diff --git a/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceController.java b/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceController.java
index da0f2e2fbe5..ee3f54f70e0 100644
--- a/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceController.java
+++ b/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceController.java
@@ -22,6 +22,7 @@ import android.net.Uri;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.PowerManager;
+import android.provider.Settings;
 import android.provider.SettingsSlicesContract;
 import android.widget.Switch;
 
@@ -101,6 +102,11 @@ public class BatterySaverButtonPreferenceController extends
 
     @Override
     public void onSwitchChanged(Switch switchView, boolean isChecked) {
+        // Cancel preference's check state once it's first time launch
+        if (isChecked && (Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.LOW_POWER_WARNING_ACKNOWLEDGED, 0) == 0)) {
+            mPreference.setChecked(false);
+        }
         setChecked(isChecked);
     }
 
diff --git a/tests/robotests/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceControllerTest.java
index 594de6a6e6a..881a18d6baf 100644
--- a/tests/robotests/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceControllerTest.java
@@ -30,6 +30,7 @@ import static org.mockito.Mockito.when;
 import android.content.Context;
 import android.content.Intent;
 import android.os.PowerManager;
+import android.provider.Settings;
 import android.provider.SettingsSlicesContract;
 
 import androidx.preference.PreferenceScreen;
@@ -75,6 +76,24 @@ public class BatterySaverButtonPreferenceControllerTest {
                 .isEqualTo(SettingsSlicesContract.AUTHORITY);
     }
 
+    @Test
+    public void onSwitchChanged_isCheckedButNotAcked_preferenceIsUnchecked() {
+        setLowPowerWarningAcked(/* acked= */ 0);
+
+        mController.onSwitchChanged(/* switchView= */ null, /* isChecked= */ true);
+
+        assertThat(mPreference.isChecked()).isFalse();
+    }
+
+    @Test
+    public void onSwitchChanged_isCheckedAndAcked_setPowerSaveMode() {
+        setLowPowerWarningAcked(/* acked= */ 1);
+
+        mController.onSwitchChanged(/* switchView= */ null, /* isChecked= */ true);
+
+        verify(mPowerManager).setPowerSaveModeEnabled(true);
+    }
+
     @Test
     public void updateState_lowPowerOn_preferenceIsChecked() {
         when(mPowerManager.isPowerSaveMode()).thenReturn(true);
@@ -126,4 +145,12 @@ public class BatterySaverButtonPreferenceControllerTest {
     public void isPublicSlice_returnsTrue() {
         assertThat(mController.isPublicSlice()).isTrue();
     }
+
+    // 0 means not acked, 1 means acked.
+    private void setLowPowerWarningAcked(int acked) {
+        Settings.Secure.putInt(
+                mContext.getContentResolver(),
+                Settings.Secure.LOW_POWER_WARNING_ACKNOWLEDGED,
+                acked);
+    }
 }