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I didn't write the Seplos BMS software, I am just a layman observing it's behaviour.
The only way you are going to satisfy your curiosity is to do what I did, stay up late, log onto the BMS directly with the RS485 cable and watch what happens when the battery nears capacity.
You'll then get the answer you are looking for and see if it's "magic" or if I have made it up.
I am not going to get up at 4 in the morning and do it for you my friend.
You'll then get the answer you are looking for and see if it's "magic" or if I have made it up.
I am not going to get up at 4 in the morning and do it for you my friend.
The answer from Fogstar was crisp.
My hypothesis, supported by the graphs I shared, is that this particular data stream is being pre-processed by the Solis. I am not going to criticise anyone for sharing conclusions in good faith. 🙂
There's no benefit for anyone to investigate.
I will focus my effort to get my jk balancer working..
8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kw export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; 100Amp head, HA lab on mini PC
Thanks, so the consequence is Fogstar either do not know or did do not care enough to state it to me. My question was clear and I was not pushing for a yes or a no.
Best to keep the config as is.
8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kw export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; 100Amp head, HA lab on mini PC
While the sun was shining yesterday my batteries got to 100% for 20 minutes or so and my inverter was showing that 0.5A was going to the battery. At the end of those 20 mins the cells were within 2mA of being perfectly balanced but the washing machine went on so I didn't see how long it would take for them to balance perfectly.
I also found the graph on the Solis cloud webpage that shows the battery details (Device Overview: Battery) and I can see that at night when it gets to 100% and the full charge stops there is a period afterwards when it charges at 0.5A, the same as it is showing for yesterday when I was checking the screen on the inverter and battery.
This is last nights graph at 2.01
Which continued at 0.5A until 2.41.
I can also see that the battery is at about 53.5V when there has been no charge reported for a couple of hours, which from my understanding doesn't look like the battery is sitting at a high voltage when the BMS reports it is fully charged?
After much faffing about I got these charts from my setup from the solis. I'm not sure if they are any help? But as for charge parameters I don't know how to get them let alone adjust. (This is 2 Fogstar 16 KWh in parallel with solis * KW inverter)
After much faffing about I got these charts from my setup from the solis. I'm not sure if they are any help? But as for charge parameters I don't know how to get them let alone adjust. (This is 2 Fogstar 16 KWh in parallel with solis * KW inverter)
My conclusion was that the Solis (via Soliscloud but also using local modbus) is not reporting the raw power, there´s some sort of moving average type of transform.
I am attaching the chart of my Seplos BMS data (and something is not looking right with my JK balancer). The Solis current reading is showing very sharp changes (orange) and the current reading that is direct from the Seplos bms (green) is showing less sharp drops and even smoother climbs. I am not doing any transforms in the data like no offsets, but the timings do not seem to match the set periods on the Solis, that are as follows:
4:01-4:51 25A up to 98%
4:51-5:01 10A up to 100%
8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kw export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; 100Amp head, HA lab on mini PC
Sorry should have said the BMS is not Seplos but Pace with JK balancer.
I am aware. But is your chart direct from a Pace BMS app?
I managed to set the parameter on my JK balancer. The iphone app worked after resetting the connection (the android was not). So the balancing may get sorted tonight. My earlier chart was plotted using Home Assistant, with most data acquired directly via bluetooth..
The screenshot below is from the jk app.
This post was modified 3 weeks ago 4 times by Batpred
8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kw export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; 100Amp head, HA lab on mini PC
