Search found 949 matches

by okashira
Jul 13 2018 9:57pm
Forum: Items for Sale - New
Topic: Brand New 120100 25kw motor! NSK bearings!
Replies: 2
Views: 471

Re: Brand New 120100 25kw motor! NSK bearings!

Where did you get this motor?
I have only seen it on Alibaba.
by okashira
May 20 2018 10:19pm
Forum: Battery Technology
Topic: Genuine A123 AMP20 Module!
Replies: 17
Views: 1917

Re: Genuine A123 AMP20 Module!

As I can see from Okashira pictures his cells are 2013. I have like 30 such cells sitting in my basement for over 5 years, they are all still above 3.2 V . removing cells from modules can be a pain with terminals welded but unlike in Nissan Leaf modules, A123 cells are not glued together. Mine were...
by okashira
May 20 2018 10:18pm
Forum: Battery Technology
Topic: Model 3 battery cell specs
Replies: 19
Views: 1092

Re: Model 3 battery cell specs

I would love for you to be right. Awesome hotroding potential. Based on some more speculative estimates on my part, the Model 3 pack is probably capable of more power then even the P100D pack. Perhaps as much as 650kW in short bursts. Cells are up for it. Bondwires, contactors, connectors, couldn't...
by okashira
May 20 2018 10:16pm
Forum: Battery Technology
Topic: Model 3 battery cell specs
Replies: 19
Views: 1092

Re: Model 3 battery cell specs

neptronix wrote:
May 15 2018 7:39am
I read a report that indicated they were somewhere between 300 and 333whrs/kg.
If that's true, i wonder what we're all doing with these lower density cells laying around.
The gravimetric energy density is actually slightly worse then the NCR18650GA
by okashira
May 14 2018 11:03pm
Forum: Battery Technology
Topic: Model 3 battery cell specs
Replies: 19
Views: 1092

Re: Model 3 battery cell specs

is the internal resistance already known? love to see discharge curves with temperatures. i am really interested how cool the cell can stay without active cooling. and more importantly: what are they going to cost if they hit the market... I suspect ~.00045 ohm per group or 0.043 ohm for the whole ...
by okashira
May 13 2018 4:10pm
Forum: Battery Technology
Topic: Model 3 battery cell specs
Replies: 19
Views: 1092

Re: Model 3 battery cell specs

Based on some more speculative estimates on my part, the Model 3 pack is probably capable of more power then even the P100D pack. Perhaps as much as 650kW in short bursts.
by okashira
May 13 2018 4:05pm
Forum: Battery Technology
Topic: Model 3 battery cell specs
Replies: 19
Views: 1092

Model 3 battery cell specs

I thought I'd share what I have learned so far of the Model 3 cells. Made by Panasonic in the USA (duh) 21700 form factor. 21mm diameter and 70mm length. 4.8Ah nominal. 3.65V nominal. Reduced cobalt and increased manganese in the cathode compared to previous generation Silicone in the anode like the...
by okashira
Apr 05 2018 8:47pm
Forum: Battery Technology
Topic: Is regen still possible with this kind of bms?
Replies: 12
Views: 483

Re: Is regen still possible with this kind of bms?

Yes, regen is possible, in fact, the BMS won't be able to stop it even if the cells go over voltage. That's the issue here. With a single port BMS, the regen would get cut off if the cells went over. With a two port BMS only the charge port turns off for over voltage. About the only way this would ...
by okashira
Feb 14 2018 1:40pm
Forum: E-Vehicles General Discussion
Topic: The BEST connectors, period
Replies: 14
Views: 3027

Re: The BEST connectors, period

cwah wrote:
Apr 04 2017 2:35am
Waiting for it. Needs to be waterproof
MX150's are nice. Tesla uses them extensively.
The hand crimper is reasonably priced and there are a massive selection of contacts and housings.
by okashira
Feb 14 2018 1:38pm
Forum: Alternative Energy
Topic: EV Investing?
Replies: 5
Views: 504

Re: EV Investing?

I know a couple of startups... you can contact me
by okashira
Feb 12 2018 3:55pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 460
Views: 54664

Re: kWeld - "Next level" DIY battery spot welder

I just ordered one for some testing. :-)
How soon will it ship?
by okashira
Dec 19 2017 11:47pm
Forum: Battery Technology
Topic: Ultrasonic tab welding
Replies: 29
Views: 1907

Re: Ultrasonic tab welding

Are you going to be using it long term? How is it working out?
by okashira
Dec 19 2017 7:40pm
Forum: Items for Sale - Used
Topic: FS: Tesla Model S 18650 cells! Welded Packs! Panasonic; NCA
Replies: 556
Views: 80610

Re: FS: Tesla Model S 18650 cells! Welded Packs! Panasonic; NCA

Just found this thread in my search for recycled Tesla cells. It's a great service you are doing for the ebike community. I am really curious to see the differences between the 3.1 Ah and 3.4 Ah cells. I would assume that the IR is higher in the higher capacity cells. Anyway, a pack like this seems...
by okashira
Nov 19 2017 3:12am
Forum: E-Vehicles General Discussion
Topic: Could someone help me figure out this HONDA BMS?
Replies: 1
Views: 529

Re: Could someone help me figure out this HONDA BMS?

