diff --git a/src/com/android/settings/fuelgauge/BatteryInfo.java b/src/com/android/settings/fuelgauge/BatteryInfo.java
index acd8144..c4c795b 100644
--- a/src/com/android/settings/fuelgauge/BatteryInfo.java
+++ b/src/com/android/settings/fuelgauge/BatteryInfo.java
@@ -272,7 +272,7 @@
         void onParsingDone();
     }
 
-    private static void parse(BatteryStats stats, BatteryDataParser... parsers) {
+    public static void parse(BatteryStats stats, BatteryDataParser... parsers) {
         long startWalltime = 0;
         long endWalltime = 0;
         long historyStart = 0;
diff --git a/src/com/android/settings/fuelgauge/batterytip/BatteryTipPolicy.java b/src/com/android/settings/fuelgauge/batterytip/BatteryTipPolicy.java
index 6af859b..a580db1 100644
--- a/src/com/android/settings/fuelgauge/batterytip/BatteryTipPolicy.java
+++ b/src/com/android/settings/fuelgauge/batterytip/BatteryTipPolicy.java
@@ -19,9 +19,12 @@
 import android.content.Context;
 import android.provider.Settings;
 import android.support.annotation.VisibleForTesting;
+import android.text.format.DateUtils;
 import android.util.KeyValueListParser;
 import android.util.Log;
 
+import java.time.Duration;
+
 /**
  * Class to store the policy for battery tips, which comes from
  * {@link Settings.Global}
@@ -34,6 +37,8 @@
     private static final String KEY_BATTERY_SAVER_TIP_ENABLED = "battery_saver_tip_enabled";
     private static final String KEY_HIGH_USAGE_ENABLED = "high_usage_enabled";
     private static final String KEY_HIGH_USAGE_APP_COUNT = "high_usage_app_count";
+    private static final String KEY_HIGH_USAGE_PERIOD_MS = "high_usage_period_ms";
+    private static final String KEY_HIGH_USAGE_BATTERY_DRAINING = "high_usage_battery_draining";
     private static final String KEY_APP_RESTRICTION_ENABLED = "app_restriction_enabled";
     private static final String KEY_REDUCED_BATTERY_ENABLED = "reduced_battery_enabled";
     private static final String KEY_REDUCED_BATTERY_PERCENT = "reduced_battery_percent";
@@ -81,6 +86,24 @@
     public final int highUsageAppCount;
 
