cars to choose from, I expect instead of 200K miles being common, 100K was a great thing when I was young, I am sure with EVs there will be an expectation of 300K and 400K

Re: [EVDL] Cmax solar concept.

Divide 300Wh into 12kWh - only 40 hours in full sun to charge all the way! They should be at least a little embarrassed proposing such a thing let alone working on it. On Tue, Apr 21, 2015 at 4:06 PM, Thomas Brannan via EV wrote: > But my driveway is aligned north-south and covered with trees!

Re: [EVDL] Cmax solar concept.

https://www.youtube.com/watch?v=wNnupxkl2vA On Tue, Apr 21, 2015 at 3:22 PM, Lawrence Rhodes via EV wrote: > SOLAR Powered Passenger Car - Ford CMAX Solar Energi Hybrid Concept > > | | > | | | | | | | | > | SOLAR Powered Passenger Car - Ford CMAX Solar Ener... | > | | > | View on

Re: [EVDL] Leaf Voltage

A word of warning then - a scientific paper may not represent what is actually manufactured, particularly if much time has elapsed. A year or two out of date I might worry. There is more to it than only the positive electrode chemistry. Electrolyte chemistry, construction details and so on. On T

Re: [EVDL] Leaf Voltage

I think really knowing this about Li ion cells is critical. Anecdotal is not good enough, being wrong about the electrode chemistry is to be wrong about critical information. Knowing how to avoid 100% SOC is critical. A perfectly fine pack can be misused and its life ruined. On Tue, Apr 21, 201

Re: [EVDL] Leaf Voltage

-David, Where were you able to learn these xVolts = y%SOC? I think you are very right about the max voltage, I don't what numbers are right for a given version of any cell, but I am certain that 0.2V too high can really mess things up. On Mon, Apr 20, 2015 at 9:42 PM, David Rees via EV wrote:

Re: [EVDL] Leaf Voltage

I am curious, do we know the electrode composition for Leaf cells? On Sun, Apr 19, 2015 at 5:27 PM, Jay Summet via EV wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > Absolute max 4.2 volts per cell. (Note that a leaf module is made up > of 4 cells (2parallel, 2 series) so 8.4 volts

[EVDL] G+ invites

EVDL< Dave Roden says I have spammed the list with G+ invitations. I certainly would not have done so purposefully. I cannot tell that I have done this - there is no indication that I can find. Dave wants me to undo it, but I see no means to do so. If anyone knows how this could have happened a

Re: [EVDL] EVLN: Tesla-X Spied w/ a Tow Hitch AWD r:225mi (v)

Willie, What if you put pedal to the metal for a while - like 10 minutes? I heard they are governed at some point - because of heat. Towing up a mountain would simply cause the same effect at lower speeds. I am not sure why this idea - that there is a limit to how much a Tesla can tow - is ann

Re: [EVDL] EVLN: Tesla-X Spied w/ a Tow Hitch AWD r:225mi (v)

e are both BS'ing. On Tue, Apr 14, 2015 at 11:47 AM, Ben Goren wrote: > On Apr 14, 2015, at 8:22 AM, Michael Ross via EV > wrote: > > > It is likely the Tesla cars can pull it just fine, but will probably > > overheat towing, especially on hills. Towing packages for t

Re: [EVDL] EVLN: Tesla-X Spied w/ a Tow Hitch AWD r:225mi (v)

Ben, It is likely the Tesla cars can pull it just fine, but will probably overheat towing, especially on hills. Towing packages for trucks have all manner of extra cooling gear, for transmission, oil coolers, oversize radiators, and so on. It is a simple application that is difficult in practic

Re: [EVDL] Michelin radial 95/80 r16 radial

Car tires "want" to be circular in cross section - if you pump them hard enough they will be. The car tire has a flattened cross section because ot a really thick, shaped side wall, and relatively low pressure. Neither one a great thing for a high efficiency vehicle. The whole high efficiency bu

Re: [EVDL] The Tesla Factor: Elon Musk Will Force Auto Industry... GRILLS!

