TheBeastie
1 MW
The thing I dont get with Tesla going Panasonic is that from the tests that a guy was doing here on ES the Jap cells were crap and the Korean LG/Samsung cells were heaps better.
Tesla Buys Nearly 2 Billion Panasonic Cells
- Thread starter myzter
- Start date
ricklearned
100 mW
Tesla has modified th chemistry and one can't make the same comparison with cells purchased in the market. Only the form factor is the same.TheBeastie said:
liveforphysics
100 TW
ricklearned said:
The modern Panasonic NCA cells are as good or better than anything.
ricklearned
100 mW
liveforphysics said:
No doubt the Panasonics cells are good, but unless you are comparing them to cells out of a Tesla that statement has no value to me.
liveforphysics
100 TW
TheBeastie said:
It took me 4 tries of just ordering Panasonic's older PD cells before I finally got legit ones. There are way more knock offs out there for sale than legit cells. Impossible to tell a well done fake from genuine from appearance.
I'd like to see them take like a billion of those cells and put them in series end to end in a large circle until the ends get close enough to arc. How far can 4.2 billion volts jump? 
liveforphysics
100 TW
fechter said:I'd like to see them take like a billion of those cells and put them in series end to end in a large circle until the ends get close enough to arc. How far can 4.2 billion volts jump?
Tesla said once you gain the potential to contact the ionosphere, you get your arc capable of reaching anywhere on the earth. I would assume 4.2BV would be more than adequate.
Ykick
1 GW
liveforphysics said:fechter said:I'd like to see them take like a billion of those cells and put them in series end to end in a large circle until the ends get close enough to arc. How far can 4.2 billion volts jump?
Tesla said once you gain the potential to contact the ionosphere, you get your arc capable of reaching anywhere on the earth. I would assume 4.2BV would be more than adequate.
OMFG, that's well worth reading again and again...
nutnspecial
10 MW
Thinking a little further, a single lightning bolt is thought possible to contain over 1 billion volts and several billion watts, although I'm pretty sure that must be a guess?
Here's some really informative facts and Q&A from a few sources:
http://www.aharfield.co.uk/lightning-protection-services/about-lightning
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/lightning2.html
http://www.nssl.noaa.gov/education/svrwx101/lightning/faq/
Also some wild documentation-
https://www.youtube.com/watch?v=RfgkFyEWQaY
https://www.youtube.com/watch?v=Wi6kIpqmuak
Here's some really informative facts and Q&A from a few sources:
http://www.aharfield.co.uk/lightning-protection-services/about-lightning
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/lightning2.html
http://www.nssl.noaa.gov/education/svrwx101/lightning/faq/
Also some wild documentation-
https://www.youtube.com/watch?v=RfgkFyEWQaY
https://www.youtube.com/watch?v=Wi6kIpqmuak
fechter said:I'd like to see them take like a billion of those cells and put them in series end to end in a large circle until the ends get close enough to arc. How far can 4.2 billion volts jump?
The dielectric strength of air is 3.0MV/m so 4.2GV could jump a gap of 1400m (nearly a mile).