     /**
+     * The size of the window(milliseconds) for checking if the device is being heavily used
+     *
+     * @see Settings.Global#BATTERY_TIP_CONSTANTS
+     * @see #KEY_HIGH_USAGE_PERIOD_MS
+     */
+    public final long highUsagePeriodMs;
+
+    /**
+     * The battery draining threshold to detect whether device is heavily used.
+     * If battery drains more than {@link #highUsageBatteryDraining} in last {@link
+     * #highUsagePeriodMs}, treat device as heavily used.
+     *
+     * @see Settings.Global#BATTERY_TIP_CONSTANTS
+     * @see #KEY_HIGH_USAGE_BATTERY_DRAINING
+     */
+    public final int highUsageBatteryDraining;
+
+    /**
      * {@code true} if app restriction tip is enabled
      *
      * @see Settings.Global#BATTERY_TIP_CONSTANTS
@@ -143,6 +166,9 @@
         batterySaverTipEnabled = mParser.getBoolean(KEY_BATTERY_SAVER_TIP_ENABLED, true);
         highUsageEnabled = mParser.getBoolean(KEY_HIGH_USAGE_ENABLED, true);
         highUsageAppCount = mParser.getInt(KEY_HIGH_USAGE_APP_COUNT, 3);
+        highUsagePeriodMs = mParser.getLong(KEY_HIGH_USAGE_PERIOD_MS,
+                Duration.ofHours(2).toMillis());
+        highUsageBatteryDraining = mParser.getInt(KEY_HIGH_USAGE_BATTERY_DRAINING, 25);
         appRestrictionEnabled = mParser.getBoolean(KEY_APP_RESTRICTION_ENABLED, true);
         reducedBatteryEnabled = mParser.getBoolean(KEY_REDUCED_BATTERY_ENABLED, false);
         reducedBatteryPercent = mParser.getInt(KEY_REDUCED_BATTERY_PERCENT, 50);
diff --git a/src/com/android/settings/fuelgauge/batterytip/HighUsageDataParser.java b/src/com/android/settings/fuelgauge/batterytip/HighUsageDataParser.java
new file mode 100644
index 0000000..cc5aed6
--- /dev/null
+++ b/src/com/android/settings/fuelgauge/batterytip/HighUsageDataParser.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.fuelgauge.batterytip;
+
+import android.os.BatteryStats;
+
+import com.android.settings.fuelgauge.BatteryInfo;
+
+/**
+ * DataParser used to go through battery data and detect whether battery is
+ * heavily used.
+ */
+public class HighUsageDataParser implements BatteryInfo.BatteryDataParser {
+    /**
+     * time period to check the battery usage
+     */
+    private final long mTimePeriodMs;
+    /**
+     * treat device as heavily used if battery usage is more than {@code threshold}. 1 means 1%
+     * battery usage.
+     */
+    private int mThreshold;
+    private long mEndTimeMs;
+    private byte mEndBatteryLevel;
+    private byte mLastPeriodBatteryLevel;
+    private int mBatteryDrain;
+
+    public HighUsageDataParser(long timePeriodMs, int threshold) {
+        mTimePeriodMs = timePeriodMs;
+        mThreshold = threshold;
+    }
+
+    @Override
+    public void onParsingStarted(long startTime, long endTime) {
+        mEndTimeMs = endTime;
+    }
+
+    @Override
+    public void onDataPoint(long time, BatteryStats.HistoryItem record) {
+        if (record.currentTime <= mEndTimeMs - mTimePeriodMs) {
+            // Since onDataPoint is invoked sorted by time, so we could use this way to get the
+            // closet battery level 'mTimePeriodMs' time ago.
+            mLastPeriodBatteryLevel = record.batteryLevel;
+        }
+        mEndBatteryLevel = record.batteryLevel;
+    }
+
+    @Override
+    public void onDataGap() {
+        // do nothing
+    }
+
+    @Override
+    public void onParsingDone() {
+        mBatteryDrain = mLastPeriodBatteryLevel - mEndBatteryLevel;
+    }
+
+    /**
+     * Return {@code true} if the battery drain in {@link #mTimePeriodMs} is too much
+     */
+    public boolean isDeviceHeavilyUsed() {
+        return mBatteryDrain > mThreshold;
+    }
+}
+
diff --git a/src/com/android/settings/fuelgauge/batterytip/detectors/HighUsageDetector.java b/src/com/android/settings/fuelgauge/batterytip/detectors/HighUsageDetector.java
index 3c69667..ed3fa04 100644
--- a/src/com/android/settings/fuelgauge/batterytip/detectors/HighUsageDetector.java
+++ b/src/com/android/settings/fuelgauge/batterytip/detectors/HighUsageDetector.java
@@ -19,13 +19,14 @@
 import android.content.Context;
 import android.os.BatteryStats;
 import android.support.annotation.VisibleForTesting;
-import android.text.format.DateUtils;
 
 import com.android.internal.os.BatterySipper;
 import com.android.internal.os.BatteryStatsHelper;
 import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settings.fuelgauge.batterytip.BatteryTipPolicy;
 import com.android.settings.fuelgauge.batterytip.AppInfo;
+import com.android.settings.fuelgauge.BatteryInfo;
+import com.android.settings.fuelgauge.batterytip.HighUsageDataParser;
 import com.android.settings.fuelgauge.batterytip.tips.BatteryTip;
 import com.android.settings.fuelgauge.batterytip.tips.HighUsageTip;
 
@@ -43,6 +44,8 @@
     private List<AppInfo> mHighUsageAppList;
     private Context mContext;
     @VisibleForTesting
+    HighUsageDataParser mDataParser;
+    @VisibleForTesting
     BatteryUtils mBatteryUtils;
 
     public HighUsageDetector(Context context, BatteryTipPolicy policy,
@@ -52,32 +55,42 @@
         mBatteryStatsHelper = batteryStatsHelper;
         mHighUsageAppList = new ArrayList<>();
         mBatteryUtils = BatteryUtils.getInstance(context);
+        mDataParser = new HighUsageDataParser(mPolicy.highUsagePeriodMs,
+                mPolicy.highUsageBatteryDraining);
     }
 
