Hi, I have noticed that since adding 2 more Seplos Mason kits to my setup that when charging from the grid using my multiplus2 3000/35 connected to CAN and a Cerbo the Grid graph in VRM is only showing the “To Battery” for 1 of the 3 batteries (expecting the 1.6 -1.8KWh but only seeing 0.6Kwh) and classing the other as direct usage. They are all working and show up correctly as 3 units and online via CAN, all are running the same firmware (latest 16.6) and are correctly set to Victron Protocol. I cant find where the data is being referenced from but it seems either the source seems to be incorrect and assuming its only showing as the first pack and not them collectively like other graphs do seem to correctly show.
Hi, I have exact the same problem. I don´t know if it is an issue or not. I have the Cerbo connected to Homeassistant and I use that energy dashboard. I have a workaround there by multiplying charged/discharged from battery by a factor three.
I try to get Seplos to correct the bug, but so far they are not giving a real answer. Maybe you can try too?
I am in contact with Seplos now. They sent me BMS firmware version 16.06.03. I tried it. No difference. Still only charged/discharged energy from the master, still not from the slave. All other reported values are correct, such as totals (e.g. power or current), averages (e.g. battery voltage) or min/max values (e.g. cell voltages).
I filled out the contact form on seplos.com and I contacted the supplier via aliexpress. I am in contact with both of them now. Both have sent 16.06.03
Ok some progress on this end, not sure if you consider this a workaround or just something that impacts the data and how its gathered so still no idea where the problem is.
In remote console go to Settings> system setup and check if you have Has DC system enabled.
Since disabling this, my values now show correctly in VRM
I saw this on Andy’s off grid garage on another topic so thought i would try it and hey presto it does impact how the seplos reports the data or at least how the poral reports the data, not sure why or who is having the issue but w work as show above
I had this option enabled. Seems strange that this must be switched off. I have DC system, batteries and Victron DC-DC solar charger.
Can you lookup the history values charged and discharged of the CAN-BMS in the console and see if you get the correct values. I see only the value of the master. I can tell because you can simply multiply the number of cycles (121) by the battery capacity (16kWh).
My main problem is that during charging on solar the consumed energy is totally wrong. That could be caused by a combination of the Seplos bug and the “has dc system” setting. I have a workaround in home assistant, so no real problem there. If the consumption calculation, and the consumption forecast are fixed with this setting I will be happy
I have DC solar charges also but mine are Victron VE.Direct connected to the Cerbo so i don’t think i need “Has DC system” enabled but i will look closer, what DC chargers are you using?
First preliminary result. Home assistant and VRM agree more or less about consumed energy while charging on the sun. That would be the first time! I will keep you posted after the first whole day.
I can say that @noisyboysie is a king. You saved my installation. Consumption is now accurately calculated, and in time the prediction will become accurate as well! Switching of "“Has DC system” did the trick!
I think I can understand why. This option tells VenusOS to rely on the battery to be able to calculate how much other DC-drain/production is involved. If you switch this setting off, VenusOS can rely on measurement from the MP2’s and the Victron solar charger, and maybe the Lynx shunt as well in order to calculate battery values properly. So it can completely disregard the buggy readings from Seplos battery.
By “buggy” i mean that Seplos only reports the charged / discharged energy from the master and it ignores the slaves! I still hope that Seplos fixes this error anyway, so that I can skip the workaround in Home Assistant.
To all in this thread, especially Rob:
thanks!
My night use is finally more than my day use…
Got 4 batteries, but I’ve never seen the kwh counters until I really needed to get these numbers because I am off grid and I need to prepare for the winter and I started investigating this dashboard thing. I thought it was a remnant of the ESS setting, as in my test I had a single battery hooked up to a single MP1, and that’s the same installation as now.
The kWh counters are not graphed or even mentioned in the advanced dashboard until you start adding widgets yourself.
I was curious already because the battery temperature only shows the BMS temperature, and not the batteries. And those widgets made the real temperatures also available.
To be clear: I don’t know who turned on the has DC system. It’s probably me, when going over the settings with my installer, so it was a long time ago (6 months). My installer set up my whole system, so I could move all my power stuff in a container, knowing I would have grid power within 6 months. Those 6 months are now 4 years.
But my thought was that I would make a lot of DC lighting.
I won’t. I mean, I want to but it needs to be decoupled from the battery anyway, either by plane fuser, but preferably a buck/boost.
I doubt I can put my 54V star-link straight to 51…55V.
Anyway, the SoC and mppt already helped me out, for december I planned an additional 16kWh/day forecasted (totalling 20kWh/day forecasted
. The basis for that is my shelly equipment, assuming I am going to need 20kWh of heating per day, and the day-to-day use can be covered by a generator. @robmeerwijk where I live now the winter has about twice as much forecasted average daily energy in the winter as the Netherlands (yes, I am assuming).
The plans and things I do (building my own home in another country) wou;ldn’t be easily possible without victron energy systems.
