diff --git a/app/Peripherals/PeripheralsProvider.cs b/app/Peripherals/PeripheralsProvider.cs
index 86300411..618bd1c8 100644
--- a/app/Peripherals/PeripheralsProvider.cs
+++ b/app/Peripherals/PeripheralsProvider.cs
@@ -33,6 +33,8 @@ namespace GHelper.Peripherals
 
         public static void RefreshBatteryForAllDevices()
         {
+            if (!IsAnyPeripheralConnect()) return;
+
             lock (_LOCK)
             {
                 foreach (IPeripheral m in AllPeripherals())