Recent content by RHTizzy

  1. R

    Prismatic LiFePo4 without terminal connectors, what to do?

    I'll make sure to test the epoxy before I try to apply it. I'll try various thicknesses to see how it conducts and whether a washer included has any effect. And yes, SS is a really poor choice for this application.
  2. R

    Prismatic LiFePo4 without terminal connectors, what to do?

    That is in effect what the epoxy is doing, no? The washer itself is only there for strength and surface area not for conductivity and should have no influence on the conductivity. So what bolts do people normally use anyway, zinc, iron, stainless steel, tungsten,...?
  3. R

    Prismatic LiFePo4 without terminal connectors, what to do?

    That would depend on the material of the washer, no? Besides, silver has a better conductivity than alumium.
  4. R

    Prismatic LiFePo4 without terminal connectors, what to do?

    Perhaps conductive epoxy in combination with minimal thread tapping could provide a strong enough terminal connection? So perhaps drill and tap a minimal hole and use the epoxy to fix a washer (for surface area) and the bolt in place to the existing terminal pad.. The epoxy is rather expensive...
  5. R

    Prismatic LiFePo4 without terminal connectors, what to do?

    Almost convinced I need to drill now but still hoping for some clever solution that's non-destructive. I'll have a look for the tapping thread (no pun intended), thanks.
  6. R

    Prismatic LiFePo4 without terminal connectors, what to do?

    They're 280Ah cells. I have a few milling bits around so could easily get a flat hole even though they're not meant for drilling. If push comes to shove I'm not afraid of screwing it up other than the unknown depth. Preferably though I'd like to test them without doing irreversible damage...
  7. R

    Prismatic LiFePo4 without terminal connectors, what to do?

    Just two to test before buying a whole bunch. Aluminium is really soft and can actually even be tapped by drilling undersized and threading a bolt. That's not a problem, but drilling is not really a responsible idea and all manufacturers say that, so I'm looking for another option besides...
  8. R

    Prismatic LiFePo4 without terminal connectors, what to do?

    No, just the two. They're Eve cells (or sold as) and shipped from Poland. They actually both also have a bit of a bulge even though they were shipped at 3.2V. The terminals themselves do look a little scratched which might have been a result of the shipping process as neither had any protection...
  9. R

    Prismatic LiFePo4 without terminal connectors, what to do?

    So I received two of these cells and neither have connectors attached to the poles, they're just flat surfaces of apparently aluminium. The seller recommends not to tap holes into the cells but to laser weld some studs. That's not something I can do myself and represents an increase in the cost...
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