Search found 415 matches

by Cephalotus
Apr 25, 2018 11:53 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

The point is that you can have cell with 15 years and 5000 full cycles lifetime based on almost all known chemistries, but not with the high energy density. NCA, NMC, LFP and even LCO can be designed for this conditions but the volumetric density will be 350 Wh/l at best. If you need 700 Wh/l or mo...
by Cephalotus
Apr 25, 2018 11:49 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

Right. In the Leaf we were talking about large format NMC cells. Yes the leaf cells had a Problem with high temperatures. One or a few bad examples are no proof that the Claim is wrong. A PV modul lasts 30 years+, but there have been moduls around that got defective after 1 year. So what? You might...
by Cephalotus
Apr 25, 2018 6:51 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

It could be now that Elon has hands on the details of 21700 cell manufacturing that it could be this special release 200KWh roaster will have especially expensive lithium cells that have more cobalt etc in them then is typically considered financially viable, thus giving them super performance. My ...
by Cephalotus
Apr 25, 2018 6:27 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

A modern battery cell will last 2.000 to 5.000 full cycles. Li-ion batteries last 500 full cycles, 1000 if you baby them. A NMC 333 automotive quality cell should last around 15 years and 5.000 cycles. Cycle life performance in NMC 622, NMC 811 and NCA is reduced, as far as I know. NCA has good cal...
by Cephalotus
Apr 24, 2018 1:50 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

.....It is bad because a 200kWh battery will weight 700kg+ ...... :shock: :?: Tesla's 100kWh pack already weighs 650 kg !!s. I included future improvements. obviously adding a 1300kg 200kWh battery to a "sports car" would sound even more nonsense to me. Maybe Musk builds to many rockets to get a bi...
by Cephalotus
Apr 23, 2018 7:38 pm
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

A blanket statement saying that 200kwh in a single car battery is bad for the environment has no meaning as we don't know the production process of said future battery. If it's made at a solar power gigafactory than it might be 100% environmentaly friendly. It is bad because a 200kWh battery will w...
by Cephalotus
Apr 22, 2018 3:02 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

Tesla superchargers are working fine! I had a model S for the winter and I know many people with Model S and X's they have no charging problems to speak of. IN fact they have raised the Supercharger to 135kw in some places. In time that will go even higher. Like when the 200kwh Model S comes to mar...
by Cephalotus
Apr 22, 2018 2:37 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

It is surprising that Telsa is moving to rare earth magnets, this is not good for mass production or green manufacturing. The only reason is to increase the range slightly, at a considerable cost and reduction in "green value" for a vehicle that is supposed to be green. Rare Earth are not "rare"......
by Cephalotus
Apr 22, 2018 2:32 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

Would be interesting to see how German subsidies support those prices. There is only subsidies for the end consumer and this is not included in the selling price and independent of the manufacturer. But I do include all peripheral components plus installation cost in the price. One factor of the Te...
by Cephalotus
Apr 21, 2018 3:04 pm
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

When 1 cell shorts in a Tesla pack it blows the fuse and the 1 single cell is no longer part of the pack. With modern cell production failure rate of cells should be less than 1 in 1 million. There are different kind of internal shorts in a cell. In most cases its not aa "zero Ohm" shortage, but a ...
by Cephalotus
Apr 21, 2018 12:33 pm
Forum: Alternative Energy
Topic: Biomass to Fuel?
Replies: 13
Views: 128

Re: Biomass to Fuel?

If you use 1 ha photovoltaik you can get 50-100 times more driving distance with an BEV compared to the biofuels you get out of 1ha used in a car with combustion engine.

In a world with unlimited resources biofuels would be an option.

On planet Earth they could be an interim solution for airplanes.
by Cephalotus
Apr 21, 2018 10:58 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

Cost of the Powerwall. It has the lowest $/kwhr of any lithium based home power storage system. (And uses the same technology/assembly methods as their EV batteries.) In Germany battery systems from BYD, LG or Sonnen (for example) are cheaper (and most likely better) than a Powerwall II. Tesla uses...
by Cephalotus
Apr 21, 2018 10:40 am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1865
Views: 50464

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Scientific understanding on absorption of CO2 is higher than scientific understanding on gravitation.

