1.9.0-BatteryManager电池充电状态信息引入完成

lib/utils/charge_utils.dart

@@ -70,8 +70,11 @@ class ChargeUtils {
     if (power == 0) return "读取中...";
 
     if (wiredLevel != null && ChargeMaps.wiredPower.containsKey(wiredLevel)) {
-      final requested = ChargeMaps.wiredPower[wiredLevel]!.round();
-      return "≈${requested}w/L-$wiredLevel";
+      final requested = ChargeMaps.wiredPower[wiredLevel]!;
+      final str = requested == requested.roundToDouble()
+          ? requested.toInt().toString()
+          : requested.toStringAsFixed(1);
+      return "≈${str}w/L-$wiredLevel";
     }
 
     return "≈${power.round()}w";
@@ -96,4 +99,31 @@ class ChargeUtils {
     if (chargeType == 'SDP') return 'USB';
     return chargeType;
   }
+
+  /// 主界面：BM 电池端功率 + 档位
+  /// 示例：5.98w / L-7、12.3w、读取中...
+  static String getMainDisplayPowerBm(
+    double bmPower,
+    int? wiredLevel,
+    String chargeType,
+    bool isWireless,
+  ) {
+    if (bmPower <= 0 || bmPower > 100) return '读取中...';
+
+    final powerStr = '${bmPower.toStringAsFixed(1)}w';
+
+    if (isWireless || chargeType == 'SDP') return powerStr;
+
+    // 有线：拼接标定瓦数
+    if (wiredLevel != null && ChargeMaps.wiredPower.containsKey(wiredLevel)) {
+      final requested = ChargeMaps.wiredPower[wiredLevel]!;
+      // 7.5 → "7.5"，27 → "27"
+      final requestedStr = requested == requested.roundToDouble()
+          ? requested.toInt().toString()
+          : requested.toStringAsFixed(1);
+      return '$powerStr / ${requestedStr}w';
+    }
+
+    return powerStr;
+  }
 }