Systems always seek a state of lowest potential; falling drops of water are round in front and taper back because they can conform to a state of lowest potential as the move through the air. This doesn't make it a practical shape necessarily, but it is an ideal worth considering. I have been invo

Re: [EVDL] self driving cars

I have driven to many millions of miles to want to drive a single one more. But in this backwards country mass transit is very low priority. As soon as a self driving car is low enough in cost to suit my frugal nature I will have one. I can tell you my 83, and 82 year old parents would be all ov

Re: [EVDL] ENERDEL Battery Experiences

Thanks Tomw, That was a nice video. I didn't hear any contradictions. I learned somethings about cell construction I did not know. Dahn was lecturing to explain HPC testing, and Whitacre was lecturing to help people who assemble and manage packs, so they have a little different slant. Regardi

Re: [EVDL] ENERDEL Battery Experiences

Why is it you think I am making this up? I have no reason to do anything, but report what has been found using the new testing. I just read the papers, talked to the people, and watched that video enough to follow it. "Automotive product validation is pretty rigorous." Apparently, they did it w

[EVDL] Fwd: Temperature rating (Was: ENERDEL Battery Experiences)

Paul Dove found this summary of the video: http://powercartel.com/2014/11/notes-from-why-do-li-ion-batteries-die-lecture/ An excerpt from around 25:00 in the presentation: - Lithium Cobalt Oxide (LiC02) - Lowest parasitic reactions at 30°C - Moderate at 60°C, but still lower tha

Re: [EVDL] ENERDEL Battery Experiences

t.ecsdl.org/content/3/36/3.full.pdf > > > > ____________ > From: Michael Ross via EV > To: Jeff Major ; Electric Vehicle Discussion List < > ev@lists.evdl.org> > Sent: Wednesday, April 1, 2015 11:42 AM > Subject: Re: [EVDL] ENERDEL Battery Experiences > >

Re: [EVDL] Temperature rating (Was: ENERDEL Battery Experiences)

The IBT site shows testing to 500 cycles. This is nothing like what is possible. Life Expectancy Minimum ¥ >300 cycles (80% rated capacity) Typical 500 cycles (see graph below) Please watch the video of the lecture at Waterloo: https://www.youtube.com/watch?v=pxP0Cu00sZs On Wed, Apr 1, 2015 a

Re: [EVDL] Temperature rating (Was: ENERDEL Battery Experiences)

Getting horsepower is not the same as long cycle life. You know, I am not making this stuff up. Ignore at your own risk. On Wed, Apr 1, 2015 at 2:42 PM, jerry freedomev via EV wrote: > > Hi Paul and All,Since Bill has more > experience successfully getting the

Re: [EVDL] Temperature rating (Was: ENERDEL Battery Experiences)

"The 104 F (40 C) limit applies somewhat equally to all Li-ion chemistries. The temperature is limited because the electrolyte boils just slightly above that temperature. Same type of electrolyte in all Li-ion chemistries thus the same limit." Hi Bill, With all due respect this is not the failure

Re: [EVDL] ENERDEL Battery Experiences

Jeff, I am not sure why performance at ambient temperatures should make anyone feel confident about a cell. LFP for instance, starts to have serious difficulties at 104°F if it is fully charged. That is certainly ambient here in North Carolina; and that is free air, not boxed up with significant

Re: [EVDL] ENERDEL Battery Experiences

"Hmm, But the problem with these cells seems to be a very short life at elevated temperatures ​" ​Yes, that does seem to have been over looked, and the fact that it is possible to know more and do better. I am sure we can argue about 3000 cycles not being short. And someone mentioned some 50°C

Re: [EVDL] ENERDEL Battery Experiences

3.3V nom)... They > are LiMn2O4 (LMO). Nice batteries. > > Regards, > Stephen > > On Sun, Mar 29, 2015 at 8:58 PM, Michael Ross via EV > wrote: > >> I wonder why their website is so skimpy, given they seem to be legit. Do >> they actually make the cells in the US, or

Re: [EVDL] Making solar work in a conventional vehicle.

most populated places you can't get any wind on them. A tall tower costs. Re geothermal, I was talking about making power not delivering space heat. On Tue, Mar 31, 2015 at 3:52 PM, Lee Hart via EV wrote: > Michael Ross via EV wrote: > >> ​A sail is impractical, unmanageable,

Re: [EVDL] Making solar work in a conventional vehicle.

