Re: [EVDL] EV Grin doubled

Nice story! New EV’s are almost boring already 😆 No tinkering. Taking older Leaf to -25C and for a longer road trip is a time machine to SLA era. Oh that pain with 30-40 mile range. Not in too distant future we’ll have 1000 mile range EV’s. That’ll provide some more of that EV grin. Interesting

Re: [EVDL] Battery breakthrough?

t; only > reduced. Molecules can always arrange themselves lots of different > ways...good and bad. > > Where is a good source for literature about such things battery related? > (especially Lifepo4 related) > > You'd think this was a highly important subject. > > &

Re: [EVDL] Battery breakthrough?

Solid electrolyte can basically last ”forever”. So this is not actually ”news”. :) Reason why cells go broken today is the liquid electrolyte and passivation layers it needs. Function of time and temperature and voltage. In theory LFP cell with solid, e.g. cellulose, electrolyte can provide milli

[EVDL] Charging payment system costs. Was: BYD Blade

kirjoitti: > On 30 Mar 2021 at 0:56, Jukka Järvinen via EV wrote: > > > The transaction and authorization volume is not there. > > I think that it needs to be as easy to charge an EV as it is to fuel an > ICEV. > > I can't imagine that any ICEV driver would want

Re: [EVDL] BYD Blade

The Blade Battery is a really neat approach to add structural support to the pack and it is a few steps away from what I am doing. :) The new Blade cell dimensions do really help on the mechanical support but it also allows manufacturing methods which are more relaxed. They still do foil coating

Re: [EVDL] BYD Blade

vehicle battery as long as the system is isolated from the grid (in Europe). I bet ERCOT would love to have 20.000 1MWh charging stations with a PPA. That would allow all free charging. 😎 -Jukka ma 29.3.2021 klo 23.37 EVDL Administrator via EV kirjoitti: > On 29 Mar 2021 at 22:46, Jukka Järvinen

Re: [EVDL] BYD Blade

I heard Tesla SC is going to be open in Europe to all cars. I’m not sure if it already has happened. So this might not be true anymore: ”All that being said, Tesla still only lets Teslas charge at Superchargers in Europe even though they use the same plugs as everyone else; other EVs are blocked

Re: [EVDL] List down?

Looks like the discussion is going vivid on other mainstream mediums such as FB. A lot of EV pioneers are spreading the gospel there as common people are asking questions and support. More and more people are getting their first EV experience and there are a lot of questions to answer. Which is sup

Re: [EVDL] Zilla 1141 error - 15mV drop across contactor at 100A

High power demand under acceleration could indicate current leaking to the motor hull and messing up the car chassis ground (?) Brush dust issues have kept me troubled too many times with weird problems. -Jukka to 3. syysk. 2020 klo 13.01 Matt via EV (ev@lists.evdl.org) kirjoitti: > Hi Brains Tr

Re: [EVDL] Orion BMS site

DNS resolves now from here too. :) Darn those GRU cyberwarriors! Tampering my browsing experience... -Jukka ti 18.6.2019 klo 19.11 Gary Krysztopik via EV kirjoitti: > Works for me and they have been very responsive. > > On Tue, Jun 18, 2019 at 2:42 AM Jukka Järvinen via EV > wro

[EVDL] Orion BMS site

Hi all. What's going on with the orionbms.com site? I could not access it. Says it's unreachable. Is this company alive still? I know it's not easy :) -Jukka -- next part -- An HTML attachment was scrubbed... URL:

Re: [EVDL] Large Format Cells vs. Small Format Cells for EVs

Yes. Still few people understand about li-ion. The main thing to understand is there is so many different ways to make them it is quite impossible to know enough to make any general assumptions. There’s maybe less than dozen people in the world who can say anything in general. I can only say I know

Re: [EVDL] Large Format Cells vs. Small Format Cells for EVs

Unknown future problems? What are you referring to? This is well documented failure mode. That is the very reason of having the fuse there. :) It is not due manufacturing defect. Empirical evidence is empirical. One has to see it with own eyes. It does not mean it is in public domain. Most importa

Re: [EVDL] Large Format Cells vs. Small Format Cells for EVs

You're absolutely right. Tesla has hired plenty of talent and they are driving the cost down with vehicle designs. That said they cannot compete in ESS with their existing design. They have now a chance as the grid side compensations are pretty high and investments are paid back in about one year.

