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  1. I have updated both the Pylontech and inverter firmware - nothing helps. There is a fundamental problem with RS485 comms between Growatt and Pylontech. Both companies accuses the other of being uncooperative. Growatt's strategy is to keep BS-ing users, telling them to try this and then that - like updating firmware to buy time, well knowing that there is a fundamental technical flaw. Until the user is so exhausted that they just give up. Worst technical support of any Chinese company.
  2. I recently bought a Growatt SPF 5000TL HVM inverter and successfully connected it to 3 x Pylontech US3000 batteries through RS485 communication. Screen shows Li for Lithium battery. Everything seems to work OK except that MPPT charging current does to go higher than 32A no matter what I do: increasing the size of the solar array, discharging the battery bank to a low SOC, changing Program 14 (charger source priority), updating the firmware, etc. I then changed to 4 x Pylontech US2000s and same problem, but in this case the MPPT charging current does not go higher than 25A. Anyone else experien
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