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[solved] 3rd party ESS with inverters


I'm a fresh Victron user trying to start with this ecosystem.

Currently I already own an 3rd party storage system with built-in inverters (Senec Home v3) and a grid-tied Fronius Symo. Energy measurement is done by the Senec system using a meter before grid connection.

I am able to read out every parameter and already started pushing this to the dBus on Venus OS installation.

But now I have no clue on how to plan further development: Should I simply count everything together to "emulate" an inverter in order to let Venus do the maths or should I directly skip this and switch to ESS mode 3?

I would really love to let Venus control my fresh Multiplus/Battery package on its own without writing own decision algorithms...

oxident asked
techmuc commented ·

1 Answer

VenusOs 2.90

Hallo erstmal.

Ich suche einen Download link für VenusOS 2.90 beta. Würde es gerne auf den Cerbo installieren, da ab 2.90 large verfügbar ist.

Hoffe es kann mir wer helfen.


mike1978 asked
Stefanie answered ·

1 Answer

Battery erroneously discharging

I'm hoping someone here might be able to shed some light on this issue. I have 2x 48v batteries that both have overkill solar BMSes installed. I'm currently pulling in 4.3kw of solar and using 1.2kw of ac load. The inverter is the only draw on the system. One of the batteries is charging at about 1.4kw, but the other one is showing a discharge of about 400w.

Do any of you have any idea why this would be?




dancing-skeptic asked
Alexandra answered ·

1 Answer

EV Charger integration: OpenEVSE


this might be interesting to some of you. I wrote a simple service which polls data from the OpenEVSE (EV Charger, mqtt/json) and puts the data on dbus.


ju asked
jurekz answered ·

2 Answers

Increase MFD App/Window on Simrad


Is there no way to increase the size of these info panels on my MFD? I read it’s an HTML5 app running on my Simrad EVO3S. I have to squint to see the data!

SUGGESTION - Maximize Window (a button, like fullscreen on youtube) I mean it’s HTML (width=100%)


octafish asked
octafish edited ·

0 Answers

RS 48V 6000VA Smart Solar + MPPT Blue Solar 150/70 + VenusGX


I would like to add a second string of panels and also upgrade the inverter that I use, as I have growing peak ac power needs.

My current setup:

  • Venus GX
  • 13.4 Kw/h of 48V Pylontech lithium batteries
  • Multiplus II 48V 3000VA (I now require something bigger >=5000VA)
  • MPPT Blue Solar 150/70
  • 4.5 Kw of panels (I have plenty space with no shadows for a second string)

I would like to:

  • Buy RS 48V 6000VA Smart Solar
  • Add 8x450W panels in a single string (400V) connected the RS 48V 6000VA
  • Have the Multiplus II just working as a charger from the generator (in charger mode)

My specific questions:

  1. Can the charging work with the RS and the Blue Solar properly coordinating via the Venus GX?
  2. Can the Multiplus II work alongside the RS (in charger mode)?

As an alternative, I've also evaluated to add a second Multiplus II in parallel and add PV's via AC coupling, having the parallel Multiplus II doing the charge but as the RS 48V 6000V is such a good value, I would rather keep it with DC coupling as I have zero experience with AC coupling and I've read some mixed experiences.


lluisball asked
lluisball answered ·

2 Answers

Daten der zweiten Batterie


ich habe gerade ein ESS System aufgebaut. Dieses besteht aus 1x Multiplus 2 5000, 2 Batterieblöcken à 16x 280Ah und einen Raspi mit VenusOs. Die Daten Grid und Inverter bekomme ich über MQTT und ein Pythonscript rein, die vom BMS über

Meine Frage ist, bekomme ich die Einzelwerte, sprich die Voltzahlen der einzelnen Zellen auch irgendwie aus dem System ausgelesen? Für die erste Zelle funktioniert das über Node Red soweit.

Die Parameter für SOC, Gesamtspannung, Temperatur usw. bekomme ich ebenfalls über Node Red aus dem Victron. Nur eben die Einzelspannungen des zweiten Blocks nicht. Gibts da eine Möglichkeit?