Re: [EVDL] Large Format Cells vs. Small Format Cells for EVs

Hi guys. Since tZero the small-cell-paralleling has been driven by costs and the search for benefit of scale. During those days there were not so many ”large” cell format producers and the cost efficiency was not even close to laptop cells. We were even looking in all kind of folding methods and s

Re: [EVDL] Shorai LiFePO4 LFX36L3-BS12 Longevity Reviews

There's so many different ways one can make LiFePO4 cells so it is hard to say what goes with each cell we get. In general and from experiences accumulated so far it is very rarely the case where LFP would die on your hands suddenly. Anything might seem sudden if you're not monitoring the behavior

Re: [EVDL] Tesla battery fire?

Nice! I saw only the videos from the start until the fire persons came to scene. Someone commented the car was completely destroyed. But very good if the design worked as planned. Is there some kind of flame thrower nozzle at the size of the car? (If yes Mad Max points +1) I would still prefer ea

Re: [EVDL] Tesla battery fire?

Most likely an assembly error which slipped through inspections. Loose connections or broken bolts. Anything can and does happen. One can expect Tesla to identify and fix the problem. They've done so every time as far I know. Tesla could put a gap between the car and the battery so one can cool t

Re: [EVDL] EVLN: Ultra-capacitor_li-ion hybrid> crazy-fast 20s charging

The surface area of li-ion electrodes are already on the next level. Only the mechanical design of cells and specifically the current collectors are slowing us down in the development. That'll pass soon. We rather avoid foils as current collectors. So 1990's. We did not understand even 5 years ago

[EVDL] Scalable cabling and charging system from Finland

Hi all dear EVDL friends. Thought you’d all appreciate to know how we solved the home and office charging issues here (Finland). This is probably something quite different what you’ve seen so far. Aim is to have electricity on all parking places with excellent cost efficiency. Actually I think I’v

Re: [EVDL] Self discharge never sleeps (was: Curtis 1238-6501...)

23.29 EVDL Administrator via EV kirjoitti: > On 9 Aug 2017 at 20:18, Jukka Järvinen via EV wrote: > > > This is why SOC windowing was developed. > > Could someone please explain what SOC windowing is and how it works? > Thanks. > > David Roden -

Re: [EVDL] Self discharge never sleeps (was: Curtis 1238-6501...)

This is why SOC windowing was developed. To compensate the 'death rate' among the cells in the pack. Works with high voltage chemistries but with LFP and LTO one must do 'other stuff'. -Jukka ke 9. elokuuta 2017 klo 22.01 Bill Dube via EV kirjoitti: > Self discharge has an _extremely_ strong fu

Re: [EVDL] Electric compressor for EV+Battery heating (heat pump)

What do you consider 'a very cold area in north europe"? Easy advice for batteries: Insulation, insulation, insulation. :) For cabin one can direct charger cooling fan to circulate air over night. Most important is to keep moist out as people tend to cloth themselves during beach weather (-10C)

Re: [EVDL] Anyone interested in 2015 Leaf drivetrain or interior/exterior/suspension parts?

confidential and > proprietary information of Proxim Wireless Corporation. If you received > this message in error, please delete it and notify the sender. Any > unauthorized use, disclosure, distribution, or copying of any part of this > message is prohibited. > > ____

Re: [EVDL] Anyone interested in 2015 Leaf drivetrain or interior/exterior/suspension parts?

eived > this message in error, please delete it and notify the sender. Any > unauthorized use, disclosure, distribution, or copying of any part of this > message is prohibited. > > > > From: Jukka Järvinen [mailto:akkuju...@akkujukka.fi] > Sent: Thursday, January 19, 2017 12:32 AM >

Re: [EVDL] Anyone interested in 2015 Leaf drivetrain or interior/exterior/suspension parts?

