Hybrid battery cooling mod

Discussion in 'Gen 3 Prius Accessories and Modifications' started by AzusaPrius, Jun 19, 2020.

  1. PriusCamper

    PriusCamper Senior Member

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    Always parking in the shade and only driving during the coolest parts of the day will make a huge difference in not just your comfort but the longevity of your vehicle. Worst thing you can do is be a 40-hour a week worker zombie who lets their car bake in a parking all day 5 days a week and then drives home in that overheated car for an hour or more in bumper to bumper gridlock traffic. Doing that for decades will not only shorten your own lifespan, but the lifespan of your vehicle too.

    Also a Sodium-Ion battery pack will always have way more amps available on really hot days to power your AC system. Whereas your OEM battery pack on a super hot day will show less amps available and computers will send less power to the AC, so you and your battery pack run hotter.
     
  2. darknd666

    darknd666 Junior Member

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    What about a lithium pack, the one from innrg solutions? I know lithiums dont like high heat either.
     
  3. Hayslayer

    Hayslayer Active Member

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    wow..........
     
  4. darknd666

    darknd666 Junior Member

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    I chuckled a bit at that, but hey everyone is entitled to their own opinions.
     
  5. PriusCamper

    PriusCamper Senior Member

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    It's more than just opinions, it's actually proven and accepted knowledge by more than just me. Which part of my statement do you think is wrong?
     
  6. darknd666

    darknd666 Junior Member

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    I dont think what youre saying is wrong, but if I have to do all that to own a prius or any EV, I might as well put it in a climate controlled glass case and not even use it.
     
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  7. PriusCamper

    PriusCamper Senior Member

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    I should of clarified that its a lifestyle choice... If you live somewhere where you can easily handle ever hotter and hotter temperatures and have enough flexibility in your schedule to avoid the worst of it. Both your own life and your car's life will last longer...
     
  8. PriusCamper

    PriusCamper Senior Member

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    yep... overcharging and heating issues common with Prius can very quickly destroy high density lithium, which can't handle it. What's more, once high density NMC/Lithium starts burning it creates its own oxygen so instead of a failure with low density cells that make smoke and melt stuff you get a fire that's super hard to put out that might destroy your car entirely... Here's the SaltyHybrid.com version of what I just said: Dangerous NCM Lithium Battery Alert for Toyota Prius Owners - NexPower Energy
     
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  9. darknd666

    darknd666 Junior Member

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    It sounds pretty conflicting when it says even sodium ion batteries are not safe but yet they sell them....so whats the deal? I get the whole lithium risk with heat and fire, but they sell the very same battery technology that page warns about...

    I would love to upgrade my aged battery to something that would enhance the vehicle overall (mainly fuel efficiency)
     
  10. darknd666

    darknd666 Junior Member

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    Sorry, i edited this because I realized we were drifting off topic
     
  11. PriusCamper

    PriusCamper Senior Member

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    I'm mostly here for the purpose of drifting off topic in helpful ways.
     
  12. darknd666

    darknd666 Junior Member

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    So, is the sodium battery safe and is there ever going to be a safe lithium alternative? Assuming someone develops a compatible charge controller or a mechanism of the sort, would that lead to the development of a more energy dense battery?
     
  13. ASRDogman

    ASRDogman Senior Member

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    Yes, the Sodium Ion Hybrid battery from Jack, is safe.
    I've had the Sodium Ion Hybrid battery in my Prius since September 2024, and it's great!
    No issues.
    Lithium can be very dangerous, that's why companies are getting away from them.
    Slowly, because there's a lot out there and it will take time.
    Sodium Ion is what they are moving too. It is much safer.

     
    #53 ASRDogman, Apr 15, 2026 at 8:45 AM
    Last edited: Apr 15, 2026 at 10:31 AM
  14. Brian1954

    Brian1954 Senior Member

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    This is getting off topic, but a safe version for Lithium-Ion hybrid battery is being developed right now. It is not ready for sale yet. See this thread
    https://priuschat.com/index.php?posts/3456457
     
  15. PriusCamper

    PriusCamper Senior Member

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    The video from Salty Hybrid's competitor is correct in most respects, but wrongly claims that all aftermarket batteries avalable are not safe because he's planning to sell a new battery ECU design for Gen3 Prius, which will increase supervisory control and monitoring of all battery cells, which is essential for Lithium because they can't handle too much heat, too much cold and too much charging and can burn your car to the ground if they aren't shut down soon as a cell starts to fail.

    Whereas Toyota's Nickel Metal Hydride and more modern sodium-ion can safely handle that. Lithium Iron Phosphate on the other hand is lower density than Lithium-ion and safer and there's near 4K of those packs on the road, but their lifespan isn't as reliable due to the explained Lithium weaknesses, which is why the company switched to Sodium-Ion.

    The root of the problem is Toyota Battery management monitors 12 cells as one block and using Lithium-Ion (aka: NCM / NMC) requires all cells to be monitored individually, which is what the competitor is designing. When that's available for sale you'll have very little limit to how many batteries you can put in your Prius and it will allow for a near EV conversion of Prius.

    In the meantime, Sodium-Ion has proven reliable for three years of torture testing with Toyota's existing BMS...
     
  16. Hayslayer

    Hayslayer Active Member

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    Please explain how this is right?

    Also a Sodium-Ion battery pack will always have way more amps available on really hot days to power your AC system. Whereas your OEM battery pack on a super hot day will show less amps available and computers will send less power to the AC, so you and your battery pack run hotter.
     
  17. darknd666

    darknd666 Junior Member

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    Oo im going to stack the trunk with cells to the max