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);