Home Assistant adds controls for a Zonneplan home battery’s maximum charging and discharging power, backup energy reserve and minimum price difference for day-ahead trading. Each setting follows the battery’s reported capabilities, and the backup-reserve control is disabled by default.
Power limits apply in home-optimization mode, while the trading threshold applies in arbitrage mode. Each edit first checks the battery’s current mode, preventing a settings change from silently switching it. Erwin Douna adds the controls; he notes that the controls have not been tested against a real battery.