duyvietstar
New Member
- Joined
- Jun 11, 2021
- Messages
- 16
Very good. Thanks friendHow about this picture
Is this your video? What is your YouTube name? I would like to follow and view.I gave up and did it this way.
I was watching your videos. You have far more patience than I do. My cells are on a Rack with big busbars instead of individual enclosures. How many cells did you end up getting? I bought 112 initially to make 7 x 48v 280ah batteries. I was thinking of doing that again.Ray Builds Cool Stuff
is my youtube channel. Thanks for your support.
I think I will probably do my 112 order again for 224 total cells but that’s it. That would be over 200KWH at that point. The enclosure you built are fantastic but I just don’t have the patience for that. I compress them and put them on a rack. The BMS and Positive connect to busbars then to breaker/combiners.266 for two projects of eight batteries each.
I had the same problem. I just got rid of it today.Hi All, I purchased a Seplos 48V 100A BMS for my DIY 16S 100Ah LifePO4 battery pack. My inverter is a Growatt SPH3600 with a Pylontech US2000 that it communicates with over CAN. I connected the BMS to the battery and used the Battery Monitor Software to configure the settings. But my inverter cannot see the BMS. The BMS LCD screen displays the correct battery voltage and SOC. I have checked all the connections and have inserted the RJ45 into the CAN port of the BMS. I am wondering what could be the problem.
1. I chose the Growatt CAN protocol for communication. Should I use Pylontech CAN?
2. I read on another thread on this forum that pins 7 and 8 of the RJ45 must be cut in order for the BMS to communicate with the Growatt inverter. Should I try that? I just used the RJ45 that was connecting to the Pylontech and connected it to the Seplos instead.
Finally, the Pylontech has a feature where it reduces the charging current to 10A when the temperature goes below a threshold and then stops charging after a lower temperature threshold. Does the Seplos BMS have a similar setting?
I now have a new issue. A need to limit current for charging and discharging. In the Seplos interface I cannot change parameters. Every time I get an error like 'Faile to executeSet Pack.... [command not supported]. In the settings of the inverter I can't find an option. Do you have a solution for that?Same for me. I texted one of their after sales engineers (Link Liu) and he sent me the Growatt specific firmware file which has already been posted on this thread as I see now. I updated the firmware set the CAN protocol to Growatt and it worked straight away.
Yes, now working.. ThanksI think you need to use the return key after changing the parameters, then click on download before selecting set to all. That's how I was able to change the default battery capacity for mine.
I think you are meant to leave that one alone. The BMS Software guide says:
Current Calibration and Voltage Calibration is for quality control during manufacturing. (Do not click unless being permitted, or the BMS will be damaged, and SEPLOS will not responsible for the damage.)
NO , You do not want 3,65 as max..should i edit this to 58.4? so my battery will reach to full voltage
as my battery max is 3.65(eve 280k)
Total_voltage overvoltage protection 57.60 V
seplos support said i should no!
I typically use 54V for a 16S config. If you watch the testing that Andy did at the off grid garage, anything capacity past 3.4V per cell is very small, and your cells last longer if used between 20% and 80%.NO , You do not want 3,65 as max..
3,6 is safer
oh i agree, however, the op want high volt shutoff even higher, without knowing what he is actually doing and whyI typically use 54V for a 16S config. If you watch the testing that Andy did at the off grid garage, anything capacity past 3.4V per cell is very small, and your cells last longer if used between 20% and 80%.