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Prius Battery Replacement Kit (GenII/GenIII) with NEW custom cells

Discussion in 'Gen 2 Prius Main Forum' started by 2k1Toaster, Oct 13, 2017.

  1. bwilson4web

    bwilson4web BMW i3 and Model 3

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    After seeing the Tesla battery technical details, a good question for everyone else, not just Toyota.

    Wether 18650 or 21700 cells, the improved packaging would easily solve the Prius Prime traction battery problem. The key to low battery price would be standard cells configured in different manufacturer battery modules or packs. Modules because that support field upgrades and repair.

    Bob Wilson
     
    #521 bwilson4web, Nov 22, 2018
    Last edited: Nov 22, 2018
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  2. Prodigyplace

    Prodigyplace Senior Member

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    I do not think there is a D cell kit for Generation 1 Prius.

    From what I understand there are wiring harness changes needed to use the D cell modules. @2k1Toaster can elaborate.
     
  3. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    The batteries can be used in anything including a Gen1. And we've sold them to be used in Gen1 Prii. The catch is the wiring harness as you point out.

    Since the ECU only monitors every 12 cells you need the wiring harness to attach to every 12 cells. On the original prismatics it snakes back and forth and all the connections are on the same side. With the cylindricals half the connections are on one side and the other half on the other side. This means the wiring harness needs to be kind of split. So we provide a wiring harness that is longer with connection points that alternate.

    On a non supported vehicle like the Gen1 we don't have premade wiring harnesses. So you can splice new harness for a similar vehicle in with the old harness and get it to work.
     
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  4. Prodigyplace

    Prodigyplace Senior Member

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    Price would be higher for Gen 1 too, since more modules are needed.
     
  5. NortTexSalv04Prius

    NortTexSalv04Prius Active Member

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    FYI
    Okay I took the plunge and purchase the Gen2 style.
    Questions
    Is Ceba the brand on this style battery?
    Any track record on these beside what has already been stated?

    Popular thread
    I have watched CEBA on youtube looks very similar
    OEM cost via dealership around $2200
     
    #525 NortTexSalv04Prius, Nov 22, 2018
    Last edited: Nov 22, 2018
  6. Prodigyplace

    Prodigyplace Senior Member

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    Ceba is a cheap Chinese brand using the same clips with inferior batteries. The link to NewPriusBatteries is in my signature. They co-developed the clips with Ceba but use better batteries. @2k1Toaster can add details.
     
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  7. offib

    offib Member

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    I know this is branching off a bit, but maybe these cells can potentially reach out beyond all things prius.

    Recently at SEMA:


    I'm not sure if you guys are aware of this yet, but it's good news all the same. They say that their dual rear hub assist design can run off Prius batteries for "$2000":cautious: they never seriously in depth discussed the power source for the motors. They're quoting almost 10 grand for the whole shebang (that adds 2x50hp + hybridization) and the red blooded petrol heads are taking it seriously. Just throwing it out there.

    I'd long hope to live the day too see someone to put this on a Prius for shiggles, or just as a plug-in upgrade.
     
    #527 offib, Nov 23, 2018
    Last edited: Nov 23, 2018
  8. ericbecky

    ericbecky Hybrid Battery Hero

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    Sorry to say a $2,000 1 mile range Prius battery is not going to somehow magically make this motor achieve the promised 40 miles all ev.
    As you mentioned, it is topic and would be best in its own thread.
     
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  9. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    There are lots of customers that never post anything on Priuschat or forums or reviews. The majority of users I'd say are silent which is true of most products. You will get a vocal minority when there are problems (haven't seen any yet) and then a vocal minority that likes to spread praise about what they've bought. Most people buy stuff, use it, and move on. If there is no problem, you'll never hear from them.

    You can see in my first post the older style plastics. This was a CEBA kit plus my batteries.They did the work of getting the form factor right, I just made my batteries to fit their form factor. Wanted a better system and instead of spending $$$ to make new molds and keeping huge inventories of plastic, CEBA footed the bill for the new plastic design and they use it on their kits now. So we use the same plastics, I order my plastics from them, along with wiring harnesses. My batteries are different: shiny red with VERG stamped ontop makes it easier to see that at a glance. CEBA is gray with "CEBA" stamped ontop.
     
  10. R-P

    R-P Active Member

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    I promised this years ago. But never followed through (as it was a joke)... (Not sure it is the exact same thing
     
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  11. Prius ZVW30

    Prius ZVW30 New Member

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    Is that true that cylindrical battery are lower in capacity mAh vs the flat primatic type?
     
  12. Prodigyplace

    Prodigyplace Senior Member

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    I doubt it. @2k1Toaster or @ericbecky should know. Eric tested a pack for over 3000 miles.
     
