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  1. #106
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    BYD sells a lot of electric cars in Europe so they must meet some reasonable set of safety standards. Pretty sure they have been outselling Tesla for the last year or so for whatever that means. They are a more basic and less expensive auto so that just might be what the consumers need.

  2. #107
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    Quote Originally Posted by BarryStrawn View Post
    BYD sells a lot of electric cars in Europe so they must meet some reasonable set of safety standards. Pretty sure they have been outselling Tesla for the last year or so for whatever that means. They are a more basic and less expensive auto so that just might be what the consumers need.
    True, but a little perspective... BYD is often cited on the BEV fanboi sites as being ground breakers in solid state batteries (didn't Cudes say that they are already operating 750 mile ranges all over China or something like that?), and battery tech in general. So it's worth clarifying that these are NOT solid state battery cars or even some kind of super tightly packed, 350Wh/kg lithium ion, either. They are what you say the are: more basic and less expensive.

    ***

    Quote Originally Posted by CUDA View Post
    Energy density

    Early 1990s: Commercial lithium-ion batteries had an energy density of approximately 100–120 Wh/kg.
    Today: State-of-the-art lithium-ion cells can reach 250–300 Wh/kg. Some researchers have even achieved experimental energy densities over 700 Wh/kg.
    So Cudes, I don’t know where you cut and pasted these figures from, but we might as well take this opportunity to straighten out some commonly misused and misunderstood terminology.

    The units energy over mass, such as Wh/kg are NOT “energy density”. In physics and engineering, units of energy over mass, such as Wh/kg, are specific energy, not “energy density”. For energy density, think of it like regular density. Regular density like you learn in primary school, (or do Americans learn it in secondary school?), is mass over volume. So energy density properly understood and used, would be something like Wh/cubic meter or cubic centimetre or such.

    Armed with the his knowledge, when you read from sources that misuse or misunderstand energy density and confuse it with specific energy, you should approach everything else you learn from that site with a critical eye.

    HTH


    -Peter
    Last edited by pcrussell50; 09-05-2025 at 09:43 AM.
    "padded wonder"
    __________
    the wet:
    18’ Bahner bow rider, 2.4/200

    Hydrostream Viper, 140 v4 crossflow, some Raker props
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    and a handful of clunkers

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  4. #108
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  5. #109
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    Quote Originally Posted by CUDA View Post
    Peter, I'm going to try and get in contact with my childhood friend, he graduated 3rd in his electrical engineering class from U Buffalo, then achieved his masters, last he told me he was working for Boeing near Seattle WA, I'm sure he's retired by now …
    Sure Cudes, mate. The more the merrier. One of the biggest issues in the BEV movement, is ignorance fueled by hype. The more people who know enough to see through the hype and share a little grounding, the more realistic our expectations for battery boating will be.

    -Peter
    Last edited by pcrussell50; 09-07-2025 at 10:51 AM. Reason: Shortened cut out some repetitive stuff
    "padded wonder"
    __________
    the wet:
    18’ Bahner bow rider, 2.4/200

    Hydrostream Viper, 140 v4 crossflow, some Raker props
    16' Baja/Tahiti/Sidewinder clone, 135 v4 crossflow
    17' boston whaler alert, 90 merc fourstroke
    13' boston whaler, 40hp yamaha

    the dry:
    2003 bmw ///M5
    1993 mustang/griggs racing road race car
    and a handful of clunkers

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  7. #110
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    Wound up tighter than a cuckoo-cuckoo clock...

    83 V-King, 96 Mariner, ff block 2.5 w/a 28p chopper
    Ain't it great to have papa TRUMP back at the helm?
    Rebuild thread:
    http://www.screamandfly.com/showthre...-it&highlight=
    http://www.screamandfly.com/showthre...cs.&highlight=
    Videos

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  9. #111
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    Could you charge a battery with hot air? (lots of it!)
    Wriggleys gum makes me think of boating, "Double your engines, Double your fun"



  10. #112
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  11. #113
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    Photovoltaic solar provides like 6% of the world's electrical power, so who cares? If the panels degraded at 100% per year, the only people who would notice are the dumb bastards that bought them.

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  13. #114
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  15. #115
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    Quote Originally Posted by David - WI View Post
    Photovoltaic solar provides like 6% of the world's electrical power, so who cares? If the panels degraded at 100% per year, the only people who would notice are the dumb bastards that bought them.

    6% means that more then 1 in 20 powerplants has been replaced by the sun. That is a 39% increase from last year! China is installing enough solar to replace 3 fossil fuel powerplants everyday! Only people with IQ's higher then 75 care.

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  17. #116
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  18. #117
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    Quote Originally Posted by fixer68 View Post
    6% means that more then 1 in 20 powerplants has been replaced by the sun. That is a 39% increase from last year! China is installing enough solar to replace 3 fossil fuel powerplants everyday! Only people with IQ's higher then 75 care.
    No it doesn't. It means the real powerplants are being throttled back by 6% during the sunny days to allow the subsidized solar power to be used.

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  20. #118
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  21. #119
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    Quote Originally Posted by David - WI View Post
    No it doesn't. It means the real powerplants are being throttled back by 6% during the sunny days to allow the subsidized solar power to be used.

    As opposed to subsidized oil? Besides, you people bitch about paying to much taxes all the time. When you buy a solar system for your home, you only get a tax credit if you paid income taxes. And only for the amount of taxes you paid over 5 years or up to 30% of the system cost. It's your money. It doesn't actually come from other peoples taxes. It's like a business writes of business expenses to reduce their tax burden. You write off your solar system from your taxes. I got my system a long time ago. It has been great! I produce plenty more than i use. No money down and my bill went down 20% from what it was. Plus, with electric prices soaring, mine will not change.

    US Taxpayers Will Pay Billions in New Fossil Fuel Subsidies Thanks to the Big Beautiful Bill | WIRED
    Last edited by fixer68; 09-11-2025 at 12:08 AM.

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  23. #120
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    Quote Originally Posted by fixer68 View Post
    As opposed to subsidized oil? Besides, you people bitch about paying to much taxes all the time. When you buy a solar system for your home, you only get a tax credit if you paid income taxes. And only for the amount of taxes you paid over 5 years or up to 30% of the system cost. It's your money. It doesn't actually come from other peoples taxes. It's like a business writes of business expenses to reduce their tax burden. You write off your solar system from your taxes. I got my system a long time ago. It has been great! I produce plenty more than i use. No money down and my bill went down 20% from what it was. Plus, with electric prices soaring, mine will not change.

    US Taxpayers Will Pay Billions in New Fossil Fuel Subsidies Thanks to the Big Beautiful Bill | WIRED
    You could just say, "Sorry, I was wrong"... rather than deflect from the conversation.

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