diff --git a/src/com/android/settings/dashboard/conditional/BatterySaverCondition.java b/src/com/android/settings/dashboard/conditional/BatterySaverCondition.java
index 618fed3a81b..d1135784d4a 100644
--- a/src/com/android/settings/dashboard/conditional/BatterySaverCondition.java
+++ b/src/com/android/settings/dashboard/conditional/BatterySaverCondition.java
@@ -23,6 +23,7 @@ import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
 import com.android.settings.core.SubSettingLauncher;
 import com.android.settings.fuelgauge.batterysaver.BatterySaverSettings;
+import com.android.settingslib.fuelgauge.BatterySaverUtils;
 
 public class BatterySaverCondition extends Condition {
     public BatterySaverCondition(ConditionManager manager) {
@@ -68,7 +69,8 @@ public class BatterySaverCondition extends Condition {
     @Override
     public void onActionClick(int index) {
         if (index == 0) {
-            mManager.getContext().getSystemService(PowerManager.class).setPowerSaveMode(false);
+            BatterySaverUtils.setPowerSaveMode(mManager.getContext(), false,
+                    /*needFirstTimeWarning*/ false);
             refreshState();
         } else {
             throw new IllegalArgumentException("Unexpected index " + index);
diff --git a/src/com/android/settings/fuelgauge/BatterySaverModeVoiceActivity.java b/src/com/android/settings/fuelgauge/BatterySaverModeVoiceActivity.java
index 3fc0cd823ee..04624bb8c75 100644
--- a/src/com/android/settings/fuelgauge/BatterySaverModeVoiceActivity.java
+++ b/src/com/android/settings/fuelgauge/BatterySaverModeVoiceActivity.java
@@ -16,14 +16,13 @@
 
 package com.android.settings.fuelgauge;
 
-import android.content.Context;
+import static android.provider.Settings.EXTRA_BATTERY_SAVER_MODE_ENABLED;
+
 import android.content.Intent;
-import android.os.PowerManager;
 import android.util.Log;
 
 import com.android.settings.utils.VoiceSettingsActivity;
-
-import static android.provider.Settings.EXTRA_BATTERY_SAVER_MODE_ENABLED;
+import com.android.settingslib.fuelgauge.BatterySaverUtils;
 
 /**
  * Activity for modifying the {@link android.os.PowerManager} power save mode
@@ -35,9 +34,9 @@ public class BatterySaverModeVoiceActivity extends VoiceSettingsActivity {
     @Override
     protected boolean onVoiceSettingInteraction(Intent intent) {
         if (intent.hasExtra(EXTRA_BATTERY_SAVER_MODE_ENABLED)) {
-            PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
-            if (powerManager.setPowerSaveMode(
-                    intent.getBooleanExtra(EXTRA_BATTERY_SAVER_MODE_ENABLED, false))) {
+            if (BatterySaverUtils.setPowerSaveMode(this,
+                    intent.getBooleanExtra(EXTRA_BATTERY_SAVER_MODE_ENABLED, false),
+                    /*needFirstTimeWarning=*/ true)) {
                 notifySuccess(null);
             } else {
                 Log.v(TAG, "Unable to set power mode");
diff --git a/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceController.java b/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceController.java
index 1d427c9f953..b23a5f08a70 100644
--- a/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceController.java
+++ b/src/com/android/settings/fuelgauge/batterysaver/BatterySaverButtonPreferenceController.java
@@ -21,13 +21,13 @@ import android.os.PowerManager;
 import android.support.annotation.VisibleForTesting;
 import android.support.v7.preference.Preference;
 
-import com.android.settings.fuelgauge.BatteryBroadcastReceiver;
 import com.android.settings.fuelgauge.BatterySaverReceiver;
 import com.android.settings.widget.TwoStateButtonPreferenceController;
 import com.android.settingslib.core.lifecycle.Lifecycle;
 import com.android.settingslib.core.lifecycle.LifecycleObserver;
 import com.android.settingslib.core.lifecycle.events.OnStart;
 import com.android.settingslib.core.lifecycle.events.OnStop;
+import com.android.settingslib.fuelgauge.BatterySaverUtils;
 
 /**
  * Controller to update the battery saver button
@@ -73,7 +73,8 @@ public class BatterySaverButtonPreferenceController extends
 
     @Override
     public void onButtonClicked(boolean stateOn) {
-        mPowerManager.setPowerSaveMode(stateOn);
+        // This screen already shows a warning, so we don't need another warning.
+        BatterySaverUtils.setPowerSaveMode(mContext,  stateOn, /*needFirstTimeWarning*/ false);
     }
 
     @Override
@@ -85,4 +86,4 @@ public class BatterySaverButtonPreferenceController extends
     public void onBatteryChanged(boolean pluggedIn) {
         setButtonEnabled(!pluggedIn);
     }
-}
\ No newline at end of file
+}
diff --git a/src/com/android/settings/fuelgauge/batterytip/actions/BatterySaverAction.java b/src/com/android/settings/fuelgauge/batterytip/actions/BatterySaverAction.java
index bb526236bb9..6eff47a6b4d 100644
--- a/src/com/android/settings/fuelgauge/batterytip/actions/BatterySaverAction.java
+++ b/src/com/android/settings/fuelgauge/batterytip/actions/BatterySaverAction.java
@@ -17,16 +17,13 @@
 package com.android.settings.fuelgauge.batterytip.actions;
 
 import android.content.Context;
-import android.os.PowerManager;
 
 import com.android.internal.logging.nano.MetricsProto;
+import com.android.settingslib.fuelgauge.BatterySaverUtils;
 
 public class BatterySaverAction extends BatteryTipAction {
-    private PowerManager mPowerManager;
-
     public BatterySaverAction(Context context) {
         super(context);
-        mPowerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
     }
 
     /**
@@ -34,7 +31,7 @@ public class BatterySaverAction extends BatteryTipAction {
      */
     @Override
     public void handlePositiveAction(int metricsKey) {
-        mPowerManager.setPowerSaveMode(true);
+        BatterySaverUtils.setPowerSaveMode(mContext, true, /*needFirstTimeWarning*/ true);
         mMetricsFeatureProvider.action(mContext,
                 MetricsProto.MetricsEvent.ACTION_TIP_TURN_ON_BATTERY_SAVER, metricsKey);
     }