Hi, I have a lifelynk x installed and running for just under a year. I’ve had a few issues but still very happy with it I decided I wanted to add some external batteries and had the opportunity to buy some used pylontech us2000. Since the lifelynk is fundamentally running the Sunsynk software I assumed it would be no problem. I checked with support and they said no. Only 3 batteries are certified. I’m not convinced they won’t work but has anyone added some extra batteries ?