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Li-ion vs LiFePo batteries

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  • #46
    Found this twin pack on amazon:


    So perhaps 2x orders of those to create 22.2V ~12Ah Go Ped battery? Seems not bad pricing to support the Torkiantor but would spin slower than a 8 cell LiFePO4 battery. (6S LiPoly @ 4.2v is 25.2v compared to 8S LiFePO4 @ 3.6v is 28.8v) Thus trade off of supporting the acceleration vs top speed.

    Or seems can get 14Ah for sub $200

    That is pretty damn reasonable
    if it supports the Torkinator for 200 cycles at min. Downside of having to invest in LiPo gear (fire bags, LiPo specific charger, adding external access ports, etc) and increased risk of burning down your house

    Wow even 18Ah for around $250
    Last edited by ESR_RSE; 03-22-2022, 11:46 AM.


    • #47
      Delete. Forgot that 8S LiPo will have too high voltage unless alter GoPed controller (not done yet by someone but there are ideas) or use a special charger that can be configured to under charge the LiPo to not the full 4.2v per cell.

      Sweet spot for LiPoly (w normal chargers) is that 7S which is what GoPed uses in the Torkinators (batteryspace unit)
      Last edited by ESR_RSE; 03-22-2022, 11:50 AM.


      • #48
        This thread continues to be silent.

        Most likely because the ESR is dead going forward? After the BMS killed off my 32Ah Headway LFPs I couldn’t bring myself to drop over $1k on a new 32Ah pack and instead bought a Titan / Zero 10X eScooter for about the same price as the batteries alone. And with full suspension and dual hub motors I don’t need to be concerned with occasionally losing the chain despite using the “Slackinator” or whatever that’s called.

        It’s likely because I’ve invested hundreds, if not a few thousand, upgrading my ESR over the last 15+ years that I don’t want to write it off. I’ve seen at least one guy used the frame to build a hub motor version but I’m not sure that’s worth the effort either. It’s unfortunate to send it off for scrap since it’s such a versatile, durable and compact scooter that served me well for years without fail (long term battery issues aside).

        so what to do now?
        Last edited by SoCal Steve; 11-09-2022, 11:44 AM.


        • #49
          The pan size is just kinda a pain. Hoping Tesla makes cells cheap and popular that will fit the pan with minimal work.