How much for the battery enclosure with external connectors? I'll build upgraded pack inside it (60-80kWh). -Jukka to 19. tammikuuta 2017 klo 7.56 Cor van de Water via EV kirjoitti: > I am involved in trouble-shooting a pickup truck that is converted with > > a (2013) Leaf drivetrain. > > Howeve

Re: [EVDL] 2nd life for lithium batteries

Yes. You're right about Edison cells. And the problem is the losses and requirement to flush the cells every 1000 cycles. The losses and flushing makes it 2x more expensive to own and operate compared to say Winston cells. We've done the math extensively and used the real life numbers from vast amo

Re: [EVDL] 2nd life for lithium batteries

Battery manufacturers are vertically integrating their business from raw material production to service (€/MW/MWh fee). We design cells for easy recycling and optimize the cells to provide maximum MW/MWh in and out. This is 10.000bn€ business opportunity as service. Today. Less if just selling cell

Re: [EVDL] 2nd life for lithium batteries

death, but stationary apps > you can treat them well. > > EV battery packs may not be optimal compared to purpose built stationary > packs but they are far from useless. > > Mike Ross > > On Sep 23, 2016 4:43 AM, "Jukka Järvinen" wrote: > > > U

Re: [EVDL] 2nd life for lithium batteries

Usually the internal resistance is growing much faster than the loss of capacity. So if you use the pack in very low power application you will be able to use the pack for some time (several years). This is for LCO, LMO and NMC. Maybe NCA too (cannot say for sure yet as I do not have usage data fro

Re: [EVDL] Which one china lifepo4 60 Ah?

Why NMC/LMO/LCO over LFP on OEM EVs? Due the cell cost. LFP base patents are still valid for few years while others are free game. Sometimes I feel they also wanted to make shitty solutions to prove EVs are no-go. You just got to love how Tesla is wiping floor with those arrogant a*#%¥£es. :) When

[EVDL] Canadian EVDL members

Hi all. I'm pushing one of my startups to Canada. It's about EV charging. I would like to ask all Canadian EV users to help me with some research about the charging infrastructures at home. Specifically outlets and voltages are in interest. Please send me off list some information what kind of

Re: [EVDL] Ground Faults

This leakage issue has to be resolved ASAP. It's pretty serious thing if our cell cases create bridges to chassis. Please send me all data&pictures of these cases. -Jukka President in Europe TSWEG torstai 2. kesäkuuta 2016 Lee Hart via EV kirjoitti: > Cor van de Water via EV wrote: > >> One solu

Re: [EVDL] French man electrocuted while trying to steal petrolfrom an EV> a burning smell was noticed

:D It was funny to us but people who are not so educated about EVs may believe this kind of junk. I've seen laws being prepared on BS like this (or is there other way? :P ). In theory if the vehicle was a conversion with non-steel battery compartment and had unisolated charging procedure on-going

Re: [EVDL] Hotel Chargers

Call the hotel and ask if they have electricity in the building at all. :D Why it has become so hard to get a charge? Everyone on this EVDL know there is no real technical issues with this. Here's a fun detail for you to talk about over EV dinners: We have already close to *two million* charging s

Re: [EVDL] EV Question

1) I think the standards are still a nutty mix and therefore there is no general guide. I think all EV's come with manual which tells thing or two about charging. 2) In general you do not park to any charging post if not charging. It's part of the 'EV code' and a polite thing to do. You adjust you

Re: [EVDL] EVLN: Slower bartender's method crams 0.7% more charge into li-ion

Good news if they have been able to pinpoint and remove accurately their side reactions from their cells. What to do depends greatly what kind of cell it is. Chemistry, particle mechanics, layer thicknesses, age, etc... But in general stuffing anything in anything has to be done with knowledge. All

Re: [EVDL] [SPAM?] Re: EV4Sale: $2500 '02 Focus conversion-EV, needs 144V pack r:40mi ts:75+mph

Elcat's have 72 or 78 volt packs and Curtis controller. There are some pots for adjusting at the side of the controller. I've used 24, 25 and 26 cells in conversions from SLA to LiFePO4. TS 400Ah cells are enough for a small EV like the Elcat is. http://ewww.evalbum.com/4690 http://ewww.evalbum.com

Re: [EVDL] UK grid too weak for 34M EVs (not when we stop pumping gas too!)