     @Override
     public BatteryTip detect() {
         final long screenUsageTimeMs = mBatteryUtils.calculateScreenUsageTime(mBatteryStatsHelper);
-        //TODO(b/70570352): Change it to detect whether battery drops 25% in last 2 hours
-        if (mPolicy.highUsageEnabled && screenUsageTimeMs > DateUtils.HOUR_IN_MILLIS) {
-            final List<BatterySipper> batterySippers = mBatteryStatsHelper.getUsageList();
-            for (int i = 0, size = batterySippers.size(); i < size; i++) {
-                final BatterySipper batterySipper = batterySippers.get(i);
-                if (!mBatteryUtils.shouldHideSipper(batterySipper)) {
-                    final long foregroundTimeMs = mBatteryUtils.getProcessTimeMs(
-                            BatteryUtils.StatusType.FOREGROUND, batterySipper.uidObj,
-                            BatteryStats.STATS_SINCE_CHARGED);
-                    mHighUsageAppList.add(new AppInfo.Builder()
-                            .setPackageName(mBatteryUtils.getPackageName(batterySipper.getUid()))
-                            .setScreenOnTimeMs(foregroundTimeMs)
-                            .build());
+        if (mPolicy.highUsageEnabled) {
+            parseBatteryData();
+            if (mDataParser.isDeviceHeavilyUsed()) {
+                final List<BatterySipper> batterySippers = mBatteryStatsHelper.getUsageList();
+                for (int i = 0, size = batterySippers.size(); i < size; i++) {
+                    final BatterySipper batterySipper = batterySippers.get(i);
+                    if (!mBatteryUtils.shouldHideSipper(batterySipper)) {
+                        final long foregroundTimeMs = mBatteryUtils.getProcessTimeMs(
+                                BatteryUtils.StatusType.FOREGROUND, batterySipper.uidObj,
+                                BatteryStats.STATS_SINCE_CHARGED);
+                        mHighUsageAppList.add(new AppInfo.Builder()
+                                .setPackageName(
+                                        mBatteryUtils.getPackageName(batterySipper.getUid()))
+                                .setScreenOnTimeMs(foregroundTimeMs)
+                                .build());
+                    }
                 }
-            }
 
-            mHighUsageAppList = mHighUsageAppList.subList(0,
-                    Math.min(mPolicy.highUsageAppCount, mHighUsageAppList.size()));
-            Collections.sort(mHighUsageAppList, Collections.reverseOrder());
+                mHighUsageAppList = mHighUsageAppList.subList(0,
+                        Math.min(mPolicy.highUsageAppCount, mHighUsageAppList.size()));
+                Collections.sort(mHighUsageAppList, Collections.reverseOrder());
+            }
         }
 
         return new HighUsageTip(screenUsageTimeMs, mHighUsageAppList);
     }
+
+    @VisibleForTesting
+    void parseBatteryData() {
+        BatteryInfo.parse(mBatteryStatsHelper.getStats(), mDataParser);
+    }
 }
diff --git a/tests/robotests/src/com/android/settings/fuelgauge/batterytip/BatteryTipLoaderTest.java b/tests/robotests/src/com/android/settings/fuelgauge/batterytip/BatteryTipLoaderTest.java
index 53c9766..83b3225 100644
--- a/tests/robotests/src/com/android/settings/fuelgauge/batterytip/BatteryTipLoaderTest.java
+++ b/tests/robotests/src/com/android/settings/fuelgauge/batterytip/BatteryTipLoaderTest.java
@@ -37,6 +37,7 @@
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.mockito.Answers;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
 import org.robolectric.RuntimeEnvironment;
@@ -54,7 +55,7 @@
             BatteryTip.TipType.BATTERY_SAVER,
             BatteryTip.TipType.LOW_BATTERY,
             BatteryTip.TipType.SUMMARY};
-    @Mock
+    @Mock(answer = Answers.RETURNS_DEEP_STUBS)
     private BatteryStatsHelper mBatteryStatsHelper;
     @Mock
     private PowerManager mPowerManager;
diff --git a/tests/robotests/src/com/android/settings/fuelgauge/batterytip/BatteryTipPolicyTest.java b/tests/robotests/src/com/android/settings/fuelgauge/batterytip/BatteryTipPolicyTest.java
index bb9a37b..78c86f8 100644
--- a/tests/robotests/src/com/android/settings/fuelgauge/batterytip/BatteryTipPolicyTest.java
+++ b/tests/robotests/src/com/android/settings/fuelgauge/batterytip/BatteryTipPolicyTest.java
@@ -24,6 +24,7 @@
 
