diy solar

diy solar

Most reacted posts

  • Post in thread: Replacement of BMS

    Hi all, Ok, i decided i'm going to replace my batteries bms's because the Narada's bms settings is not accessible and the controll is not good. I have times where 1 or 2 cells volts have reached 3.75v before the bms stops charging. Now, comes the big question, the Seplos looks like a streight...
  • Post in thread: LiFePO4 on an Axpert inverter, possible?

    Hi, quick question, what is the difference between absorpt and equalize? On my Axpert inverters when charge voltage is reached, when using utility, it switches over to battery mode, and immediately the volts drop to +- 49/50 volt, depend on load. There is no absorption time. Can i use the...
  • Post in thread: 15S battery charging issues. Different capacity cells?

    So I installed the balacers. Fantastic. Never have I seen the cells so balanced!! The problem is that the bms's did not reset the Ah. The batteries is at 54.4v. On one battery all cells is above 3.6v, and on the other only 1 cell is sitting at 3.54v. Just waiting for the balancer to do its job...
  • Post in thread: 15S battery charging issues. Different capacity cells?

    My batteries capacity's has dropped, SOH is still at 100%. Cells was unbalanced. I balanced my cells to +- 3.6v. My batteries capacity is supposed to be 100Ah. Now reading 53.8 Ah. I do not believe there is faulty cells. How do I get the bms to re-calculate the capacity? When I charge the...
  • Post in thread: 15S battery charging issues. Different capacity cells?

    Sorry i might sound stupid, but how?? Before total voltage reaches 54v, 1 cell is at 3.65v or it reaches the capacity and stops charging.
  • Post in thread: 15S battery charging issues. Different capacity cells?

    I believe that is the issue I have with my batteries. When my system was installed, I think the installer installed repaired batteries. They are supposed to be 48 v 100 ah, 15s batteries. A that stage there was no software to read the bms. I resently got the software. I have 2 narada 100ah...
  • Post in thread: 15S battery charging issues. Different capacity cells?

    I agree, but that is the only thing I can think of. Personally I hope that is what the supplier did, because to rectify it might be cheeper than buying new batteries!
  • Post in thread: 15S battery charging issues. Different capacity cells?

    Ok, i understand. I have tried that previously, but the Narada's does not have good bms's. I should receive my active balancers this afternoon or tomorrow. I'll install them and see. Thanks for the help!!!!!!
  • Post in thread: 15S battery charging issues. Different capacity cells?

    Trying to get to Naradas to re-calculate the capacity, I decided to run them empty. The Narada manual shows cut-off voltage is 42v. Unfortuanetly the lowest the inverter can go is 44v. Sooo, at 46.9v my batteries remaining capacity showed 0Ah. I pushed it down to 44v (running a bit higher load i...
Back
Top