I have a total of 6 Pytes E-Box48100R in parallel that are being monitored via ICM (Inverter Controle Management) software.

 

Now for some unknown reason I am experiencing that randomly the BMS of one of the batteries becomes non-responsive and the lights remains in the same position as they where. For example If the battery had a status of discharging with a SOC lights indicating 40% procent it will keep incorrectly showing that. Reason I am saying incorrectly is because I have noticed by measuring the current going through the battery that it continues to discharge and even charges to full when the sun starts to shine and the pv panels starts to produce power to charge the batteries.  So it seems that the BMS is doing its job but is simply not responding to console (RS232) commands neither displaying the correct status info through the lights.

In order to get the BMS back communicating and showing the correct info via its lights I have to restart the battery

 

Note These batteries have the same commands as pylontech although pylontceh are 15 cells and these are 16 cells batteries.

 

Has anyone seen this behavior before (Wither with Pytes, Pylontech or any other batteries)?  Any suggestion?

 

Screech

Update:

 

I have discovered that it is not neceassary to restart the battery unit get it teh BMS back to normal operation but I can send via the master unit the  command  "stat x" (with x being the ID # of the affected battery) and the battery will start responding back normally.