Guido Schneider asked

0 Answers

Kann die Bosch bsec Library nicht kompilieren

root@raspberrypi2:/opt/bsec_bme680-homie# ./
Already applied.
/usr/lib/gcc/arm-ve-linux-gnueabi/9.3.0/../../../../arm-ve-linux-gnueabi/bin/ld: cannot find -lm
/usr/lib/gcc/arm-ve-linux-gnueabi/9.3.0/../../../../arm-ve-linux-gnueabi/bin/ld: cannot find -lrt
/usr/lib/gcc/arm-ve-linux-gnueabi/9.3.0/../../../../arm-ve-linux-gnueabi/bin/ld: cannot find -lc
collect2: error: ld returned 1 exit status

erni asked
erni published ·

3 Answers

Multiple GX instances over LAN for same inverter?

Is it possible to have multiple GX devices displaying and sharing the same inverter information over Modbus TCP?

I have inverter and Cerbo next to the main eletric panel and those are located in house's technical rooms. In order to monitor the system in other rooms one needs to use mobile device or web browser.

It would make sense to get some rasperrys running VenusOS and hook them over local LAN into living space and provide the same interface on those. Maybe some into TV video inputs, would be nice to see visualization in TV's PIP-screen.

From other questions I understood that it's not possible, but could it be supported in coming releases? What is preventing it?



Juha Tuomala asked
Juha Tuomala commented ·

1 Answer

Schaltung von Actoren/Verbrauchern je nach Solarüberschuss

Ausgangsituation: ESS mit Cerbo GX, MPPT 250/100, MPII 5000 und ein RaspiPI4

Ist es möglich (node red?) Aktoren je nach Überschuss zu schalten? Den Raspi4 habe ich rumliegen, reicht es ihn im gleichen LAN zu betreiben wie die ESS? Oder muss ich ein Kabel Modbus/VE-Direct/USB oder ähnlich haben?

Als Aktoren dachte ich mir so schaltbare Steckdosen wie von AVM/Fritz.

Gruß, Matthias

rossix asked
jailbraik answered ·

5 Answers

Prozentanzeige im Venus OS stimmt nicht


Kann mir jemand sagen wie ich meine Prozentanzeige im Venus OS soo Einstellen kam, das es tatsächlich zum Strand der Akku Packs passt?

So sieht es zur Zeit aus. Venus sagt 42% und der Akku hat tatsächlich nur 2 %

. Ich habe kein shunt verbaut


Image Caption

martinka asked
netrange commented ·

6 Answers

Large OS Node-Red password

Hi Everybody,

want to set a password for Node-Red but I don't know how or where respectively. I understood that I have to modify settings in the settings.js but I cant find it.

Please can somone give me a hont hot to set up a password if it is possible at all?

Thanks in advance

senna1976 asked
janieronen commented ·

1 Answer

Import Venus GX configuration

Hi everyone,

Is it possible to import a pre-made configuration on a Venus GX device ? To save time at production level.

A question was asked a year ago, and it was, according to @mvader (Victron Energy) on the list (Link), but I can't find anything on my GX that would do the job.

Thanks in advance for your answer.

Best regards,

Danakil asked
Kevin Windrem answered ·

3 Answers

Lässt sich ein Cotek SB 2000 Wechselrichter einbinden?

Ein Cotek Kombigerät (Sinus Wechselrichter/Ladegerät) soll eingebunden werden, so daß er im Venus OS erscheint. Das Gerät verfügt über zahlreiche Schnittstellen und auch die Platinenarchitektur erinnert stark an die Multiplus Geräte.

Wie ist es möglich die CAN oder RS232 Schnittstelle des Cotek Gerätes für Venus OS zu nutzen? Vielleicht über Pegelwandler (falls nötig), ein spezielles Kabel etc?

Mischa Lietzijewitsch asked
Mischa Lietzijewitsch answered ·

2 Answers

ess double output to grid

hello rick here i am having a problem with my setup. i have a duplicate output on the grid. it reads l1 correctly with the victron current transformer. but gives a double reading from the solar panels. I am using an et112 meter to read my PV inverter. also when the solar panels are working I don't read ac load.


dgc-gaming asked

0 Answers


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