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Featured Why repairing your BEV is so expensive—WSJ

Discussion in 'Prius, Hybrid, EV and Alt-Fuel News' started by Gokhan, Dec 4, 2023.

  1. Trollbait

    Trollbait It's a D&D thing

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    Only the Model 3 RWD uses LFP.

    People that regularly make such trips will opt for the long range one with 333 miles.

    What was your 12V battery SOC before and after that time parked? Among the other drains, Tesla's use the traction battery to maintain the starter.
     
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  2. bisco

    bisco cookie crumbler

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    we need more battery supply, and we'll get it eventually. mfg's could drop the replacement cost if they weren't putting every available battery in new vehicles
     
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  3. Isaac Zachary

    Isaac Zachary Senior Member

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    Maybe some day, years from now, I'll be picking up a used Tesla with LFP batteries for cheap.
     
  4. Gokhan

    Gokhan Senior Member

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    Yes, in my reply, I was saying that the standard-range model was using the LFP battery, which was increasing the battery cycles. The question was how much the LFP battery life got affected by the smaller capacity, hence increased cycles.

    I think even 333 miles is on the short side and doesn't match the ICE counterparts. For BEVs to become mainstream, which I expect in mid-2030s, the batteries need to cost less, have more specific energy, last longer, and charge faster. This will happen through gradual technology improvement and/or development of solid-state batteries.

    I didn't check the 12-V battery voltage, but there were no issues when I started it after six-plus weeks. I also had an active Toyota Connect subscription. It was during the summer time; so, it was warm. I am guessing that the 12-V battery was fully charged before I left it.
     
  5. Gokhan

    Gokhan Senior Member

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    More parasitic losses when you have a larger battery? That makes no sense whatsoever. Losses happen at the cell level and should not depend on the number of cells. Moreover, with more cells, you have a higher capacity for standby drain.
     
  6. hill

    hill High Fiber Member

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    in simple terms - by example - 10% of a little 5kwk pack is only ½kWh ... whereas 10% of a 100kWh pack is 10kWh's
    .
     
  7. Gokhan

    Gokhan Senior Member

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    The only difference is the number of cells. Therefore, percentage parasitic drain should be the same.

    It is like you buy ten 18650 cylindrical lithium-ion cells for your flashlights and want to keep them in separate boxes to reduce parasitic drain on them instead of putting them all in the same box.
     
  8. Isaac Zachary

    Isaac Zachary Senior Member

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    333 miles doesn't match ICE counterparts, sure. But does it have to? Before I finally broke down and bought a newish car I had a diesel car that would do over 800 miles on a full tank. And the car cost me $600 used (and I'm still kicking myself in the rear for having gotten rid of it 200,000 miles later). Are there any gasoline cars that come close to that, or are the masses going to switch over to diesel because it can take you farther on a tank?

    Cheaper batteries are the key in my opinion. Sure, having 500 or 800 or so miles of range would be nice, but who drives that much on a regular basis? Sure, range and charging times do play a part in slowing EV adoption, but I'm pretty sure the main culprit is price. Make a $15,000 BEV with a 250 mile range and it would sell like hot cakes.

    If 10% of a family of 10 died it would be 1 person. If 10% in a city of 10 million died, then 1 million people would have died.

    At any rate, you can't always go by what the vehicle says the percentage was. As far as I understand, not one Hybrid or PHEV or BEV manufacturer puts in acurate gauges for monitoring the battery.
     
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  9. hill

    hill High Fiber Member

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    Funny you should put it that way. Since the majority of electric cars on the road today are Tesla, and Tesla has the screen below,

    Screenshot_2023-12-16-15-39-22-01_680d03679600f7af0b4c700c6b270fe7.jpg

    ...... might it not be safe to say the majority of ev's do show % gauges among the many other data readouts through the mfd?
    ;)
     
  10. El Dobro

    El Dobro A Member

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    Is that for the life of the battery or the charge in the battery?
     
  11. hill

    hill High Fiber Member

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    Charge
    ;)
    .
     