I saw one graph which stated the energy usage for oil refining to gasoline. It's stated 23g of CO2 for each driven kilometer just for that part. With our mix on electricity there was 19g of CO2 per kilometer on EV. From this one could derive that producing gasoline solely is already consuming more

Re: [EVDL] A math formula can model li-ion pack aging, Pyrite pack

The elevated temperature for Li-ion performance was known method at NEDRA PIR and Wayland invitationals like 10 yrs back. I was there and I kept telling this what we saw in our cell tests back then. Higher death rate too. NMC cells from TS at that time could be preheated with high current charging

Re: [EVDL] Big-Electric Shocks Big-Oil

Until the stored kWh cost is 1 or 2 c. The grid is much more complex system which has idling cost. Home battery with 20yr life expectancy and $100/kWh price tag is pretty hard to fight. The future might hold home appliance infrastucture which has batteries everywhere. Starting from lights and tooth

Re: [EVDL] Securing your portable L1 EVSE

I have to wonder again how in earth have we survived so many decades without those boxes? How many died or got a shock? Luckily we are getting back to the easy life as the cables will be 'dumb' again... all that smart stuff will be in the car and in the socket. -Jukka 20.10.2015 17.24 "Bill Dube

Re: [EVDL] When testing DriveNow hire service, we IMMEDIATELY crashed their i3 EV

I have a strong feeling Tesla is actually going for this car-as-service route with their Model 3. It might not be even a 'new' car which can be bought. Instead it could be just modified/stripped Model S with autonomous driving. But this is just my guessing as this would be something which I would d

Re: [EVDL] EVLN: The Big EV Debate> Go for Small or Big Battery Pack?

; > Most of what is needed is the perception of fun, and while other car buyers > have different priorities, this is the one that will win out, heavy, light, > armored or exposed. If it seems not-fun; it won't sell. > > Fortunately most EV sales are targeted well at this mark

Re: [EVDL] EVLN: The Big EV Debate> Go for Small or Big Battery Pack?

I think there is an opening for this niche light vehicle market. It just has to be taken with extreme measures. If one could build that economic bullet-shaped Kevlar-Carbonfibre-Ceramic-nano-nano-nanotube car which would prevail on head-on collision with semi-truck... If it's light and beats the s

Re: [EVDL] EVLN: The Big EV Debate> Go for Small or Big Battery Pack?

ore weight hurts > range so it is a vicious cycle of over engineering. 375 miles on 16kw or > 300 miles on 85kw. I will take the lighter alternative...add solar and you > never need plugging in as solar makes sense on light vehiclesnot heavy > ones like we convert. Lawrence Rho

Re: [EVDL] EVLN: The Big EV Debate> Go for Small or Big Battery Pack?

I think it's more important to think how the user benefits from the battery sizing. While it might sound irrational to have 150kWh onboard it would enable stressless driving with longer useful lifetime. The vehicle it self will have better resale value as it remains more usable even after 10 or 15

Re: [EVDL] Bu's e-wheely bad idea> weaving-recklessly the wrongway HT delivery

nformation. > > Sent from my iPhone > > > On Aug 24, 2015, at 1:22 AM, Jukka Järvinen > wrote: > > > > When the comparison is done fair we should look what the electric bike > replaces. We should not compare unaided bicycles to electrically assisted > ones. &g

Re: [EVDL] Bu's e-wheely bad idea> weaving-recklessly the wrongway HT delivery

ycles. They are getting to the broader end of the hockey stick far faster than us. -Jukka 2015-08-23 3:35 GMT+03:00 Mark Abramowitz via EV : > Aren't EV miles *dirtier* for bikes? Don't they mostly use unassisted > bikes? > > Sent from my iPhone > > > On Aug 22, 2015,

Re: [EVDL] Bu's e-wheely bad idea> weaving-recklessly the wrongway HT delivery

I bet this guy did not even know he was doing something wrong. As this is standard procedure on many Chinese cities. :D Most get away without a single scratch as everyone knows bicycles are everywhere. Which is exactly the opposite situation in most US cities. Right? The thing to observe here coul

