looking ahead to cobalt-free batteries

Aptera Community Aptera Discussions looking ahead to cobalt-free batteries

Aptera Community Aptera Discussions looking ahead to cobalt-free batteries

  • looking ahead to cobalt-free batteries

     Curtis Cibinel updated 4 weeks ago 2 Members · 2 Posts
  • Nick Michell

    Member
    June 8, 2022 at 9:22 pm

    Tesla will be buying LFP batteries from BYD:

    https://pushevs.com/2022/06/08/byd-will-supply-batteries-to-tesla/https://pushevs.com/2022/06/08/byd-will-supply-batteries-to-tesla/

    While LFP batteries are less dense than NCM (Nickel Cobalt Manganese), they are also considerably cheaper, and they don’t need an expensive conflict metal (cobalt), or the less expensive but still pricey nickel (much of which comes from Russia). By getting rid of the modules, BYD in their “blade” design has made the density of LFP batteries somewhat competitive with NCM, which would work especially well in a really efficient car ie Aptera.

  • Curtis Cibinel

    Member
    June 8, 2022 at 10:05 pm

    I examined two potential lfp options (CyclenPo 180 wh/kg and Goshen High tech bleeding edge 210 wh/kg). Using current off the shelf CyclenPo lfp increases the pack for the 400 mile pack from about 450lb to 600lb and may save thousands on each vehicle. Switching to lfp definitely should make sense given the shell was designed to store enough batteries for the 1000 mile version.

    It is very hard to estimate cell process at wholesale but assuming they can do about 20% less than retail on both or could be $4000 per 400 mile Aptera. It will probably cost millions in development and retooling but if it saves even $1000 per car this should be easily justified. https://docs.google.com/spreadsheets/d/1Tuu7avKH2dS_JPk7aiP2av09a1f1WE0OvvNH6fdHpiQ/edit?usp=drivesdk

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