​A sail is impractical, unmanageable, a very good way to tip over with out a keel or daggerboard. Please do not try this. Pedaling adds almost nothing as most of us have a hard time producing 100Watts continuously.​ Although it is good for you. You may notice that wind energy is only very high u

Re: [EVDL] Making solar work in a conventional vehicle.

We were talking about this a week or two ago. Lawrence will be plugging in, but he is optimistic that this can be minimized. I think he is in the Bay area though, so clouds may be an issue. On Mon, Mar 30, 2015 at 3:29 PM, Ben Goren via EV wrote: > On Mar 30, 2015, at 12:19 PM, Cor van de Wate

Re: [EVDL] ENERDEL Battery Experiences

PM, Jeff Major via EV > wrote: > > Hello EVDL, > > EnerDel makes a great cell and battery here in the USA. I have been to > their factory in the Indianapolis area many times. I use the product just > about every day. I can write more but want to see if this message makes to > thru

Re: [EVDL] ENERDEL Battery Experiences

n, Mar 29, 2015 at 10:31 PM, Jeff Major via EV >> wrote: >> >> Hello EVDL, >> >> EnerDel makes a great cell and battery here in the USA. I have been to >> their factory in the Indianapolis area many times. I use the product just >> about every day. I can writ

Re: [EVDL] ENERDEL Battery Experiences

I have been to > their factory in the Indianapolis area many times. I use the product just > about every day. I can write more but want to see if this message makes to > thru to the board. > Regards, > Jeff Major > > > > On Sunday, March 29, 2015 9:09 PM, HARSHA GODAVARI via E

Re: [EVDL] What kind of lithium batteries have 10,000 cycles

​Lawrence, 1 cycles is possibly doable with any Li ion cell, if you run it right.​ That is the rub, could be you only use 40% of the capacity, or only run it below 30C, or the cycles are really fast. If you pick the right sort of test you can get a long cycle life. So the question is really

Re: [EVDL] ENERDEL Battery Experiences

t; someone in the vicinity can pay them a visit. > > regards > hg > > - Original Message - > > From: "Michael Ross via EV" > To: "Mike" , "Electric Vehicle Discussion List" < > ev@lists.evdl.org> > Sent: Monday, March 30, 2015 12:09:01 AM

Re: [EVDL] ENERDEL Battery Experiences

Mike, Caveat emptor. A US company, but I can't see any information on the website that tells me they have a good cell, modules or packs. It is rather uninformative. I can't tell if they are more than an outlet for a non-US company. To me the most important thing to know is what they cells are

Re: [EVDL] EVLN: BMW & SCHERM Terberg 40-ton Electric-transport-truck

An electric yard dog. I like it. On Sun, Mar 29, 2015 at 8:42 AM, brucedp5 via EV wrote: > > > 'Orange-EV,Kalmar-Ottawa partner> retrofit T-Series terminal-tractors' > > > https://3d-car-shows.com/bmw-group-and-scherm-group-launch-pilot-project-in-munich/ > BMW Group and SCHERM Group launch pil

Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?)

ike it is about 50-80%. > > On March 28, 2015 3:39:15 PM MDT, Michael Ross via EV > wrote: > >Yes. That is pretty much what the best scientists working on it say. > >Keeping it from getting too hot (which may not be all that hot, and I > >have > >not read anythi

Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?)

; -Original Message- > From: EV on behalf of Michael Ross via EV > Sent: Sat 3/28/2015 10:53 AM > To: David Rees; Electric Vehicle Discussion List > Subject: Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & > Critics (?) > > Yes, the rate o

Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?)