Re: [EVDL] EVLN: 800kWh Saft Battery for Lochinvar Electrified-Ferry

FYI The 1st two ferries before this was made with cells and battery packs from finnish European Batteries. -Jukka 18.7.2015 11.05 "brucedp5 via EV" kirjoitti: > > > http://insideevs.com/saft-provide-800-kwh-battery-electric-ferry/ > Saft To Provide 800 kWh Battery For Electric Ferry > [201507

Re: [EVDL] EVLN: Tesla's new weapon is a battery scientist @dal.ca

And the most important part of this news was: “I had to be a part of it,” says Dahn. “It’s the next step.” And also the reasoning why he said this. -Jukka http://www.google.com/profiles/jarviju#about 2015-06-24 13:16 GMT+03:00 Michael Ross via EV : > > Yep. > > On Wed, Jun 24, 2015 at 4:25 AM,

Re: [EVDL] EVLN: What if 2011 LEAFs were Retrofitted to 2016 Range?

I wish we could have all interface details so third parties could offer battery upgrades to old Leafs and other OEM cars. Now we just have to hack through vaquely documented protocols and sink more R&D to it. Eventually the packs will be available anyway. I know dozen reason for OEM not to supports

Re: [EVDL] pouch cells

Sounds like LTO cell to me. Not standard LMP or LCO. Maybe some LiFePO4 variant. That spec tells it cycles well which is nice for such use. EV is not one of those applications. Nothing new under the sun I'd say. -Jukka http://www.google.com/profiles/jarviju#about 2015-05-12 5:56 GMT+03:00 Bill Du

Re: [EVDL] self driving cars

Why should automated cars drive as fast as the ones we drive? Perhaps we should think different over this whole transition to driverless future. I think the biggest thing in this is you can do all other things inside the vehicle while in transit. Eat, drink, SMS, update FB, Tweet, etc. All the sam

Re: [EVDL] Cold Charging Lithium Experiences

Bill wrote: "I think it is important to not group all Li-ion in the same basket." And that is the right answer. Ask your cell manufacturer for the specifications. Joggling with the electrolyte mixtures is what people do so you really cannot say anything generic. For sure it's better for the cell

Re: [EVDL] 4 to 12 Cell Lithium BMS

FEVT ltd used latching contactors from Albright. http://www.albrightinternational.com/files/downloads/catalogues/SW80%20ETC%20TELECOM%20LEAFLET.pdf You need to add a latching circuit when operating with low level BMS systems. When BMS keeps the contactor ON/pulled there is very little energy cons

Re: [EVDL] Lithium battery setpoints...

For Winston type cells I recommend to keep them dry and clean and as they are from the factory. Do not use any magic creams to keep the moist out from the poles. One can sand and polish the poles if one wishes but do it right to keep the contact surface good and tight. Battery pack with proper encl

Re: [EVDL] Tesla might Supercharge EVs to regain 400mi in 15min for 7 credits

The range is currently the issue which requires more quick charging stations. But this issue is going away now. More range is going to be on every BEV as the production methods improve for li-ion. Also packaging is getting whole lot better from current cells and packs (talking about active componen

Re: [EVDL] Speaking of General Jack Ripper (and thereby 'How I Learned to Stop Worrying and Love The Bomb')

Maybe they just filled up their tanks and are feeling ill-equipped... 21.5.2014 17.51 kirjoitti "Robert Salem via EV" : > Where do you live ?? > > > On Wed, May 21, 2014 at 10:02 AM, Geoff Pullinger via EV > wrote: > > > Has there been some news story I've missed in the last few weeks? > Perhaps

Re: [EVDL] self-discharge of CALB 180Ah LiFePO4 cells

have reversed some cells on longer trips > and noticed that in the total voltage. > > Regards > Evan > > > On Tue, Apr 22, 2014 at 3:28 PM, Jukka Järvinen wrote: > > > Evan, can you open a bit that 50.000 mile cycles? How shallow or deep > > cycles you take? >

Re: [EVDL] self-discharge of CALB 180Ah LiFePO4 cells

Evan, can you open a bit that 50.000 mile cycles? How shallow or deep cycles you take? "Overcharge" balancing was showcased in China already in 2006 or so. It works but kills cells. Check what yout voltages are at EOC. This would help us to understand your special conditions and success. Also the