 import android.content.Context;
 import android.provider.Settings;
+import android.text.format.DateUtils;
 
 import com.android.settings.TestConfig;
 import com.android.settings.testutils.SettingsRobolectricTestRunner;
@@ -42,6 +43,8 @@
             + ",battery_saver_tip_enabled=false"
             + ",high_usage_enabled=true"
             + ",high_usage_app_count=5"
+            + ",high_usage_period_ms=2000"
+            + ",high_usage_battery_draining=30"
             + ",app_restriction_enabled=true"
             + ",reduced_battery_enabled=true"
             + ",reduced_battery_percent=30"
@@ -66,6 +69,8 @@
         assertThat(batteryTipPolicy.batterySaverTipEnabled).isFalse();
         assertThat(batteryTipPolicy.highUsageEnabled).isTrue();
         assertThat(batteryTipPolicy.highUsageAppCount).isEqualTo(5);
+        assertThat(batteryTipPolicy.highUsagePeriodMs).isEqualTo(2000);
+        assertThat(batteryTipPolicy.highUsageBatteryDraining).isEqualTo(30);
         assertThat(batteryTipPolicy.appRestrictionEnabled).isTrue();
         assertThat(batteryTipPolicy.reducedBatteryEnabled).isTrue();
         assertThat(batteryTipPolicy.reducedBatteryPercent).isEqualTo(30);
@@ -85,6 +90,8 @@
         assertThat(batteryTipPolicy.batterySaverTipEnabled).isTrue();
         assertThat(batteryTipPolicy.highUsageEnabled).isTrue();
         assertThat(batteryTipPolicy.highUsageAppCount).isEqualTo(3);
+        assertThat(batteryTipPolicy.highUsagePeriodMs).isEqualTo(2 * DateUtils.HOUR_IN_MILLIS);
+        assertThat(batteryTipPolicy.highUsageBatteryDraining).isEqualTo(25);
         assertThat(batteryTipPolicy.appRestrictionEnabled).isTrue();
         assertThat(batteryTipPolicy.reducedBatteryEnabled).isFalse();
         assertThat(batteryTipPolicy.reducedBatteryPercent).isEqualTo(50);
diff --git a/tests/robotests/src/com/android/settings/fuelgauge/batterytip/HighUsageDataParserTest.java b/tests/robotests/src/com/android/settings/fuelgauge/batterytip/HighUsageDataParserTest.java
new file mode 100644
index 0000000..5bdae0c
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/fuelgauge/batterytip/HighUsageDataParserTest.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settings.fuelgauge.batterytip;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import android.os.BatteryStats;
+import android.text.format.DateUtils;
+
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.annotation.Config;
+
+import java.time.Duration;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class HighUsageDataParserTest {
+    private static final long PERIOD_ONE_MINUTE_MS = Duration.ofMinutes(1).toMillis();
+    private static final long END_TIME_MS = 2 * PERIOD_ONE_MINUTE_MS;
+    private static final int THRESHOLD_LOW = 10;
+    private static final int THRESHOLD_HIGH = 20;
+    private HighUsageDataParser mDataParser;
+    private BatteryStats.HistoryItem mFirstItem;
+    private BatteryStats.HistoryItem mSecondItem;
+    private BatteryStats.HistoryItem mThirdItem;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mFirstItem = new BatteryStats.HistoryItem();
+        mFirstItem.batteryLevel = 100;
+        mFirstItem.currentTime = 0;
+        mSecondItem = new BatteryStats.HistoryItem();
+        mSecondItem.batteryLevel = 95;
+        mSecondItem.currentTime = PERIOD_ONE_MINUTE_MS;
+        mThirdItem = new BatteryStats.HistoryItem();
+        mThirdItem.batteryLevel = 80;
+        mThirdItem.currentTime = END_TIME_MS;
+    }
+
+    @Test
+    public void testDataParser_thresholdLow_isHeavilyUsed() {
+        mDataParser = new HighUsageDataParser(PERIOD_ONE_MINUTE_MS, THRESHOLD_LOW);
+        parseData();
+
+        assertThat(mDataParser.isDeviceHeavilyUsed()).isTrue();
+    }
+
+    @Test
+    public void testDataParser_thresholdHigh_notHeavilyUsed() {
+        mDataParser = new HighUsageDataParser(PERIOD_ONE_MINUTE_MS, THRESHOLD_HIGH);
+        parseData();
+
+        assertThat(mDataParser.isDeviceHeavilyUsed()).isFalse();
+    }
+
+    private void parseData() {
+        mDataParser.onParsingStarted(0, END_TIME_MS);
+        mDataParser.onDataPoint(0, mFirstItem);
+        mDataParser.onDataPoint(PERIOD_ONE_MINUTE_MS, mSecondItem);
+        mDataParser.onDataPoint(END_TIME_MS, mThirdItem);
+
+        mDataParser.onParsingDone();
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/fuelgauge/batterytip/detectors/HighUsageDetectorTest.java b/tests/robotests/src/com/android/settings/fuelgauge/batterytip/detectors/HighUsageDetectorTest.java
index 2a71991..8df7c56 100644
--- a/tests/robotests/src/com/android/settings/fuelgauge/batterytip/detectors/HighUsageDetectorTest.java
+++ b/tests/robotests/src/com/android/settings/fuelgauge/batterytip/detectors/HighUsageDetectorTest.java
@@ -18,6 +18,8 @@
 