  12. Isaac Zachary

    Isaac Zachary Senior Member

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    But 85% of what? Does 100% really represent 4.25V per cell? I'm not bad mouthing Tesla, but the point is we can't just compare SOC's and come to conclusions that Teslas leak a lot more current than other brands.

    And to compare that to a Toyota... My Avalon's gauges are about as precise as blind man throwing darts. The temperature gauge, for an example, is designed to keep the needle in the exact same spot from between 140 °F and 215 °F. The speedometer needle is different than the digital read out when selected on the dash, and both of those are different than if I get the car speed read from the OBD II port.
     
  13. El Dobro

    El Dobro A Member

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    Ok. With the Bolts, it's on the app.
     
  14. hill

    hill High Fiber Member

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    i get the point ..... but it's kind of like an old fashion gas tank. If you don't know whether or not the tank holds 12 or 18 gallons .... & it's ½ full ... it's still ½ full. You also know once you're below the ¼ tank threshold, you ain't got much longer.
    When our crappy gen1 Leaf was new - it indicated via a full/empty guage. ½ the battery would get us 35 miles reliably.
    7yrs later - the gauge showed half capacity left .... so .... the charge part of the guage at 100% full meant we'd get no further than 35 miles.
    Another Tesla info screen will estimate range/fuel status based on capacity - coupled w/ drive 'conditions' (cold weather - lead foot etc).
    As you drive at 40mph - Is it important to see "95 miles range remaining" .... if you're now going to pull a 6% grade at 78mph?? At the time we sold our Tesla X Tesla was contemplating Terrain calculations as well - but who knows whether that's been implemented over the past 5 years. In any event you have the same Dynamics with a gasser.
    .
     
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  15. bisco

    bisco cookie crumbler

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    the bolt shows estimated miles based on past performance, as well as a max and min. fairly accurate if conditions are similar.

    it also shows percentage bars, based on the estimated miles, or vice versa.

    it all seems quite accurate in my limited experience.
     
  16. Tideland Prius

    Tideland Prius Moderator of the North
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    Usually that's the first sign, yes. On the plus side, Toyota hybrid batteries are definitely on the lower cost side; not trivial but not $10s of thousands. I have noted that the Camry Hybrid batteries are more expensive than the Prius ones so it's possible that the Avalon one will be too.

    That's pretty good though. A LR with 18" wheels will be the choice vehicle for those who want maximum highway range. Mine can only do 250 miles in the summer on flat terrain. Drops to 220 miles in mountainous terrain. Sure it doesn't mean I can do 900km to a tank but at least I'll be eating while I'm charging (Barely. Even at a slower 100kW station, it was just slow enough to eat lunch).
     
  17. Isaac Zachary

    Isaac Zachary Senior Member

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    Do you know about how much?

    The Avalon HV battery is the exact same one as the Camry HV battery. They are interchangeable.
     
  18. hill

    hill High Fiber Member

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    And iirc the Avalon Camry are all built on the same chassis as Highlander and Lexus SUVs. Best to give the service station a call for exact pricing.
    On an ancillary note - You happen to mention here in this thread;
    As the the issue continues about longevity of ev's versus ICE cars - there's another dynamic. When you have a hybrid ....weather plug in or not - you have 2 big expensive things that may last or may go out.
    .
     
    #78 hill, Dec 17, 2023
    Last edited: Dec 17, 2023
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  19. bisco

    bisco cookie crumbler

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    if you like working on cars, maintaining the old battery should be fun and relatively easy.
     
  20. Isaac Zachary

    Isaac Zachary Senior Member

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    Oh yes, I've taken appart and put together the Prius HV battery and tested every module and put in 3 used modules off of eBay to keep the car running.
    But in the end it's kind of pointless. By the time one module fails the others aren't that far behind. At 30K miles per year it won't be long before the others start dying. The way I see it, replacing modules, grid charging and after market batteries are either for those that don't use their car much or who want to be able to sell it in a running condition.
     
    #80 Isaac Zachary, Dec 17, 2023
    Last edited: Dec 17, 2023
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