chore: default precharge overhang feature flag to false

Co-authored-by: MaStr <1036501+MaStr@users.noreply.github.com>

Author: Copilot

config/batcontrol_config_dummy.yaml

@@ -28,7 +28,7 @@ battery_control_expert:
   soften_price_difference_on_charging: False # enable earlier charging based on a more relaxed calculation
                                              # future_price <= current_price-min_price_difference/soften_price_difference_on_charging_factor
   soften_price_difference_on_charging_factor: 5
-  enable_precharge_overhang: true # Feature flag for charging overflow before the price turning point
+  enable_precharge_overhang: false # Feature flag for charging overflow before the price turning point
   max_charge_loss_factor: 0.1 # Assume up to 10% charging losses for slot planning
   round_price_digits: 4 # round price to n digits after the comma
   production_offset_percent: 1.0 # Adjust production forecast by a percentage (1.0 = 100%, 0.8 = 80%, etc.)

src/batcontrol/logic/default.py

@@ -30,7 +30,7 @@ def __init__(self, timezone: datetime.timezone = datetime.timezone.utc,
         self.soften_price_difference_on_charging = False
         self.soften_price_difference_on_charging_factor = 5.0  # Default factor
         self.max_charge_loss_factor = 0.1
-        self.enable_precharge_overhang = True
+        self.enable_precharge_overhang = False
         self.timezone = timezone
         self.interval_minutes = interval_minutes
         self.common = CommonLogic.get_instance()

tests/batcontrol/logic/test_default.py

@@ -328,6 +328,7 @@ def test_charge_rate_calculation_with_remaining_time(self):
 
     def test_recharge_overhang_is_charged_before_turning_point(self):
         """Test that only the overhang is charged when multiple slots are required."""
+        self.logic.enable_precharge_overhang = True
         self.logic.max_charge_loss_factor = 0.1
         self.logic.set_calculation_parameters(
             CalculationParameters(