diff --git a/include/binder/IBatteryStats.h b/include/binder/IBatteryStats.h
new file mode 100644
index 0000000..f4a8aa3
--- /dev/null
+++ b/include/binder/IBatteryStats.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2013 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.
+ */
+
+#ifndef ANDROID_IBATTERYSTATS_H
+#define ANDROID_IBATTERYSTATS_H
+
+#include <binder/IInterface.h>
+
+namespace android {
+
+// ----------------------------------------------------------------------
+
+class IBatteryStats : public IInterface
+{
+public:
+    DECLARE_META_INTERFACE(BatteryStats);
+
+    virtual void noteStartSensor(int uid, int sensor) = 0;
+    virtual void noteStopSensor(int uid, int sensor) = 0;
+
+    enum {
+        NOTE_START_SENSOR_TRANSACTION = IBinder::FIRST_CALL_TRANSACTION,
+        NOTE_STOP_SENSOR_TRANSACTION,
+    };
+};
+
+// ----------------------------------------------------------------------
+
+class BnBatteryStats : public BnInterface<IBatteryStats>
+{
+public:
+    virtual status_t    onTransact( uint32_t code,
+                                    const Parcel& data,
+                                    Parcel* reply,
+                                    uint32_t flags = 0);
+};
+
+// ----------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_IBATTERYSTATS_H
diff --git a/libs/binder/Android.mk b/libs/binder/Android.mk
index f3f8daf..c8147ed 100644
--- a/libs/binder/Android.mk
+++ b/libs/binder/Android.mk
@@ -21,6 +21,7 @@
     Debug.cpp \
     IAppOpsCallback.cpp \
     IAppOpsService.cpp \
+    IBatteryStats.cpp \
     IInterface.cpp \
     IMemory.cpp \
     IPCThreadState.cpp \
diff --git a/libs/binder/IBatteryStats.cpp b/libs/binder/IBatteryStats.cpp
new file mode 100644
index 0000000..6469b08
--- /dev/null
+++ b/libs/binder/IBatteryStats.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2013 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.
+ */
+
+#include <binder/IBatteryStats.h>
+
+#include <utils/Debug.h>
+#include <utils/Log.h>
+#include <binder/Parcel.h>
+#include <utils/String8.h>
+
+#include <private/binder/Static.h>
+
+namespace android {
+
+// ----------------------------------------------------------------------
+
+class BpBatteryStats : public BpInterface<IBatteryStats>
+{
+public:
+    BpBatteryStats(const sp<IBinder>& impl)
+        : BpInterface<IBatteryStats>(impl)
+    {
+    }
+
+    virtual void noteStartSensor(int uid, int sensor) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IBatteryStats::getInterfaceDescriptor());
+        data.writeInt32(uid);
+        data.writeInt32(sensor);
+        remote()->transact(NOTE_START_SENSOR_TRANSACTION, data, &reply);
+    }
+
+    virtual void noteStopSensor(int uid, int sensor) {
+        Parcel data, reply;
+        data.writeInterfaceToken(IBatteryStats::getInterfaceDescriptor());
+        data.writeInt32(uid);
+        data.writeInt32(sensor);
+        remote()->transact(NOTE_STOP_SENSOR_TRANSACTION, data, &reply);
+    }
+};
+
+IMPLEMENT_META_INTERFACE(BatteryStats, "com.android.internal.app.IBatteryStats");
+
+// ----------------------------------------------------------------------
+
+status_t BnBatteryStats::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch(code) {
+        case NOTE_START_SENSOR_TRANSACTION: {
+            CHECK_INTERFACE(IBatteryStats, data, reply);
+            int uid = data.readInt32();
+            int sensor = data.readInt32();
+            noteStartSensor(uid, sensor);
+            reply->writeNoException();
+            return NO_ERROR;
+        } break;
+        case NOTE_STOP_SENSOR_TRANSACTION: {
+            CHECK_INTERFACE(IBatteryStats, data, reply);
+            int uid = data.readInt32();
+            int sensor = data.readInt32();
+            noteStopSensor(uid, sensor);
+            reply->writeNoException();
+            return NO_ERROR;
+        } break;
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+}; // namespace android
diff --git a/services/sensorservice/BatteryService.cpp b/services/sensorservice/BatteryService.cpp
index 38dc749..cb962a6 100644
--- a/services/sensorservice/BatteryService.cpp
+++ b/services/sensorservice/BatteryService.cpp
@@ -34,32 +34,10 @@
     const sp<IServiceManager> sm(defaultServiceManager());
     if (sm != NULL) {
         const String16 name("batterystats");
-        mBatteryStatService = sm->getService(name);
+        mBatteryStatService = interface_cast<IBatteryStats>(sm->getService(name));
     }
 }
 
