diff --git a/health/aidl/default/Health.cpp b/health/aidl/default/Health.cpp
index 1d8cc13..8b512c4 100644
--- a/health/aidl/default/Health.cpp
+++ b/health/aidl/default/Health.cpp
@@ -153,6 +153,8 @@
         !res.isOk()) {
         LOG(WARNING) << "Cannot get Battery_state_of_health: " << res.getDescription();
     }
+    out->batterySerialNumber = std::nullopt;
+    out->batteryPartStatus = BatteryPartStatus::UNSUPPORTED;
     return ndk::ScopedAStatus::ok();
 }