diff --git a/src/main/java/com/ruoyi/device/domain/model/thingsboard/constants/DeviceTelemetry.java b/src/main/java/com/ruoyi/device/domain/model/thingsboard/constants/DeviceTelemetry.java
index 12fb5e4..86bedd4 100644
--- a/src/main/java/com/ruoyi/device/domain/model/thingsboard/constants/DeviceTelemetry.java
+++ b/src/main/java/com/ruoyi/device/domain/model/thingsboard/constants/DeviceTelemetry.java
@@ -4,6 +4,7 @@ import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.ruoyi.device.domain.model.thingsboard.AttributeKey;
 import com.ruoyi.device.domain.model.thingsboard.TelemetryKey;
+import com.ruoyi.device.domain.model.thingsboard.attributes.battery.BatteryInfo;
 import com.ruoyi.device.domain.model.thingsboard.attributes.psdk.PsdkDevice;
 import com.ruoyi.device.domain.model.thingsboard.attributes.battery.BatteryData;
 
@@ -305,9 +306,7 @@ public class DeviceTelemetry {
     );
 
 
-    /**
-     * 无人机特有
-     */
+
 
     /**
      * 无人机挂载信息
diff --git a/src/main/java/com/ruoyi/device/service/impl/BufferDeviceImpl.java b/src/main/java/com/ruoyi/device/service/impl/BufferDeviceImpl.java
index 1d67add..b0c3138 100644
--- a/src/main/java/com/ruoyi/device/service/impl/BufferDeviceImpl.java
+++ b/src/main/java/com/ruoyi/device/service/impl/BufferDeviceImpl.java
@@ -173,6 +173,16 @@ public class BufferDeviceImpl implements IBufferDeviceService
             dto.setPayloadList(payloads);
         }
 
+        // 获取电池SN号 - 从 batteries 数组里面的第一个的 SN号
+        TelemetryMap telemetryMap = thingsBoardDomain.getPredefinedDeviceTelemetry(device.getIotDeviceId());
+        telemetryMap.get(DeviceTelemetry.BATTERY)
+                .ifPresent(telemetryValue -> {
+                    var batteryData = telemetryValue.getValue();
+                    if (batteryData != null && !CollectionUtils.isEmpty(batteryData.getBatteries())) {
+                        String batterySn = batteryData.getBatteries().get(0).getSn();
+                        dto.setBatterySn(batterySn);
+                    }
+                });
 
         return dto;
     }