diff --git a/res/values/strings.xml b/res/values/strings.xml
index 6398943e1a6..7695335ceca 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -5963,8 +5963,10 @@
     <string name="history_details_title">History details</string>
     <!-- Preference title for advanced battery usage [CHAR LIMIT=40] -->
     <string name="advanced_battery_preference_title">View battery usage</string>
-    <!-- Preference summary for advanced battery usage [CHAR LIMIT=40] -->
-    <string name="advanced_battery_preference_summary">View usage for past 24 hours</string>
+    <!-- Preference summary for advanced battery usage, for past 24 hours [CHAR LIMIT=40] -->
+    <string name="advanced_battery_preference_summary_with_hours">View usage for past 24 hours</string>
+    <!-- Preference summary for advanced battery usage, from last full charge [CHAR LIMIT=40] -->
+    <string name="advanced_battery_preference_summary">View usage from last full charge</string>
 
     <!-- Activity title for battery usage details for an app. or power consumer -->
     <string name="battery_details_title">Battery usage</string>
diff --git a/src/com/android/settings/fuelgauge/PowerUsageSummary.java b/src/com/android/settings/fuelgauge/PowerUsageSummary.java
index 326113e2313..19a801110c0 100644
--- a/src/com/android/settings/fuelgauge/PowerUsageSummary.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageSummary.java
@@ -52,10 +52,13 @@ import java.util.List;
 public class PowerUsageSummary extends PowerUsageBase implements
         BatteryTipPreferenceController.BatteryTipListener {
 
-    private static final String KEY_BATTERY_ERROR = "battery_help_message";
-
     static final String TAG = "PowerUsageSummary";
 
+    @VisibleForTesting
+    static final String KEY_BATTERY_ERROR = "battery_help_message";
+    @VisibleForTesting
+    static final String KEY_BATTERY_USAGE = "battery_usage_summary";
+
     @VisibleForTesting
     static final int BATTERY_INFO_LOADER = 1;
     @VisibleForTesting
@@ -78,6 +81,8 @@ public class PowerUsageSummary extends PowerUsageBase implements
     boolean mNeedUpdateBatteryTip;
     @VisibleForTesting
     Preference mHelpPreference;
+    @VisibleForTesting
+    Preference mBatteryUsagePreference;
 
     @VisibleForTesting
     final ContentObserver mSettingsObserver = new ContentObserver(new Handler()) {
@@ -154,12 +159,10 @@ public class PowerUsageSummary extends PowerUsageBase implements
         setAnimationAllowed(true);
 
         initFeatureProvider();
+        initPreference();
 
         mBatteryUtils = BatteryUtils.getInstance(getContext());
 
-        mHelpPreference = findPreference(KEY_BATTERY_ERROR);
-        mHelpPreference.setVisible(false);
-
         if (Utils.isBatteryPresent(getContext())) {
             restartBatteryInfoLoader();
         } else {
@@ -248,6 +251,18 @@ public class PowerUsageSummary extends PowerUsageBase implements
                 .getPowerUsageFeatureProvider(context);
     }
 
+    @VisibleForTesting
+    void initPreference() {
+        mBatteryUsagePreference = findPreference(KEY_BATTERY_USAGE);
+        mBatteryUsagePreference.setSummary(
+                mPowerFeatureProvider.isChartGraphEnabled(getContext()) ?
+                        getString(R.string.advanced_battery_preference_summary_with_hours) :
+                        getString(R.string.advanced_battery_preference_summary));
+
+        mHelpPreference = findPreference(KEY_BATTERY_ERROR);
+        mHelpPreference.setVisible(false);
+    }
+
     @VisibleForTesting
     void restartBatteryInfoLoader() {
         if (getContext() == null) {
diff --git a/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageSummaryTest.java b/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageSummaryTest.java
index 11b6ad27f94..843cc99143b 100644
--- a/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageSummaryTest.java
+++ b/tests/robotests/src/com/android/settings/fuelgauge/PowerUsageSummaryTest.java
@@ -16,6 +16,8 @@
 package com.android.settings.fuelgauge;
 
 import static com.android.settings.fuelgauge.PowerUsageSummary.BATTERY_INFO_LOADER;
+import static com.android.settings.fuelgauge.PowerUsageSummary.KEY_BATTERY_ERROR;
+import static com.android.settings.fuelgauge.PowerUsageSummary.KEY_BATTERY_USAGE;
 
 import static com.google.common.truth.Truth.assertThat;
 
@@ -37,6 +39,7 @@ import android.os.Bundle;
 import android.provider.Settings;
 
 import androidx.loader.app.LoaderManager;
+import androidx.preference.Preference;
 import androidx.preference.PreferenceScreen;
 
 import com.android.settings.R;
@@ -83,6 +86,10 @@ public class PowerUsageSummaryTest {
     private VisibilityLoggerMixin mVisibilityLoggerMixin;
     @Mock
     private PreferenceScreen mPreferenceScreen;
+    @Mock
+    private Preference mBatteryUsagePreference;
+    @Mock
+    private Preference mHelpPreference;
 
     private Context mRealContext;
     private TestFragment mFragment;
@@ -102,12 +109,16 @@ public class PowerUsageSummaryTest {
         when(mFragment.getActivity()).thenReturn(mSettingsActivity);
         when(mFeatureFactory.powerUsageFeatureProvider.getAdditionalBatteryInfoIntent())
                 .thenReturn(sAdditionalBatteryInfoIntent);
+        when(mFeatureFactory.powerUsageFeatureProvider.isChartGraphEnabled(mRealContext))
+                .thenReturn(true);
         mFragment.mBatteryUtils = spy(new BatteryUtils(mRealContext));
         ReflectionHelpers.setField(mFragment, "mVisibilityLoggerMixin", mVisibilityLoggerMixin);
         ReflectionHelpers.setField(mFragment, "mBatteryBroadcastReceiver",
                 mBatteryBroadcastReceiver);
         doReturn(mPreferenceScreen).when(mFragment).getPreferenceScreen();
         when(mFragment.getContentResolver()).thenReturn(mContentResolver);
+        when(mFragment.findPreference(KEY_BATTERY_USAGE)).thenReturn(mBatteryUsagePreference);
+        when(mFragment.findPreference(KEY_BATTERY_ERROR)).thenReturn(mHelpPreference);
     }
 
     @Test
@@ -123,6 +134,30 @@ public class PowerUsageSummaryTest {
         assertThat(keys).containsAtLeastElementsIn(niks);
     }
 
+    @Test
+    public void initPreference_chartGraphEnabled_hasCorrectSummary() {
+        mFragment.initPreference();
+
+        verify(mBatteryUsagePreference).setSummary("View usage for past 24 hours");
+    }
+
+    @Test
+    public void initPreference_chartGraphDisabled_hasCorrectSummary() {
+        when(mFeatureFactory.powerUsageFeatureProvider.isChartGraphEnabled(mRealContext))
+                .thenReturn(false);
+
+        mFragment.initPreference();
+
+        verify(mBatteryUsagePreference).setSummary("View usage from last full charge");
+    }
+
+    @Test
+    public void initPreference_helpPreferenceInvisible() {
+        mFragment.initPreference();
+
+        verify(mHelpPreference).setVisible(false);
+    }
+
     @Test
     public void restartBatteryTipLoader() {
         //TODO: add policy logic here when BatteryTipPolicy is implemented