Re: [EVDL] self-discharge of CALB 180Ah LiFePO4 cells

The thing is, David, while you are still going strong and not even once measured voltages from the pack during the 18k with a multimeter (naturally you have measured. right?), the BMS-less use is for people who know how to take care of their pack. When a new born EV person reads through all this a

Re: [EVDL] self-discharge of CALB 180Ah LiFePO4 cells

It really boils down to tow facts. 1st: cells are sent away from the production before they have been aged to find out defects. It's considered to be unreasonable practice since it takes a long time and storage space. 2nd: the first formation steps build most of the cell but there is that 5% of und

Re: [EVDL] How can regen be a reason to buy or not? : EVLN: Fiat 500e EV> close to perfect

This regen is two bladed sword. It conserves the brake disks but at least here they stop working properly due rust. Drum brakes would be more than sufficient in front and rear when vehicle has good regen. Disks are overkill (my opinion). So far drums work much better when not used. -Jukka 2014-03

Re: [EVDL] LFP batts, does full voltage mean, full capity

What cells are you using? - Jukka 14.3.2014 5.43 kirjoitti "Peakfoto Digital Photo Still n Video" < k...@peakfoto.com>: > - Original Message - > From: Ben Apollonio [mailto:e...@bapollo.com] > To: ev@lists.evdl.org > Sent: Thu, 13 Mar 2014 20:20:02 -0400 > Subject: Re: [EVDL] LFP batts, do

Re: [EVDL] 18 Wheeler

Wow! Nice job. When you get the cells in the trailer and couple more trailers that's 24/7 EV trucking. :) -Jukka http://www.google.com/profiles/jarviju#about 2014-02-14 17:33 GMT+02:00 Steve Clunn : > We went to a gravel yard that is about 5 miles away and picked up a load > of gravel. The tr

Re: [EVDL] Cold Charging Lithium Experiences

To debate with people about the necessity of thermal encapsulation of batteries. I bring the deal to very simple level so the receiver really takes the analogy. *Li-ion batteries have organic electrolyte. People are organic too. So would you survive without clothes in the -20C?* Ok. One must have

Re: [EVDL] Keeping LiFePO4 battery terminals tight every 10k miles

Well.. The whole pole assembly (in these certain prismatic cells) has been under doubt for a decade now. Some failures but not as much as one would think. Many of you know the foils inside the cell are compressed together and drilled with one or two holes. There are similar holes in the Al or Cu p

Re: [EVDL] Charging Lithium Below Freezing

t; Mike > > > On Mon, Jan 6, 2014 at 4:33 PM, Jukka Järvinen >wrote: > > > It depends on your chemistry. What anode and what mix of electrolyte.You > > may see on the voltage behaviour on charging if your anode has > difficulties > > in absorbing the ions (jit

Re: [EVDL] Charging Lithium Below Freezing

It depends on your chemistry. What anode and what mix of electrolyte.You may see on the voltage behaviour on charging if your anode has difficulties in absorbing the ions (jittering). You can charge in very cold too but this is not universal rule. You really need to know which type of millions of v

Re: [EVDL] Storing / charging LiFePO4

If I build a pack in a project for a customer the cells are at least one year old (prototype packs excluded). After manufacturing and formation they have been transported to storage and charged full. Then stored in cool place for quality control. The SOC is not so important in storing the cells wh

Re: [EVDL] VW Bora will have Protean in-wheel motors

Do we have actual facts on the Model S motor setup? I was really curious about the Model S tech video where the Tesla engineer taps on the other bucket and says this is the motor and then he taps on the other bucket ans says this is the power electronics. so is it one motor, reduction gearbox with

Re: [EVDL] EVLN: Why ARPA-E’s programs, RANGE, BEEST, AMPED ... Matter

Umm.. What? Looking the Arpa-E (btw.. 'Arpa' is 'a lottery ticket' in Finnish :P ) project list I start wondering if they already did solve all other issues remaining regarding the batteries. The car body is the protective component which should provide shelter for occupants and fragile technolog

Re: [EVDL] Looking for a Leaf battery pack.

