diff --git a/apps/gui/usb_screen.c b/apps/gui/usb_screen.c
index f74747fd5c..527ae9fd15 100644
--- a/apps/gui/usb_screen.c
+++ b/apps/gui/usb_screen.c
@@ -91,6 +91,10 @@ static int handle_usb_events(void)
             case SYS_USB_DISCONNECTED:
                 usb_acknowledge(SYS_USB_DISCONNECTED_ACK);
                 return 1;
+            case SYS_CHARGER_DISCONNECTED:
+                /*reset rockbox battery runtime*/
+                global_status.runtime = 0;
+                break;
             case SYS_TIMEOUT:
                 break;
         }
diff --git a/apps/misc.c b/apps/misc.c
index 8c60e32559..554d29e630 100644
--- a/apps/misc.c
+++ b/apps/misc.c
@@ -590,6 +590,7 @@ long default_event_handler_ex(long event, void (*callback)(void *), void *parame
                 system_restore();
             }
             return SYS_USB_CONNECTED;
+
         case SYS_POWEROFF:
             if (!clean_shutdown(callback, parameter))
                 return SYS_POWEROFF;
@@ -601,6 +602,8 @@ long default_event_handler_ex(long event, void (*callback)(void *), void *parame
 
         case SYS_CHARGER_DISCONNECTED:
             car_adapter_mode_processing(false);
+            /*reset rockbox battery runtime*/
+            global_status.runtime = 0;
             return SYS_CHARGER_DISCONNECTED;
 
         case SYS_CAR_ADAPTER_RESUME:
diff --git a/apps/screens.c b/apps/screens.c
index 92b174b55c..65ab1094d3 100644
--- a/apps/screens.c
+++ b/apps/screens.c
@@ -825,16 +825,8 @@ bool view_runtime(void)
     gui_synclist_speak_item(&lists);
     while(1)
     {
-#if CONFIG_CHARGING
-        if (charger_inserted())
-        {
-            global_status.runtime = 0;
-        }
-        else
-#endif
-        {
-            global_status.runtime += ((current_tick - lasttime) / HZ);
-        }
+        global_status.runtime += ((current_tick - lasttime) / HZ);
+        
         lasttime = current_tick;
         gui_synclist_draw(&lists);
         list_do_action(CONTEXT_STD, HZ,