diff --git a/haos-addon/config.yaml b/haos-addon/config.yaml
index e3f0f50..4d7af5f 100644
--- a/haos-addon/config.yaml
+++ b/haos-addon/config.yaml
@@ -1,5 +1,5 @@
 name: ShineBridge
-version: "1.7.3"
+version: "1.7.4"
 slug: shinebridge
 description: Growatt Wechselrichter lokal in Home Assistant — Modbus TCP via ShineLAN-X, MQTT Discovery, Web UI
 url: https://gitea.bitfire.work/retr0/shinebridge
diff --git a/haos-addon/src/main.py b/haos-addon/src/main.py
index e54d597..56ab615 100644
--- a/haos-addon/src/main.py
+++ b/haos-addon/src/main.py
@@ -245,6 +245,14 @@ def _poll_loop(inv_cfg: Dict[str, Any], stop: threading.Event):
         if values and "grid_power" not in values and "import_kwh" in values and "total_power" in values:
             values["grid_power"] = values["total_power"]
 
+        # Growatt SPH: beide Batterie-Register können gleichzeitig != 0 sein (Messartefakt).
+        # Batterie kann physikalisch nur laden ODER entladen — kleineren Wert auf 0 setzen.
+        if values and "bat_charge_power" in values and "bat_discharge_power" in values:
+            if values["bat_charge_power"] >= values["bat_discharge_power"]:
+                values["bat_discharge_power"] = 0.0
+            else:
+                values["bat_charge_power"] = 0.0
+
         # EMS: PV-Überschuss aus anderen Geräten holen und Ladestrom regeln
         if ems is not None and values is not None:
             pv_surplus = _get_pv_surplus()