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  13. R-P

    R-P Active Member

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    Not sure if I remember it correctly, but I thought the cylindrical cells were basically D-cell batteries in size. If so, they *can* be much higher capacity. The original is 6.5Ah and so is the one 2k1toaster sells (again, iirc). But I buy old electrical bicycle batteries that consist of D-cell NiMH's of 10 or even 11Ah.
    Close to double that of Toaster's batteries, but as with 18650 Lithium cells, there may be huge differences in capacity vs. maximum (dis)charge current... In general 18650 Lithium cells that can produce huge discharge currents (30-100A) will have very limited capacity (1500mAh) and very high capacity ones (3500mAh is about the biggest available) can only be discharged with 5A or so.

    But once more: this is all as I remeber it, but if I factcheck everything, someone else will have posted all relevant answers...:D
     
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  14. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    "Cylindrical batteries" are just that, only a form factor. You can put all sorts of goo inside and various chemistries. The cylindrical batteries I sell are 6.5Ah exactly the same as the original prismatics. There are other cylindrical cells out there that others on the internet have tested as well as myself for comparison purposes and have been as low as 2Ah tested even though marked ontop as being 6.5Ah. How many people have a few $k machine to fact check the claims? They bet on not many, and it works out for them.

    The e-bike batteries are generally lithium (LiFePO4 usually) and one of the huge benefits of lithium is its energy density. NiMH has less density but different long term effects.

    Our cells being 6.5Ah are slightly higher density than Toyota's originals, but not by much at all. You can sort of visualize this since you can literally see through the gaps in ours whereas the prismatics take up all the room except for the plastic casing. The plastic is thicker than our metal and there is an extra 2*wall thickness we don't have to deal with, so it comes out pretty close.

    You can usually get better/higher capacity if you reduce the charge cycles allowed or the current output abilities. So for example some medical devices you want the most capacity you could get so that if the power goes out it keeps working as long as possible. If you have to replace the batteries every 12-18 months, so be it. But that would be annoying in a car.
     
  15. R-P

    R-P Active Member

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    [offtopic]

    My girls have Lithium batteries in their e-bikes, but I tinker with a >15 year old one that had NiCd's (24V, 5Ah) that I swapped out for 10Ah NiMH's from a 'newer' bikebattery pack (I think they are still sold with NiMH packs to this day). Mine has a fuse and and a thermo-sensor, that's it for electronics. The newer one I salvaged the NiMH's from, have intricate monitoring system in both the battery as well as the bike (leading to the bike having to be reprogrammed by the dealer when you change the rear tire (and disconnect the motor)). And the battery will simply refuse to deliver current if it detects a fault or is 'dead' if it has water ingress. They get discarded then, even though in many cases the cells are just fine. And that's where I step in, the cells are a bitch to remove (big chance of stabbing yourself with a screwdriver of a chisel while opening it up), but can often be had for free. I will make another 24V pack into a 10S2P buffer for my 12V coolbox, running of off the car when moving and off of a solar panel when stationary.

    [/offtopic]
     
  16. Thoragaverung

    Thoragaverung New Member

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    Hello,

    I am thinking about picking up a cheap Gen2 to so with my wife's 2015. I imagine anything I buy will need a battery. You say this kit has half the cells. Does it have less weight than the stock battery? (Less weight is always a good thing.) How much weight savings would there be?
     
  17. 2k1Toaster

    2k1Toaster Brand New Prius Batteries

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    Same number of cells, half the modules. Instead of 28 modules with 6 cells a piece, it's 14 modules with 12 cells a piece. Same capacity, voltage, and weight.
     
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  18. Thoragaverung

    Thoragaverung New Member

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  19. celings

    celings New Member

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    I just purchased my first Prius 2008 touring. It only has 78000 miles bought directly from Toyota. My question is although the mileage is low and therefor i assume the cycles on the battery would be low but is there an age factor at play as well?
     
  20. R-P

    R-P Active Member

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    Yes, I think so. Age is not kind to most things. I just bought NOS (New Old Stock) NiMH batteries of 4-5 years old and they did get up to their rated capacitance by cycling them 3 times, but I didn't test them with a variety of loads, so not sure how much 'as new' they are.

    I recently got a message saying you could get a Hybrid check-up for 40euro*. If the battery is found to be healthy and it does die lateron, they will replace whatever is needed free of any extra charge.

    I read it as: I can bring my Prius with (probably) deteriorated but still functioning battery by and they will replace it for 40euro, but the wife made clear I read it wrong :)

    I don't recall how long the warranty will be once they give the hybrid system a clean bill of health, nor do I know if this is just a Dutch thing.

    Here's the Dutch link, as Google translate says it cannot translate the page...

    * Edit: It says it is 70euro without or a maximum of 40 euro in combination with a service, so I am assuming the 'certificate' you get with it is valid for a year, or a year's worth of miles.

    Edit 2: it seems it is only for Hybrids of up to 10 years. I think mine will be 10 in 3 months.
     
    #540 R-P, Dec 12, 2018
    Last edited: Dec 12, 2018
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