I have 4x Liontron LX48-100 in my system.
Over 4 month it work correctly. And the battaries charged on the same level until 100% SOC.
Meanwhile only 3 of them are charged to 100%. The fours battery stoped at approx. 60%.
The cell voltages looks good. The cell ballancing is ok. But the SOC and battery voltage doesn´t fits together.
I assume that inside the BMS the SOC and voltage are correspondig.
A reset of the effected Lx48-100 don´t help.
Has someone an idea?
Is that wiring correct?
Normally the CAN-bus to the Victron system is connected to the first or last battery, not somewhere in the middle.
Also add a picture of the DC wiring.
RS-485 network consists of multiple nodes connected in parallel to a bus, all connected on the same A/B wires, so doesn’t matter where the battery 1 or 2 or 3 or 4 is positioned.
And looking at the switches, Victron system is indeed connected to the battery with index 1.
@Darth1970
You can try charging just one battery pack. Based on your picture, that’s number 1 with the BMS cable connected to the CAN port. Simply turn off the others and wait to see if each one reaches 100%. If that works, you can turn the others back on. If errors occur, your only option is to analyze the problem via the RS232 port using the BMS tools.
It is only one pack with the problem. I analyzed via RS232.
The SOC is 55% but cell voltage is 3,4V. This should be 100%.
Discharging to 3,2V and then charging back to 3,4V
—> some issue
Meanwhile I am running out of ideas.
Check the parameters for each pack individually. Caution: When reading and writing via RS232, you only get the parameters of the battery connected to RS232. The BMS tools show the cell values of all batteries, but only the charging parameters of the RS232 connected ones.
