diff --git a/homeassistant/components/teslemetry/number.py b/homeassistant/components/teslemetry/number.py
index 7551529006b..592c20c3e4a 100644
--- a/homeassistant/components/teslemetry/number.py
+++ b/homeassistant/components/teslemetry/number.py
@@ -82,7 +82,7 @@ ENERGY_INFO_DESCRIPTIONS: tuple[TeslemetryNumberBatteryEntityDescription, ...] =
         requires="components_battery",
     ),
     TeslemetryNumberBatteryEntityDescription(
-        key="off_grid_vehicle_charging_reserve",
+        key="off_grid_vehicle_charging_reserve_percent",
         func=lambda api, value: api.off_grid_vehicle_charging_reserve(int(value)),
         requires="components_off_grid_vehicle_charging_reserve_supported",
     ),
diff --git a/homeassistant/components/teslemetry/strings.json b/homeassistant/components/teslemetry/strings.json
index 98b1f7f1932..b1b794404f4 100644
--- a/homeassistant/components/teslemetry/strings.json
+++ b/homeassistant/components/teslemetry/strings.json
@@ -254,7 +254,7 @@
       "charge_state_charge_limit_soc": {
         "name": "Charge limit"
       },
-      "off_grid_vehicle_charging_reserve": {
+      "off_grid_vehicle_charging_reserve_percent": {
         "name": "Off grid reserve"
       }
     },
diff --git a/tests/components/teslemetry/snapshots/test_number.ambr b/tests/components/teslemetry/snapshots/test_number.ambr
index 7ead67a1e95..f33b5e15d30 100644
--- a/tests/components/teslemetry/snapshots/test_number.ambr
+++ b/tests/components/teslemetry/snapshots/test_number.ambr
@@ -90,8 +90,8 @@
     'platform': 'teslemetry',
     'previous_unique_id': None,
     'supported_features': 0,
-    'translation_key': 'off_grid_vehicle_charging_reserve',
-    'unique_id': '123456-off_grid_vehicle_charging_reserve',
+    'translation_key': 'off_grid_vehicle_charging_reserve_percent',
+    'unique_id': '123456-off_grid_vehicle_charging_reserve_percent',
     'unit_of_measurement': '%',
   })
 # ---