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Hi ... been running Quattro inverter with 6 pylontechs for 3 years. Few months ago had high voltage alarms signals when batteries reached 100%. Found 1 battery swollen. Firmware on batteries and all components were updated. Now struggling to get batteries charged. If there is no loads solar production drops. Charging of batteries only between 200 to 500w at any soc level. Excuse my lack of knowledge. I am not an installer. Thx
Did you remove the damaged battery from the bank?
What does the SOH say about the batteries on the GX?
What sized inverter do you have and what Pylontec modules are installed? I have usually only seen that type of faliure when there aren't enough batteries on the system.
Yes the damaged battery was removed.
On the gx the batteries SOH showed 92% if I am correct ad per my installer. He did say that when he connected a cable to each battery the batteries had deteriorated but could still be used. After the firmware on the batteries were updated from version 1 to 3.something, the problems started. Now I can only generate solar if there is load. The charge and discharge of the batteries show 200 to 500w, whereas previously it was according to the load or charge. My installer is looking for the old firmware to restore battery firmware to their old firmware.
Currently running 10kva Quattro, cerbox gx, 4 Pylontech 3.5 and 1 x 2.4 Pylontech
Check the CCL and DCL in the GX (under battery parameters) and see what they are reporting there.
But since you have pinpointed the firmware update on the batteries as where the problems started, it is likely that.
The other thing to try is to switch which battery is the master.
Can anyone assist with obtaining the old firmware versions for the Pylontech batteries.
Thank you
