Regular Member
Joined: 25/06/2018
Location: AustraliaPosts: 67
| Posted: 03:26pm 22 Dec 2025 |
I also made use of the government battery rebate and chose a Sigenergy system. My installation consists of a 10 kW single-phase inverter paired with a 24 kWh battery, which has been running since October. The system includes three strings, each with twelve 440 W panels connected to the inverter, sized to meet winter demand and allow for future EV charging.
Like other owners of SP inverters, I’m expecting a replacement sometime early next year. So far, the inverter’s AC connector has shown no signs of overheating, even under sustained loads of 4–6 kW, with connector temperatures typically remaining below 30 °C. The replacement inverter is expected to come with a 12-year warranty rather than the standard 10 years, and hopefully the company will be around to support it long term.
Beyond the mobile app, I use Home Assistant, which pulls data via Modbus over Ethernet (enabled by the installer during commissioning). I’ve also built a simple temperature monitoring setup using an ESP32-C3 and a DS18B20 sensor attached to the inverter’s AC connector. In Home Assistant, I’ve configured an automation to send alerts to my phone if the connector temperature exceeds a set threshold.
The battery cell temperature generally sits around 30 °C. Overall system self-consumption ranges between 150 and 200 W, averaging roughly 170 W.
