Support AC-3.0 charge/discharge rates (#39)

custom_components/givenergy_local/entity.py

@@ -63,7 +63,12 @@ def inverter_model(self) -> Model:
     @property
     def inverter_max_battery_power(self) -> Model:
         """Get the maximum battery charge/discharge power for this model."""
-        return 3600 if self.inverter_model == Model.Gen2 else 2600
+        if self.inverter_model == Model.Gen2:
+            return 3600
+        elif self.inverter_model == Model.AC:
+            return 3000
+        else:
+            return 2600
 
 
 class BatteryEntity(CoordinatorEntity[Plant]):

custom_components/givenergy_local/number.py

@@ -2,7 +2,6 @@
 from __future__ import annotations
 
 from givenergy_modbus.client import GivEnergyClient
-from givenergy_modbus.model.inverter import Model
 from homeassistant.components.number import (
     NumberDeviceClass,
     NumberEntity,
@@ -147,17 +146,10 @@ def watts_to_api_value(self, watts: int) -> int:
         inverter capabilities.
         """
         target_value = int(watts / self.battery_power_step)
+        max_step = int(self.inverter_max_battery_power / self.battery_power_step)
 
-        if self.inverter_model == Model.Gen2:
-            # Gen2 inverters: Numbering stops at 36, then jumps to 50 = 3.6kW
-            if target_value > 36:
-                target_value = 50
-        else:
-            # Everything else: Numbering stops at 30, then jumps to 50 = 2.6kW
-            if target_value > 30:
-                target_value = 50
-
-        return target_value
+        # The API always jumps to 50 to represent the maximum possible value
+        return 50 if target_value > max_step else target_value
 
 
 class InverterBatteryChargeLimitNumber(InverterBatteryPowerLimitNumber):