diff --git a/Service/Car/Msg/Car/Req/HeartBeatMsg.cs b/Service/Car/Msg/Car/Req/HeartBeatMsg.cs
index c2acb63..010ebf7 100644
--- a/Service/Car/Msg/Car/Req/HeartBeatMsg.cs
+++ b/Service/Car/Msg/Car/Req/HeartBeatMsg.cs
@@ -59,10 +59,13 @@ public class HeartBeatMsg: BaseMsg
     [Property(320, 8,scale:0.1)]
     public ushort Soc { get; set; }
     /// <summary>
-    /// 电池编码
+    /// 电池编码    ASCII
+    /// 全0xFF：无效；
+    /// 宁德电池数据长度为12，多余的位置置0x00
     /// </summary>
-    [Property(328, 224)]
+    [Property(328, 96)]
     public string BatteryNo { get; set; }
+    //public string BatteryNo { get; set; }
     /// <summary>
     /// 车辆总行驶里程 单位 0.1km
     /// </summary>