Yes, the rate of charge is not a problem, it is being fully charged AND too hot. https://www.youtube.com/watch?v=pxP0Cu00sZs On Sat, Mar 28, 2015 at 2:06 AM, David Rees via EV wrote: > On Fri, Mar 27, 2015 at 5:43 AM, Paul Dove via EV > wrote: > > Well that just verifies what I said. You have

Re: [EVDL] How I purchased a totaled Leaf for the battery pack

I buy at the last 5 seconds manually even for a $50 amplifier. If you bid early you just contribute to the auction mentality encouraging others to think it is more valuable than it is. This also forces you to really know what the item is worth to you, because there will be no means to amend the b

Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?)

I think the main asset of LFP is it takes an extra 100C or so to ignite the electrolyte. They can burn just not as well as others) LFP has some real disadvantages too. It is somewhat more costly to manufacture due to it being necessary to make the positive electrode in an inert atmosphere. LFP

Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?)

WIllie2 and I were having a back channel about this topic. Willie was thinking that LFP had a voltage simnilar to other chemistries. I thought others might want to see this too. Here is what the Handbook of Batteries 4th Ed. says. From Table 26.3 Characteristics of Some Positive Electrode Mate

Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?)

*"I was expecting similar or better performance on the Leaf battery."* As far as I can tell that was an unwarranted assumption. If anything is true, it is certain that LFP are an outlier in behavior to the other chemistries that have Li metal oxide positive electrodes. I heard Jack Rickard claim

Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?)

" ​ I also don't take well to stuff like "the driver would be required to enter their destination," More or less this part of the thread is about how the Leaf has a crap way of reporting remaining range. It is inaccurate. The car or some big computer can't read you mind, so if it is going to mak

Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?)

I won't challenge your ideas of Li ion cell life here, but there is new information. We have gone around that recently on the list. Why Li ion batteries die. by Dr. Jeff Dahn https://www.youtube.com/watch?v=pxP0Cu00sZs Dahn says that cells don't have to die, and I believe him. Rickard (EVTV) thi

Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?)

Yes, the severe problem is in hot climates. So much of Europe is not going to see the issue. Though some may. Put a charged Leaf in a garage on a rock in Greece or Spain, let it heat up good in the summer sun and you will see some deterioration like in AZ. Unless they have made some improvement

Re: [EVDL] EVLN: LEAF EV Pack Reliability Outperforms Cynics & Critics (?)

Does anyone here know if Nissan implemented any technological responses to the failures in southwestern US? Those that are the subject o af lawsuit? All I know about is the test results showing deterioration under high temp and high SOC conditions. Did Nissan make any changes and when? Mike

Re: [EVDL] Article: Electric cars could boost CO2 emissions in some provinces

On Tue, Mar 24, 2015 at 7:09 PM, Ben Goren wrote: > On Mar 24, 2015, at 3:36 PM, Michael Ross via EV > wrote: > > > So which is better? 90% efficient > > for EVs versus 20% efficient for ICE. > > ...and that assumes that EVs are forever stuck with getting their &g

Re: [EVDL] How to build a very efficient EV for road use with solar panels.

Lawrence, I think you will be able to work with bicycle tires. There are some very stout ones and you need strength. Consider: http://www.amazon.com/Maxxis-Hookworm-Urban-Bike-Tire/dp/B0021G9ZIE To bad they don't make 24" tires. 24" wheels will be stronger than 26" Pump up the Hookworms to 1i0ps

Re: [EVDL] Article: Electric cars could boost CO2 emissions in some provinces

I did not see the CO2 output of fossil fuel vehicles included. That would be a telling ommision since cars are only about 20% efficient. The coal plants can burn coal pretty cleanly, but from a CO2 point of view not so good, EVs are far more efficient. So which is better? 90% efficient for EVs v

Re: [EVDL] Seeking Advice: Reusing the battery modules from a Nissan Leaf

I don't know how you would determine ahead of time if a Leaf pack has much capacity remaining. There is a lawsuit out because Nissan did a poor job of pack design where high temperatures are seen. Some packs in hot climates have lost half their capacity in less than 2 years. They needed to have

Re: [EVDL] Who has more info on inventor Bill Todorof?