Anyone have worn off or broken Leaf battery pack for sale? Contact me off-list. Thinking of upgraded and refurbished packs (more capacity). -Jukka http://www.google.com/profiles/jarviju#about 2013/12/17 fotajoye > There are Leafs that need to replace their packs. One fellow has 100,000 >

Re: [EVDL] EVLN: EV owner charged w/ stealing $0.05 worth ofjuice(video)

In here if anyone wishes to claim for "damages" one has to prove the actual damage and cost. It's not crime to connect a plug. It migt be a crime to pull 30kW out of that standard socket but that would be considered as '100ms quick charge'. Who defined the stolen amout of electrons in the article

Re: [EVDL] Li-ion life (WAS: Range)

So far most li-ion chemistries with organic electrolytes start dying right after the formation process in the factory. What ever you do by using the cells is just killing them faster. Elevated heat is the most biggest issue with the laptops. Not the voltage. If it would be the voltage *all* the la

Re: [EVDL] EVLN: Pack prices likely to plummet, halve the cost within 6yrs

2013/10/5 Martin WINLOW > I was afraid someone would ask me that. I have had a look (in > anticipation) in my 'Sent' folder and it is not there any longer. I > suppose its on the EVDL somewhere. > > I did have a quick look at the cost of the Cu and Al content for a US$210 > 160Ah LiFePO4 cell

Re: [EVDL] EVLN: Pack prices likely to plummet, halve the cost within 6yrs

current (again...no foils). -Jukka 2013/10/2 Peri Hartman > Seriously, Jukka, you've just made a new format cell? Do you have any > performance numbers on it yet? Cool! > > -Original Message- > From: ev-boun...@lists.evdl.org [mailto:ev-boun...@lists.evdl.org] On

Re: [EVDL] EVLN: Pack prices likely to plummet, halve the cost within 6yrs

Bruce: "There are many of these pontificating pieces, that I usually pass on, as they seem to all talk, talk, & talk about the future, and not much tangible meat to make what they say viable." I have found it pretty weird that all everyone is doing is just develop 'new things'. Not with the old th

Re: [EVDL] dead cells

There`s a company in Finland at least (Akkuser Ltd) which grinds the cells to dust and separate the processed cells with several ways. From li-ions mostly the copper and cobalt is reused. Lithium is just `land fill`. TS-type prismatic cells have been processed this way on several patches with good

Re: [EVDL] Fw: new EV job

I wasn't saying it was your fault, David. :) You wasn't there then. Winston is a good man with wild ideas how to improve world for all of us. He's far from greedy Chinese bastard. Wanted just to clear that since at least to me he has honored warranties far better than many western companies have.

Re: [EVDL] Fw: new EV job

I should say 'I told you so'. :P This was well known issue already 8 years ago. We had conversations about it in EVDL and also directly with companies who were considering to use the cells this way. Plenty of meetings in UK too during several excursions. So I do not think it's Winston's fault peo

Re: [EVDL] Battery video

2013/6/25 Hoegberg . > > > > From: jarv...@gmail.com > > Date: Tue, 25 Jun 2013 02:21:14 +0300 > > To: ev@lists.evdl.org > > Subject: Re: [EVDL] Battery video > > > > Exactly John. > > > > The Schuko -socket is enough but it was voted among vehicle manufacturers > > that the for example Defa-prod

Re: [EVDL] EVLN: $100/mo Leaf Battery Replacement Plan

sive 'air cooled' pack design). Throwing another pack > in there (Nissan's or aftermarket), is just going to have the same loss > of capacity issues unless the proper steps are taken to reduce that ... > (right?). > > > {brucedp.150m.com} > > > > - > On Tue

Re: [EVDL] EVLN: $100/mo Leaf Battery Replacement Plan

It would be fun business to provide superior upgrades to Leaf and others as a unauthorized rogue provider :D "We're just fixing the obviously bad engineering" -akkuJukka http://www.google.com/profiles/jarviju#about 2013/6/25 Peri Hartman > Hmm. My mistake. > > But someone said recently that

Re: [EVDL] Battery video

Exactly John. The Schuko -socket is enough but it was voted among vehicle manufacturers that the for example Defa-products are lethal. The death rate is astonishing to use these Schuko-sockets out doors. The statistics speaks it out: over 15.000.000.000 disconnect/connect actions during the past

