diff --git a/packages/SystemUI/src/com/android/systemui/stylus/StylusManager.kt b/packages/SystemUI/src/com/android/systemui/stylus/StylusManager.kt
index 9952cfd4e85bb..3805019d597ff 100644
--- a/packages/SystemUI/src/com/android/systemui/stylus/StylusManager.kt
+++ b/packages/SystemUI/src/com/android/systemui/stylus/StylusManager.kt
@@ -261,22 +261,26 @@ constructor(
     private fun trackAndLogUsiSession(deviceId: Int, batteryStateValid: Boolean) {
         // TODO(b/268618918) handle cases where an invalid battery callback from a previous stylus
         //  is sent after the actual valid callback
+        val hasBtConnection = if (inputDeviceBtSessionIdMap.isEmpty()) 0 else 1
+
         if (batteryStateValid && usiSessionId == null) {
             logDebug { "USI battery newly present, entering new USI session: $deviceId" }
             usiSessionId = instanceIdSequence.newInstanceId()
-            uiEventLogger.logWithInstanceId(
+            uiEventLogger.logWithInstanceIdAndPosition(
                 StylusUiEvent.USI_STYLUS_BATTERY_PRESENCE_FIRST_DETECTED,
                 0,
                 null,
-                usiSessionId
+                usiSessionId,
+                hasBtConnection,
             )
         } else if (!batteryStateValid && usiSessionId != null) {
             logDebug { "USI battery newly absent, exiting USI session: $deviceId" }
-            uiEventLogger.logWithInstanceId(
+            uiEventLogger.logWithInstanceIdAndPosition(
                 StylusUiEvent.USI_STYLUS_BATTERY_PRESENCE_REMOVED,
                 0,
                 null,
-                usiSessionId
+                usiSessionId,
+                hasBtConnection,
             )
             usiSessionId = null
         }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/stylus/StylusManagerTest.kt b/packages/SystemUI/tests/src/com/android/systemui/stylus/StylusManagerTest.kt
index 4525ad27b7492..17f8ec2136a42 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/stylus/StylusManagerTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/stylus/StylusManagerTest.kt
@@ -507,11 +507,29 @@ class StylusManagerTest : SysuiTestCase() {
         stylusManager.onBatteryStateChanged(STYLUS_DEVICE_ID, 1, batteryState)
 
         verify(uiEventLogger, times(1))
-            .logWithInstanceId(
+            .logWithInstanceIdAndPosition(
                 StylusUiEvent.USI_STYLUS_BATTERY_PRESENCE_FIRST_DETECTED,
                 0,
                 null,
-                InstanceId.fakeInstanceId(instanceIdSequenceFake.lastInstanceId)
+                InstanceId.fakeInstanceId(instanceIdSequenceFake.lastInstanceId),
+                0,
+            )
+    }
+
+    @Test
+    fun onBatteryStateChanged_batteryPresent_btStylusPresent_logsSessionStart() {
+        whenever(batteryState.isPresent).thenReturn(true)
+        stylusManager.onInputDeviceAdded(BT_STYLUS_DEVICE_ID)
+
+        stylusManager.onBatteryStateChanged(STYLUS_DEVICE_ID, 1, batteryState)
+
+        verify(uiEventLogger, times(1))
+            .logWithInstanceIdAndPosition(
+                StylusUiEvent.USI_STYLUS_BATTERY_PRESENCE_FIRST_DETECTED,
+                0,
+                null,
+                InstanceId.fakeInstanceId(instanceIdSequenceFake.lastInstanceId),
+                1,
             )
     }
 
@@ -545,19 +563,21 @@ class StylusManagerTest : SysuiTestCase() {
         stylusManager.onBatteryStateChanged(STYLUS_DEVICE_ID, 1, batteryState)
 
         verify(uiEventLogger, times(1))
-            .logWithInstanceId(
+            .logWithInstanceIdAndPosition(
                 StylusUiEvent.USI_STYLUS_BATTERY_PRESENCE_FIRST_DETECTED,
                 0,
                 null,
-                instanceId
+                instanceId,
+                0
             )
 
         verify(uiEventLogger, times(1))
-            .logWithInstanceId(
+            .logWithInstanceIdAndPosition(
                 StylusUiEvent.USI_STYLUS_BATTERY_PRESENCE_REMOVED,
                 0,
                 null,
-                instanceId
+                instanceId,
+                0
             )
     }