diff --git a/packages/SettingsLib/UsageProgressBarPreference/res/layout/preference_usage_progress_bar.xml b/packages/SettingsLib/UsageProgressBarPreference/res/layout/preference_usage_progress_bar.xml
index f45105dc3311b..31b3fe56b76a2 100644
--- a/packages/SettingsLib/UsageProgressBarPreference/res/layout/preference_usage_progress_bar.xml
+++ b/packages/SettingsLib/UsageProgressBarPreference/res/layout/preference_usage_progress_bar.xml
@@ -70,4 +70,13 @@
         android:scaleY="2"
         android:layout_marginTop="4dp"
         android:max="100"/>
+
+    <TextView
+        android:id="@+id/bottom_summary"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:visibility="gone"
+        android:ellipsize="marquee"
+        android:textAppearance="@*android:style/TextAppearance.DeviceDefault.Body1"
+        android:textSize="14sp"/>
 </LinearLayout>
diff --git a/packages/SettingsLib/UsageProgressBarPreference/src/com/android/settingslib/widget/UsageProgressBarPreference.java b/packages/SettingsLib/UsageProgressBarPreference/src/com/android/settingslib/widget/UsageProgressBarPreference.java
index 21859501c0578..a2b1de25bd211 100644
--- a/packages/SettingsLib/UsageProgressBarPreference/src/com/android/settingslib/widget/UsageProgressBarPreference.java
+++ b/packages/SettingsLib/UsageProgressBarPreference/src/com/android/settingslib/widget/UsageProgressBarPreference.java
@@ -44,6 +44,7 @@ public class UsageProgressBarPreference extends Preference {
 
     private CharSequence mUsageSummary;
     private CharSequence mTotalSummary;
+    private CharSequence mBottomSummary;
     private ImageView mCustomImageView;
     private int mPercent = -1;
 
@@ -101,6 +102,15 @@ public class UsageProgressBarPreference extends Preference {
         notifyChanged();
     }
 
+    /** Set bottom summary. */
+    public void setBottomSummary(CharSequence bottomSummary) {
+        if (TextUtils.equals(mBottomSummary, bottomSummary)) {
+            return;
+        }
+        mBottomSummary = bottomSummary;
+        notifyChanged();
+    }
+
     /** Set percentage of the progress bar. */
     public void setPercent(long usage, long total) {
         if (total == 0L || usage >  total) {
@@ -147,6 +157,14 @@ public class UsageProgressBarPreference extends Preference {
             totalSummary.setText(mTotalSummary);
         }
 
+        final TextView bottomSummary = (TextView) holder.findViewById(R.id.bottom_summary);
+        if (TextUtils.isEmpty(mBottomSummary)) {
+            bottomSummary.setVisibility(View.GONE);
+        } else {
+            bottomSummary.setVisibility(View.VISIBLE);
+            bottomSummary.setText(mBottomSummary);
+        }
+
         final ProgressBar progressBar = (ProgressBar) holder.findViewById(android.R.id.progress);
         if (mPercent < 0) {
             progressBar.setIndeterminate(true);
diff --git a/packages/SettingsLib/tests/integ/src/com/android/settingslib/widget/UsageProgressBarPreferenceTest.java b/packages/SettingsLib/tests/integ/src/com/android/settingslib/widget/UsageProgressBarPreferenceTest.java
index fe76b06a9b617..cd78addf254fb 100644
--- a/packages/SettingsLib/tests/integ/src/com/android/settingslib/widget/UsageProgressBarPreferenceTest.java
+++ b/packages/SettingsLib/tests/integ/src/com/android/settingslib/widget/UsageProgressBarPreferenceTest.java
@@ -91,6 +91,28 @@ public class UsageProgressBarPreferenceTest {
                 .isEqualTo(1);
     }
 
+    @Test
+    public void setBottomSummary_getCorrectSummary() {
+        final String expectedText = "Should last until about 7:45 PM";
+        mUsageProgressBarPreference.setBottomSummary(expectedText);
+
+        mUsageProgressBarPreference.onBindViewHolder(mViewHolder);
+
+        final TextView bottomSummary = (TextView) mViewHolder.findViewById(R.id.bottom_summary);
+        assertThat(bottomSummary.getText()).isEqualTo(expectedText);
+        assertThat(bottomSummary.getVisibility()).isEqualTo(View.VISIBLE);
+    }
+
+    @Test
+    public void setBottomSummary_emptyText_isGone() {
+        mUsageProgressBarPreference.setBottomSummary(null);
+
+        mUsageProgressBarPreference.onBindViewHolder(mViewHolder);
+
+        final TextView bottomSummary = (TextView) mViewHolder.findViewById(R.id.bottom_summary);
+        assertThat(bottomSummary.getVisibility()).isEqualTo(View.GONE);
+    }
+
     @Test
     public void setPercent_getCorrectProgress() {
         mUsageProgressBarPreference.setPercent(31, 80);