Battery pack upgrade

Aptera Community Aptera Discussions Battery pack upgrade

Aptera Community Aptera Discussions Battery pack upgrade

  • Battery pack upgrade

     Greg Vickery updated 1 month ago 43 Members · 67 Posts
  • Craig Merrow

    Member
    December 27, 2022 at 12:47 pm

    I just spec’d the 600 mile version even though it’s later in the production run. I would imagine that in the future, with battery technology improving all the time, a better battery pack could be retrofitted that offers more range for the same physical size. Just a thought!

    • Jonah Jorgenson

      Member
      December 27, 2022 at 1:13 pm

      The answer is no, you can not upgrade your battery once you have selected a battery and delivery of the vehicle is made for the first production Aptera. The batteries are not plug and play. You may change your battery selection as many times as you want in your reservation. Once you are contacted to place an order and schedule delivery, your battery selection is fixed at the last level in your reservation/order.

      The attery configurations have different weights and different control electronics for each battery configuration. Changes to suspension, battery control electronics, and other software changes may need to be made to accomodate another battery configuration. It is best to reserve/order the largest battery configuration you think you may need before delivery.

    • Greg Vickery

      Member
      December 30, 2022 at 11:28 am

      I also want the 600 mile battery but with production being moved until they have raised enough money to start production, I am hopeful all the batteries will be available when production starts.

  • Sam Adams

    Member
    December 27, 2022 at 1:04 pm

    This area is liquid right now but I think the last I heard was that it is upgradeable provided you remain in the same sized battery group.

    So if you purchased the 250 miler and later wanted to bump up to the next, you could by adding more batteries to fill that battery cavity to full capacity.

    Whether DIY, I don’t know.

    • Ray Holan

      Moderator
      December 27, 2022 at 1:17 pm

      Hi, Sam. This has been discussed extensively. The majority of informed opinions repeated on this forum is that one cannot upgrade their Aptera in the field from say a 250 mile pack to the 400 mile pack. However, assuming a higher energy density cell becomes available later and it conforms to the physical dimensions of the original cells, that may provide an upgrade path so your original 250 mile pack might yield 275 or 300 miles with the upgraded cells. Of course, official verdict from Aptera has not been rendered as far as I know.

  • Richard Ries

    Member
    December 29, 2022 at 12:39 pm

    Wow, from the design drawing I saw of the battery pack would not be that hard to make it upgradable. All you need is the space and a interlocking battery pack. Say with the positive at the top and negative at the bottom.

    We did this with some custom Lion batteries and it worked great, would just have to scale it up a bit.

    If they do it in say 250 mile increments, equiv in power, that would be perfect

  • Craig Merrow

    Member
    December 29, 2022 at 12:49 pm

    It’s been said that we’re in the Model T stage of EVs; will be interesting to see how advances in batteries will play out over the next few years.

  • RAYMOND NETTLETON

    Member
    December 29, 2022 at 3:26 pm

    It may be a moot point, but in theory if the voltage of each module is the same as the base module and they were the same amp hours you should be able to add them in parallel. The cars drive unit wouldn’t know the different. The range computer and charging would be messed up but…… The BMS could be made to compensate for minor variations between old and new.

    Many things would need to happen in order for this to be possible.

    1.) The suspension would need to be adjustable to the various battery weights.

    2.) The battery cavity would need to accept modules. The Aptera Website is misleading as it simply shows stacking modules. This is were many people are mislead.

    3.) The BMS would need to be very flexible and configurable.

    As others have said it is easier to just change your order. It will be interesting to see if you might be able to swap an entire battery pack say from a 600 to a 400 range unit if the 600 mile unit is severely damaged but the battery is OK however there is speculation that the 600 unit might actually use different form factor which might change the mounting and or total space requirement. There might be some economic incentive to do that. It is logical to me that the total battery cavity space will be the same between the different models with shims or storage to be added and deleted.

  • BigSky Country

    Member
    December 29, 2022 at 6:19 pm

    I don’t think so. My understanding is that the battery technology will be different for the 600 and 1,000 mile variants (larger batteries). If you think you may want more capacity, then do it at purchase.

    • George Hughes

      Member
      December 30, 2022 at 12:11 am

      The only practical concern is what happens to that handful of battery packs that fail before, lets say, 20 years when ranges have diminished to half that initially projected.

      Two things, assuming the batteries are otherwise reliable, even a 100 mile range is useful and if grandpa wants to cruise 15 miles to the store and back twice a week in his 25-year old Aptera 250.

      Now when the grandson inherits it, he’s going to want to get a renewed battery ‘of some sort’ that may even increase range within the same weight range of the original.

      What will battery tech look like in one or two decades? It may be different enough so that it delivers twice the power in the same weight group. Does that mean the renewed Aptera 250 becomes the 500?

      Assuming a leap of that magnitude happens sooner, say in five or six years, with a corresponding 50 percent drop in price to boot. Now, ask yourself “would that be enough for folks to seek an immediate upgrade?” Unless the old battery is self-immolating, I don’t think so.

      The point is even five years hence, if you needed greater range on your Aptera 250, it is unlikely you would try to find a second hand 1,000 mile battery to put in it with the problems with weight, suspension and programming.

      Rather you’d probably prefer the current state of the art battery for the 250 mile model that makes it 350 mile capable or do a trade for the Aptera 1420.

      The whole point of this is, replacement batteries will be a market driven solution aided by the detailed engineering data provided through RTR allowing third party entities, yet to be formed, to supply retrofit products for all the Aptera subsystems … if there is a market.

      • Russell Fauver

        Member
        December 30, 2022 at 8:17 am

        Agreed. With my 90s era ev the original wet cell nicads delivered 75 miles and weighed 800 pounds. Recentlly upgraded with new LFPs that weigh 650 pounds and deliver 280 miles. Hoping to get another 10 years or so out of the car for a total life of about 35 years. With Chris talking about the expected life of an Aptera being close to 50 years (no steel to rust away) I’m sure we will find ways to upgrade the batteries.

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