Hi.
I setup a new system but i simply cant get it to charge my batteries after i discharged them to 19%
I tried with keep battries charged and without battery life set to 95%
asked
Very slow charging ESS - 2 Multiplus 2
Okay.
Found easy fix.
edit
/opt/victronenergy/dbus-systemcalc-py/delegates/dvcc.py
And remove the following line to remove pylontech quirks (Line 78)
0xB009: _pylontech_quirk,
It will not use values from BMS
Just dont update.
Otherwise the smart shunt is the way to go, they system is now ignoring the bns limits anyway. Makes no sense to connect it now.
Now it follows the BMS as all other.
And no hardcoded pylontech quirks
Hi,
can some tell me where I should change this ? Is there a Command line to an Multiplus GX ?
You can ssh into the GX.
https://www.victronenergy.com/live/ccgx:root_access
Once logged in you can run
nano /opt/victronenergy/dbus-systemcalc-py/delegates/dvcc.py
control+w to search for the line and remove it
"0xB009: _pylontech_quirk,"
As mentioned above if you update the GX you have to do this again.
Will submit a script that you can add to
rc.local later.
If you have the problem edit dvcc.py on the GX
Battery Temp. is 8°C.
Maybe derating Strategy for charging current (because of low Temperature or low Cell Voltage) by the BMS of the battery.
What type of battery is installed ? 4x US200C ?
You set the charging voltage to 52/51V (Pylontech?) and you are already at 52.5V so the battery should be full.
Is the battery selected as battery monitor in the system settings of the GX device?
At 52 Volt absorbtion (3.25 per cell) the battery is only 20% charged, but won't charge further because the voltage is not high enough
Well its not a pylontech ( it just reports as one)
I changed to the above and does not make a differece.
And yes the battery is used
The batteries i have
Pylontech's are 15S and this is advertised as a 16S. The voltages will be different.
Switch off optimized with battery life in the ESS settings slow charge under certain temps is a feature there. The GX isnt showing the ESS code for it but it may be a factor
Settings - ESS - optimised with battery life should be at the top.
There is a similar thread (with the same battery type I think) in the German space:
https://community.victronenergy.com/questions/176962/ess-lad-nur-mit-geringer-leistung.html
I suspect that there is a communication problem between the battery and the GX device.
That battery is not on the list of compatible battery and therefore not officially supported:
https://www.victronenergy.com/live/battery_compatibility:start
You might have to contact the seller or manufacturer of the battery to get support.
But if I not use the Can I expect if I only connect DC that the ESS will work. But currently It loads if I have more Power but no discharge in Case that the Gritmeter saw Load from the Grid. Status of the Multiplus is Idle. OK if the Battery have Issues with CAN bus, But Only DC should be work or not ?
The problem might be that batteries which spoof pylontech often want a much higher charge voltage but the system is hard limited to a voltage which only works for actual pylontechs, so your 3rd party batteries will never get a proper charge while they pretend to be a pylon.
There have been a few members caught out by this.
Here is a script to make it easy
https://github.com/thomasraabo/pylontech_workaround
Is this a Seplos battery?
It is a cernrss using the polyntech protocol
@Thomas Raabo , is it possible to get a v.2.90 or 2.92 venus version with your modification? Then i could install it over usb right?
now i activated the superuser and ssh, logged in, and started your skript. it was installed and i rebooted the gx. Now i am finished right? But in the future no updates or is it possible? Thanks
Updates will work with this script.
And yes your finished and Victron will now charge with values from bms
I found this solution here after I made my own, which I'll add here as it will not be affected by further updates from Victron, also it adds Details like cell voltages.
I basically wrote my own DBus service which reads the CAN messages from the battery and then publishes them as a generic BMS on the DBus.
https://github.com/ChristophPech/victron-gx-services