 import static com.google.common.truth.Truth.assertThat;
 
+import static org.mockito.Matchers.anyInt;
+import static org.mockito.Mockito.doNothing;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.spy;
 
@@ -31,6 +33,7 @@
 import com.android.settings.fuelgauge.BatteryInfo;
 import com.android.settings.fuelgauge.BatteryUtils;
 import com.android.settings.fuelgauge.batterytip.BatteryTipPolicy;
+import com.android.settings.fuelgauge.batterytip.HighUsageDataParser;
 import com.android.settings.testutils.SettingsRobolectricTestRunner;
 
 import org.junit.Before;
@@ -55,6 +58,8 @@
     private BatteryUtils mBatteryUtils;
     @Mock
     private BatterySipper mBatterySipper;
+    @Mock
+    private HighUsageDataParser mDataParser;
 
     private BatteryTipPolicy mPolicy;
     private HighUsageDetector mHighUsageDetector;
@@ -66,8 +71,10 @@
 
         mContext = RuntimeEnvironment.application;
         mPolicy = spy(new BatteryTipPolicy(mContext));
-        mHighUsageDetector = new HighUsageDetector(mContext, mPolicy, mBatteryStatsHelper);
+        mHighUsageDetector = spy(new HighUsageDetector(mContext, mPolicy, mBatteryStatsHelper));
         mHighUsageDetector.mBatteryUtils = mBatteryUtils;
+        mHighUsageDetector.mDataParser = mDataParser;
+        doNothing().when(mHighUsageDetector).parseBatteryData();
 
         mUsageList = new ArrayList<>();
         mUsageList.add(mBatterySipper);
@@ -82,8 +89,7 @@
 
     @Test
     public void testDetect_containsHighUsageApp_tipVisible() {
-        doReturn(2 * DateUtils.HOUR_IN_MILLIS).when(mBatteryUtils).calculateScreenUsageTime(
-                mBatteryStatsHelper);
+        doReturn(true).when(mDataParser).isDeviceHeavilyUsed();
         doReturn(mUsageList).when(mBatteryStatsHelper).getUsageList();
         doReturn(DateUtils.HOUR_IN_MILLIS).when(mBatteryUtils).getProcessTimeMs(
                 BatteryUtils.StatusType.FOREGROUND, mBatterySipper.uidObj,