diff --git a/apps/predbat/fox.py b/apps/predbat/fox.py
index 6767ead02..1657e07c1 100644
--- a/apps/predbat/fox.py
+++ b/apps/predbat/fox.py
@@ -1792,7 +1792,7 @@ async def publish_data(self):
             self.dashboard_item(
                 entity_name_sensor + "_" + sn.lower() + "_battery_soh",
                 state=soh_fraction,
-                attributes={"friendly_name": f"Fox {sn} Battery State of Health", "unit_of_measurement": "*", "device_class": "battery", "state_class": "measurement", "icon": "mdi:battery-heart"},
+                attributes={"friendly_name": f"Fox {sn} Battery State of Health", "unit_of_measurement": "*", "state_class": "measurement", "icon": "mdi:battery-heart"},
                 app="fox",
             )
 
diff --git a/apps/predbat/tests/test_fox_api.py b/apps/predbat/tests/test_fox_api.py
index e5245cce8..b98bec5d6 100644
--- a/apps/predbat/tests/test_fox_api.py
+++ b/apps/predbat/tests/test_fox_api.py
@@ -5538,7 +5538,7 @@ def test_publish_data_battery_soh(my_predbat):
     assert soh_entity in fox.dashboard_items, f"battery_soh entity not found in {list(fox.dashboard_items.keys())}"
     assert fox.dashboard_items[soh_entity]["state"] == 0.95, f"Expected 0.95, got {fox.dashboard_items[soh_entity]['state']}"
     assert fox.dashboard_items[soh_entity]["attributes"]["unit_of_measurement"] == "*"
-    assert fox.dashboard_items[soh_entity]["attributes"]["device_class"] == "battery"
+    assert "device_class" not in fox.dashboard_items[soh_entity]["attributes"]
     assert fox.dashboard_items[soh_entity]["attributes"]["state_class"] == "measurement"
     assert fox.dashboard_items[soh_entity]["attributes"]["icon"] == "mdi:battery-heart"