-status_t BatteryService::noteStartSensor(int uid, int handle) {
-    Parcel data, reply;
-    data.writeInterfaceToken(DESCRIPTOR);
-    data.writeInt32(uid);
-    data.writeInt32(handle);
-    status_t err = mBatteryStatService->transact(
-            TRANSACTION_noteStartSensor, data, &reply, 0);
-    err = reply.readExceptionCode();
-    return err;
-}
-
-status_t BatteryService::noteStopSensor(int uid, int handle) {
-    Parcel data, reply;
-    data.writeInterfaceToken(DESCRIPTOR);
-    data.writeInt32(uid);
-    data.writeInt32(handle);
-    status_t err = mBatteryStatService->transact(
-            TRANSACTION_noteStopSensor, data, &reply, 0);
-    err = reply.readExceptionCode();
-    return err;
-}
-
 bool BatteryService::addSensor(uid_t uid, int handle) {
     Mutex::Autolock _l(mActivationsLock);
     Info key(uid, handle);
@@ -86,7 +64,7 @@
     if (mBatteryStatService != 0) {
         if (addSensor(uid, handle)) {
             int64_t identity = IPCThreadState::self()->clearCallingIdentity();
-            noteStartSensor(uid, handle);
+            mBatteryStatService->noteStartSensor(uid, handle);
             IPCThreadState::self()->restoreCallingIdentity(identity);
         }
     }
@@ -95,7 +73,7 @@
     if (mBatteryStatService != 0) {
         if (removeSensor(uid, handle)) {
             int64_t identity = IPCThreadState::self()->clearCallingIdentity();
-            noteStopSensor(uid, handle);
+            mBatteryStatService->noteStopSensor(uid, handle);
             IPCThreadState::self()->restoreCallingIdentity(identity);
         }
     }
@@ -108,7 +86,7 @@
         for (ssize_t i=0 ; i<mActivations.size() ; i++) {
             const Info& info(mActivations[i]);
             if (info.uid == uid) {
-                noteStopSensor(info.uid, info.handle);
+                mBatteryStatService->noteStopSensor(info.uid, info.handle);
                 mActivations.removeAt(i);
                 i--;
             }
@@ -117,8 +95,6 @@
     }
 }
 
-const String16 BatteryService::DESCRIPTOR("com.android.internal.app.IBatteryStats");
-
 ANDROID_SINGLETON_STATIC_INSTANCE(BatteryService)
 
 // ---------------------------------------------------------------------------
diff --git a/services/sensorservice/BatteryService.h b/services/sensorservice/BatteryService.h
index 86cc884..08ba857 100644
--- a/services/sensorservice/BatteryService.h
+++ b/services/sensorservice/BatteryService.h
@@ -17,22 +17,18 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <binder/IBatteryStats.h>
 #include <utils/Singleton.h>
 
 namespace android {
 // ---------------------------------------------------------------------------
 
 class BatteryService : public Singleton<BatteryService> {
-    static const int TRANSACTION_noteStartSensor = IBinder::FIRST_CALL_TRANSACTION + 3;
-    static const int TRANSACTION_noteStopSensor = IBinder::FIRST_CALL_TRANSACTION + 4;
-    static const String16 DESCRIPTOR;
 
     friend class Singleton<BatteryService>;
-    sp<IBinder> mBatteryStatService;
+    sp<IBatteryStats> mBatteryStatService;
 
     BatteryService();
-    status_t noteStartSensor(int uid, int handle);
-    status_t noteStopSensor(int uid, int handle);
 
     void enableSensorImpl(uid_t uid, int handle);
     void disableSensorImpl(uid_t uid, int handle);