Prototype cells. not production. Musk always tells people with new cells to send him some so he can test them. No one ever does so, and nothing has shown up able to best Li ion. So he invests billions in Li ion and the people who know the most about them, because he has to get on with it. If I

Re: [EVDL] postal delivery

My mail carrier used to use her personal vehicle (a smoke puking thing I might add). But USPS added on package deliver in recent years as USPS is doing last mile work for UPS, and I think Amazon. She has been driving a multi-stop for some years now. On Sun, Mar 22, 2015 at 12:31 PM, Lee Hart via

Re: [EVDL] [SPAM?] EVLN: Will replacement USPS mail-trucks beElectric?

USPS home delivery delivers far more material in a smaller area than a soda and chip truck, Every home versus every store. On Sat, Mar 21, 2015 at 2:29 PM, Mark Abramowitz via EV wrote: > On Mar 21, 2015, at 11:55 AM, Lee Hart via EV wrote: > > > > Mark Abramowitz via EV wrote: > >> According t

Re: [EVDL] postal delivery

OT, please forgive me. How many Martin Winlow's be there? I just saw a posting on spaceflightnow.com regarding helium and SpaceX rockets by Martin WInlow. It is bordering on a large coincidence to run across the same person out on the interweb. http://spaceflightnow.com/2015/03/21/spacex-swaps-o

Re: [EVDL] [SPAM?] EVLN: Will replacement USPS mail-trucks be Electric?

A hybrid basically, just takes care if idling does it not? The motive power is all ICE unless it is PiH. I don't mean to sniff at that, but just saying. I am in a mostly rural area, but rather dense, and I cannot imagine my carrier exceed the range of a Leaf for example. Here an EV might work

Re: [EVDL] Watch "Malfunctioning meter." on YouTube

If it wasn't for the possibly coincidental sunlight, I would say it looks like an electromechanical voltage regulator in action. A regulator might go as high as 14 and change, and when it stops charging the battery voltage shows and is load dependent - not steady. The change is kind of fast to be

Re: [EVDL] Battery Swap - the stupid idea that wont die...

I think it is different than you say for Tesla. First off, EM really just wants to advance EVs. He knows he can make and lose money beyond our wildest dreams, and he mostly makes money to advance the industries he is trying to change. If can't be done another way, so he makes money. He has a 60

Re: [EVDL] Battery Swap - the stupid idea that wont die...

Is that valuation well deserved? There is a difference between what a business is, and what the market will pay for shares in it. I am more or less quoting Elon Musk when I say it. He is well aware that the number of cars they make is nearly insignificant. And, Tesla can have a bad misstep or tw

Re: [EVDL] Battery Swap - the stupid idea that wont die...

Tesla is hardly a major manufacturer, but others qualify. They do think big though. Maybe someday. On Fri, Mar 13, 2015 at 4:57 PM, Larry Gales via EV wrote: > For both leasing and battery swap to be practical, you don't need to have > all manufacturers adhere to a common standard (though that

Re: [EVDL] Battery Swap - the stupid idea that wont die...

ken the steps toward that > direction with dispelling a lot of their patents. If automotive engineers > can standardize on the components to fill an ICE vehicle why can't it be > done for the EV? > > > > > On Fri, Mar 13, 2015 at 3:36 AM, EVDL Administrator via EV < >

Re: [EVDL] Battery Swap - the stupid idea that wont die...

Dave, It sounds like you haven't seen the video of EM demonstrating the Tesla battery swap. https://www.youtube.com/watch?v=6_XEv2f_Uhw On Thu, Mar 12, 2015 at 8:44 PM, EVDL Administrator via EV < ev@lists.evdl.org> wrote: > As I see it, the model for successful battery exchange in EVs is the lo

Re: [EVDL] EVLN: Tesla-S drivers crying foul, 'Grousing is ludicrous'

Aside from the grousing problem any manufacturer has offering newer models... Part of the trouble for Tesla is their long backlog (a lot of development goes on while you wait). And the other is the high entry cost. Apple or another tech manufacturer can roll out upgrade after upgrade, but there

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