Re: [EVDL] Battery video

I watched it forward from the time stamp given (14:55). Nice video and many things told. About Li-ion. I liked the part where the narrator actually measured the box in centimeters :D That battery box was about par with NiCad. Then he moves to explain the problems of the chemistry. (what?) As i

Re: [EVDL] EVLN: Tesla Parades EV Battery Swap Technology

Trailers are just fine but for example in here (Finland) it limits the allowed top speed of the vehicle. At highway 120 km/h becomes 80km/h for a standard passenger car. Surely it increases range with added capacity and low speed but people do not think that way. I would not mind about pulling the

Re: [EVDL] EVLN: Tesla Parades EV Battery Swap Technology

The battery cells are not that big issue in the Tesla packs. Tesla will not pay more than $100/kWh for their cells in the near future. Just to give some idea: One bought 20.000 kg of LiFePO4 cells in 2004 (~$300/kWh). They contain 23% of pretty pure copper. That's 4,6 tons of it. It cost in 2004

Re: [EVDL] EVLN: Tesla Parades EV Battery Swap Technology

sorry if i was not clearly enough sarcastic. I should have said Foolcells. I just wanted to point out one good argument for all lobbyists to support Tesla and Elon. Clever move from them. -akkuJukka 2013/6/22, Martin WINLOW : > Jsl, > > I'm afraid the issues you mention are only the most obvious..

Re: [EVDL] EVLN: Tesla Parades EV Battery Swap Technology

Marcus, I believe you're on the right path with your thinking. With the quickly swappable battery pack a car owner can choose which kind of battery to rent/lease/buy. Even changing ones mind would be effortless. Click and go. We will see different chemistries and battery technologies that can be

Re: [EVDL] Resistance Jack Rickard of EVTV.me

The Wh losses generate more heat in then cell which breaks the electrolyte and operation of active particles. When particles loose their ability to release and capture Li-ion's Ah's are lost. Creating imbalances further since power capability is related to parallel operation of active particles. W

Re: [EVDL] Better Place bankruptcy

Bruce, while the battery swapping might seem to be full of issues, there is some good trade offs too. I looked in to this quite deeply. I had one company (R.I.P.) doing that for EV buses. :D When the battery pack is easily swappable the questions of having issues with the batteries go away. Why

Re: [EVDL] banding lfp cells

varying inner resistance across the cell structure. -Jukka http://www.google.com/profiles/jarviju#about 2013/4/23 jerry > Round cells will not swell, so they can eexpected to work better and > longer. > > Jerry > > Jukka Järvinen 编写： > > >Simply because the cell

Re: [EVDL] banding lfp cells

Simply because the cell casings is made just enough thick to keep all stuff inside. The additional mechanics just compensate that. These cells do not have vacuum inside. I've seen pouch cells installed in the pastic enclosure. Those should get away with loose installation. Would you like to have 2

Re: [EVDL] LiFePO4 Characteristics

LiFePO4 cells from ThunderSky (2005) seem to have good calendar life. Temperature seems to have more effect than cycling. Even if charged up to 100% (4.25v). But all is changed now since the old white ones are quite different from the new yellow ones. The old white works better in cold climate. I

Re: [EVDL] LiFePO4 float charging

Generalization is bad, bad thing. NASA used Cobalt or Manganese cathodes ? 100% SOC effect is not even closely as strong in LiFePO4 than in others. I took some cells from storage last summer that were made in 2004-2005. Some of them had been charged or cycled only once since manufacturing. LFP's

Re: [EVDL] Tesla...lost how much charge overnight? 25%??? 60 miles??

I was thinking on adding to the CCS system a function that would basically prevent on running too fast or aggressively. You set the point in the navigator where you are going and the system calculates the average requirements to get there. According the speed limits and elevations. In that mode you

Re: [EVDL] NY Times slaps down Tesla S

eh.. next thing we'll see is the slander about the 'spying big brother Tesla' that can track you if you're speeding. Maybe NYT was asked to dig this thing out in the 1st place. -Jukka 2013/2/14 Bruce EVangel Parmenter : > I added the URLs (below) of the graphics/charts for archival purposes. > >

  1   2   >