How did you get this car. They were supposed to be destroyed./ Recycled.
I want that pack. :D
by okashira
Nov 19 2017 3:03am
Forum: E-Vehicles General Discussion
Topic: New Tesla Roadster amazing 1.9 seconds 0-60 and semi 5 seconds 0-60!
Replies: 20
Views: 1820

Re: New Tesla Roadster amazing 1.9 seconds zero to sixty! Dragtime video

200kwh in the roadster gets huge omgwtfbbq from me. Woulda been cool if they went with 140kwh and higher power cells and took off 200lb weight But I guess they wanna use all the same cells model 3 and roadster and model s. 200kwh is just over kill lol Even with the high density cells the pack on the...
by okashira
Nov 11 2017 10:04pm
Forum: Large EV General Discussion
Topic: Azure Dynamics Transport Connect - I have one
Replies: 16
Views: 1973

Re: Azure Dynamics Transport Connect - I have one

Hi methods, I just saw your post - I have an AZD Transit Connect as well. It is not running. Appears to be a problem with the charging process. At the moment I am flying blind. I have a Kvaser CAN interface but I don't have all the AZD software. I downloaded the drivers from the link at EVTV site, ...
by okashira
Oct 17 2017 9:02am
Forum: Items for Sale - Used
Topic: FS: Tesla Model S 18650 cells! Welded Packs! Panasonic; NCA
Replies: 556
Views: 80610

Re: FS: Tesla Model S 18650 cells! Welded Packs! Panasonic;

peleap wrote:i order 14 pcs sent pm
Cannot ship small orders overseas
by okashira
Oct 10 2017 2:17am
Forum: Items for Sale - Used
Topic: FS: Tesla Model S 18650 cells! Welded Packs! Panasonic; NCA
Replies: 556
Views: 80610

Re: FS: Tesla Model S 18650 cells! Welded Packs! Panasonic;

Hi! I would need two packs of made from tesla cells. Pack 1: 20s 8p - 160 cells Pack 2 20 5p - 100 cells What would be total cost shipped to Finland? The packs would need to be crated, shipped via sea freight - and you would need to pick up at your local port. Cost for shipping would be on the orde...
by okashira
Oct 01 2017 9:56pm
Forum: Items for Sale - New
Topic: JP spot welder
Replies: 1122
Views: 137415

Re: JP spot welder

Finally!! Lol
by okashira
Aug 30 2017 1:48pm
Forum: Items for Sale - Used
Topic: FS: Tesla Model S 18650 cells! Welded Packs! Panasonic; NCA
Replies: 556
Views: 80610

Re: FS: Tesla Model S 18650 cells! Welded Packs! Panasonic;

We have a huge improvement in custom pack quality on the way. We've built an industrial quality 3d printer and here is a peek at new cell holders and an early case design.. The material is Nylon 6/6, right off the printer. It will be even tougher after it's aged (absorbed moisture to equilibrium). ...
by okashira
Aug 21 2017 1:57pm
Forum: Items for Sale - Used
Topic: FS: Tesla Model S 18650 cells! Welded Packs! Panasonic; NCA
Replies: 556
Views: 80610

Re: FS: Tesla Model S 18650 cells! Welded Packs! Panasonic;

We have a huge improvement in custom pack quality on the way. We've built an industrial quality 3d printer and here is a peek at new cell holders and an early case design.. The material is Nylon 6/6, right off the printer. It will be even tougher after it's aged (absorbed moisture to equilibrium). T...
by okashira
Aug 17 2017 6:12pm
Forum: Battery Technology
Topic: Sanyo NCR20700B 4250mAh cell is here!
Replies: 57
Views: 11803

Re: Sanyo NCR20700B 4250mAh cell is here!

Well there is also the NCR20700A, lower 3200 mAh but higher C rate. Didn't know this, that's GOLD ! http://lygte-info.dk/review/batteries2012/Sanyo%20NCR20700A%203100mAh%20(Red)%20UK.html At maximum rated current they are up to 81°C 30A at only 81°C , what is the magic trick behind this ? http://ly...
by okashira
Aug 08 2017 10:09am
Forum: Battery Technology
Topic: 18650 pack to jump start a small car...
Replies: 30
Views: 3090

Re: 18650 pack to jump start a small car...

Started a 5L V8 with a 7p4s pack of Tesla cells (no lead acid - disconnected) easily....