Seplos BMS

I'm in the same boat with the same Solis inverter. Following this closely 😁

Sweet that’s sounding promising. I must check do I have that battery option. Do you have a copy of that Solis firmware?

Has anyone noticed battery cycle counter in seplos software. I am not sure how it works or waht it counts as in one day it counted 4 cycles even though there was not even one.

Thanks @reklamos if needed I’ll come back to you - how’s it been running?

The setting are confusing on Seplos. Chinglish translation does not help either. Cumulative discharge is at 20% and does not allow me to change it. But today I have not lost a single cycle so not sure what is going on. Is there a document that explains all the settings?

We had a good day today with sun and I was able to track Seplos in operation. Seems like AoBo battery profile is working as expected. Once the battery was getting close to full SOC and coltage breached thresholds Seplos told Solis to throtle down and I could see that the charge limitation was changes to 10A on Solis. Once the voltage dropped the limits were raised back to normal. It is still in testing phase but does look primising.

I got the manual and am logged in with admin/admin

hi

great discussion, big fan of Seplos here also :)

for ex. i have 3 used cell 60ah in parallel 14s, what setting should i use for seplos bms measure the real soh ?

Finally it got calibrated, here's what worked for me:

I've set battery rated capacity and Soc in software to whatever battery rating is and also remaining capacity alarm to 10%(I am not sure if this is needed but with original rating it does not discharge low enough, even with 10% my cell were over 3.1V)

Discharged the battery till it stoped, then charged it at constant rate at 20Amps overnight. Once some cells reached monomer high voltage alarm, the charge rate dropped to 10Amps but it still kep charging. At this point sock was 74% the remaining capacity was also was not close to what was rated . It still kep charging at 10Amps and once it reached the overvoltage alarm the charging stopped, both SOC and Remaining capacity got adjusted, and that was it.

I have been told by Seplos support that you have to set battery rating within 20Ah range of battery capacity otherwise calibration may fail.

If you get errors while trying to download new settingh then use Set all button at the top.

Just dont forger to raise remaining capacity alarm from 10% once calibration finished.

As I said previously, if "talking" correctly, the inverter becomes completely dumb and therefore gets it's SOC from the Seplos. Your setup has meant that the inverter is calculating the SOC from the battery voltage it sees.

Maybe it's worth trying to engage with the engineer who @garo is working with, to try and get to a point that the Seplos fully supports the Solis.

Recklamos you seem to be the trailblazer on the Solis / Seplos journey and well done on the progress you have made.

When you get a final configuration that you are happy with would it be possible to show the inverter and Seplos S/W settings you utilised? I think a few of us are slightly behind you, (I got my batteries over the last two days and currently have the first 8 top balancing).

Goes without saying that this is for info only and is what works for you but may not be optimal for others.

Finally got the time to get up and running - had to change the SOC to get it to discharge and a reset but copying reklamos settings for the Solis and it’s discharging away - I’ll have to read through here but I’ll have questions re settings once it does a few cycles. Thanks to all for the help, it sure it nice to see more then 1.2 kW being discharged