So I assume you also don't "believe in gravitation", do you?
by Cephalotus
Apr 20, 2018 10:08 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

I laugh already now about my own folks from Germany. Thats such a pitty, but I think we Germans are way too far away from Tesla to catch up. They have 0 experience with electric cars, even tho they won´t be that hard to produce. Mercedes for example already buys engines from Tesla (yeah, they have ...
by Cephalotus
Apr 19, 2018 4:24 pm
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

I see the biggest challenge to Tesla being the existing large ICE car manufacturers. Now the EV drivetrain is become mature and components & systems being offered by OEMs, it's becoming easier for them to nail together an effective EV and leverage their considerable existing manufacturing experienc...
by Cephalotus
Apr 19, 2018 4:16 pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1865
Views: 50464

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Such precise figures..... You make it sound like its a proven scientific fact.. .....which of course it is not....purely unscientific scaremoungering. :roll: 10% means around 1/10th. Can be 8,7% or 11,2%. It doesn't matter. Our main energy problem is NOT a lack of fossil fuels to burn. Germany is n...
by Cephalotus
Apr 19, 2018 6:48 am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1865
Views: 50464

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Humans after fossil fuel... "After" burning all fossil fuels, the atmopshere of planet Earth will have changed so much that it is very unlikely to support 9-10 billions of Homo sapiens. For +2K we are "allowed" to burn less than 1/10th of the existing known(!) fossil fuel reserves, burning 20% of i...
by Cephalotus
Apr 19, 2018 6:39 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

I have no doubt Tesla is a stressful place to work, given what they're trying to achieve that's pretty obvious.... They will still get there. The current shutdown is one of many iterative improvements to the production process. I think that it was great what Tesla has achieved. beleiving in traditi...
by Cephalotus
Apr 19, 2018 3:45 am
Forum: EV Business World
Topic: Tesla Model 3
Replies: 350
Views: 18385

Re: Tesla Model 3

DasDouble wrote:
Apr 18, 2018 10:43 am
I would love to work for Tesla Germany...
Well, German car industry usually offers 35h/week jobs with 30 days (6 weeks) of paid holiday :-)

On the other hand German car industry does take its time to introduce new models.
by Cephalotus
Apr 18, 2018 2:31 pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1865
Views: 50464

Re: Wind and Solar vs Coal, Gasoline, Nuclear

You like car analogies. It's like you've taken the sticker price of a new car and assumed that's all you will ever have to pay to run it until it needs scrapping :lol: And because the car has a "capacity factor" of just 1% (using an average of 2kW from its 200kW engine) the "true cost" of his car i...
by Cephalotus
Apr 18, 2018 2:30 pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1865
Views: 50464

Re: Wind and Solar vs Coal, Gasoline, Nuclear

France electricity grid highly depends on foreign countries to stabilize it (Germany can live without France, France can't live without Germany for grid Stabilisation) ??? While France is a net exporter of electricity whe looking for the entire year it is not able to produce its peak demand during ...
by Cephalotus
Apr 18, 2018 7:15 am
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 1865
Views: 50464

Re: Wind and Solar vs Coal, Gasoline, Nuclear

I am fine with coal or standard regular HELE coal which filters out everything but pure co2 and does it 25% more efficiently than a standard coal power-station, but I am also happy to go nuclear so all the politics and corruption over renewable energy subsidy money is completely destroyed, its all ...
by Cephalotus
Apr 16, 2018 11:57 am
Forum: E-Vehicles General Discussion
Topic: Titanium bikes set to get cheaper?
Replies: 12
Views: 205

Re: Titanium bikes set to get cheaper?

Look at the outdoor market. Titanium products are now made almost exclusivly in China (except Japan and I'm not 100% sure if they still have a production) Quality now is the same, price 20-30%. Now the western world even lost the capabilities to match the Chinese quality. If you wnat a cheap titaniu...
by Cephalotus
Apr 16, 2018 5:50 am
Forum: Battery Technology
Topic: Cycle Life tests or experience with Panasonic NCR18650GA vs LG MJ1 vs Samsung INR18650-35E
Replies: 26
Views: 587

Re: Cycle Life tests or experience with Panasonic NCR18650GA vs LG MJ1 vs Samsung INR18650-35E

NCR is the "bussines name" used by Panasonic for their cell production line. The base chemistry principle (cathode active material) is known as NCA which is shortcut for – Lithium Nickel Cobalt Aluminium Oxide (LiNiCoAlO2). So NCR chemistry principle does not exist. Yes. NCR = Panasonic internal sh...
by Cephalotus
Apr 16, 2018 5:46 am
Forum: Battery Technology
Topic: Cycle Life tests or experience with Panasonic NCR18650GA vs LG MJ1 vs Samsung INR18650-35E
Replies: 26
Views: 587

Re: Cycle Life tests or experience with Panasonic NCR18650GA vs LG MJ1 vs Samsung INR18650-35E

It is hard to answer even if i have all three cells measured for their cycle life. When you plan to use only 50% DoD average,... Why buy a 3500mAh cell if you only use 1750mAh? the only way is to go with NCA chemistry cells and so Sanyo GA. Imho the cycle degradations main factor is the silicone in...