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  1. R

    BMS with limited load current

    Nihao! Love your habit for disclaimers btw, some people think they have the sole right to intelligence and dont mind bullying others with their ignorance and hubris. Much appreciated that you display a mind of your own and are still willing to output goodwill for the sake of factual truth. Some...
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    BMS with limited load current

    Current regulators can be used for high-power circuits, including those requiring more than 10A of current. For instance, the LT1970 op amp with variable current limiting is designed to protect high-power circuits by providing precise current limiting. Additionally, there are regulators...
  3. R

    BMS with limited load current

    I just finished reading a few manuals (thanks for the uploads everyone) and not a single one mentions a semblance of maximum DIScharge rate, only threshold and transient. Both of which implement full lockdown on discharge. Interestingly enough the 10A hard throttle you use as validation for your...
  4. R

    BMS with limited load current

    I'm happy for your reply and can appreciate some of your faith in manuals. You have my thanks and goodwill.
  5. R

    BMS with limited load current

    Thanks for your clarity and perspective. That was my understanding to begin with too, but it contradicts with the sales rep and also the user manual depictions, so I came here.... And then also Ancient confirmed the Seplos sales rep statements, sadly without proof so I'm still sceptical. Then...
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    BMS with limited load current

    No you misunderstand. I am trying to limit the current that is output by the BMS. You dont know what I'm trying to do other than that. Which is why they say that people who "assume" make an ass out of u and me. Even with the best intentions, a simple question is best served by a simple answer...
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    BMS with limited load current

    Now you're confusing me, because previously you also said this. Are you saying the ancient misunderstood every time what i was asking? You now seem to understand the question though, even if your answers are contradictory to themselves....
  8. R

    BMS with limited load current

    Sorry for the confusion guys and thanks for all the opinions. I have been working with solar panels since 2017 and understand your concerns. Just dont know the Seplos BMS and the sales rep is demonstrably not a reliable source. As long as the Seplos can be regulated to NOT deliver more current...
  9. R

    BMS with limited load current

    Uhm, that then sounds like it's NOT a setting for a continuous maximum but rather a shuttoff switch. I'm looking for the former, not the latter. Is it indeed a simple cuttoff at an adjustable threshold? Or is it a maximum for a continuous discharge rate which I thought we had just confirmed?
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    BMS with limited load current

    Would you happen to have a screenshot of the config option btw?
  11. R

    BMS with limited load current

    Awesome, thanks for the validation! It's mainly a kind of backup system and will be grid tied but I dont want excess being pumped back into the grid. So by managing the discharge we keep it lower than our average usage. The idea is also that the lower discharge will benefit the longevity of...
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    BMS with limited load current

    Thanks guys, much appreciated. After some research it appears as if the Seplos BMS is a good fit for our system and also has current limiting. I've spoken to their sales guys (the engineers happen to be on holiday because of the chinese new year) but I'm having trouble confirming whether it...
  13. R

    BMS with limited load current

    Hi all, I was wondering if BMS's in general limit their continuous output load current or if they just cut off the load on a current threshold? If the latter, are there BMS's available where you can adjust the maximum continuous ouput load current? I'm putting up a 3,5kW solar array which...
  14. 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.
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    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,...?
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    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.
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    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...
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    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.
  19. 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...
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    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...
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    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...
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    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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