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  1. riba2233

    Tabless design cylindrical cells tests

    Wow I am so excited for this, thanks! I would be so happy to see you test murata VX40 cells, they should perform even better than these EVEs imho.
  2. riba2233

    "Copper/nickel sandwich" buses for series connections

    just fyi, they are closer to 30A continuous (and that is in open air, less in the pack), 45 is peak and they will heat too much at that current. Be careful 👍
  3. riba2233

    kWeld - "Next level" DIY battery spot welder

    haha idk, tell them it is a pure pos and not worth it, hopefully they will trust you :)
  4. riba2233

    Cycle life tests of High Power density cylindrical cells

    Awesome, you are a savior :)
  5. riba2233

    Cycle life tests of High Power density cylindrical cells

    That would be awesome, thank you so much 😊
  6. riba2233

    Cycle life tests of High Power density cylindrical cells

    Thanks, do you think you could maybe run another sample just to verify? This cell has really good specs on paper and is one of the most affordable so it might be worth it.
  7. riba2233

    Cycle life tests of High Power density cylindrical cells

    Interesting, do you think it was a fluke or? I was really hoping that it would be a good candidate :|
  8. riba2233

    Cycle life tests of High Power density cylindrical cells

    wow P30B look unreal, IR is so low! BTW what happened to tenpower 40TG? Did it die or is the test simply not finished? thanks!
  9. riba2233

    Cycle life tests of High Energy density cylindrical cells

    M58 looks really good!
  10. riba2233

    Cycle life tests of High Energy density cylindrical cells

    awesome, glad to hear!
  11. riba2233

    Cycle life tests of High Energy density cylindrical cells

    Awesome, NKON also got some new molicel P30B, looks like a miracle high power high capacity 18650! I am sure it would be worth testing as well.
  12. riba2233

    Cycle life tests of High Energy density cylindrical cells

    Super, ja isto 👍
  13. riba2233

    Cycle life tests of High Energy density cylindrical cells

    5.8Ah variant looks much more interesting, 6ah looks like "we want to be above 300Wh/kg" btw Antonijo otkuda si?
  14. riba2233

    Soldering high current 21700 battery pack from Samsung 30t cells. Is soldering batteries ok in your opinion?

    Short term yeah. Btw are you aware of how the positive terminal is connected to the can (negative terminal)? Check it out and you will see why heating it up might not be the best idea.
  15. riba2233

    Cycle life tests of High Energy density cylindrical cells

    sad to hear, thanks for the update!
  16. riba2233

    Soldering high current 21700 battery pack from Samsung 30t cells. Is soldering batteries ok in your opinion?

    Yeah indium is another story
  17. riba2233

    Soldering high current 21700 battery pack from Samsung 30t cells. Is soldering batteries ok in your opinion?

    Look, it is nice that you are trying but we already had discussions like these 10 years ago, and nothing will chance the facts and knowledge we have on this forum, and soldering to the cells will always be a flawed method, nothing will ever change that. You can either accept it as a fact or not...
  18. riba2233

    Soldering high current 21700 battery pack from Samsung 30t cells. Is soldering batteries ok in your opinion?

    Wow, you are telling me about being ignorant, this is gold :D It is sad that you (allegedly) worked with such a fancy equipment and still don't know anything about how it works for these cells. Regarding the MRI, how can you even compare shavings from general metal fabrication to spot...
  19. riba2233

    Soldering high current 21700 battery pack from Samsung 30t cells. Is soldering batteries ok in your opinion?

    Look man I known you since at least 10 years ago and I know that you ar better than this, cmon. Let's stay objective and factual ok, no need for cheap trolling attempts.
  20. riba2233

    Soldering high current 21700 battery pack from Samsung 30t cells. Is soldering batteries ok in your opinion?

    Ok sure but there are ways around it, and it is certainly not fair calling them "toy cells" since they have the best tech in the world inside.
  21. riba2233

    Soldering high current 21700 battery pack from Samsung 30t cells. Is soldering batteries ok in your opinion?

    Ok I know that you are trolling right now, you can't be serious, this is just pure unhinged BS. And I don't, unfortunately I had plenty of MRI's. I really don't know where people come up with shit like this, it is really funny but also very sad. How can you call them toy cells, they are the...
  22. riba2233

    Soldering high current 21700 battery pack from Samsung 30t cells. Is soldering batteries ok in your opinion?

    This is another comment that comes from ignorance, spot welders are fine, you don't need to mess with them a lot and are not dangerous at all unless you have some extra shitty one, and they are used because they are the proper method, the one that was designed for these cells, not because it is...
  23. riba2233

    Soldering high current 21700 battery pack from Samsung 30t cells. Is soldering batteries ok in your opinion?

    It is never acceptable! Just don't do it, ok? It is not a myth, it is a fact and you are 100% damaging your cells. If you are ok with risk and degraded lifetime, do whatever you want. OFC, it is better to die by jumping from 12th floor than from 5th, but both are horrible right? Just don't...
  24. riba2233

    Soldering high current 21700 battery pack from Samsung 30t cells. Is soldering batteries ok in your opinion?

    you should never solder directly to these cells, there is no better or worse way, just don't do it.
  25. riba2233

    kWeld - "Next level" DIY battery spot welder

    Why would you use 11 at all?
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