2 files changed, 3 insertions, 2 deletions

diff --git a/firmware/powermgmt.c b/firmware/powermgmt.c
index 59d1a2fe7b..e640fdde06 100644
--- a/firmware/powermgmt.c
+++ b/firmware/powermgmt.c
@@ -368,14 +368,14 @@ static void power_thread(void)
         if (charge_state == 1)
             powermgmt_est_runningtime_min = (100 - battery_level()) * battery_capacity / 100 * 60 / CURRENT_CHARGING;
         else {
-            current = CURRENT_NORMAL;
+            current = usb_inserted() ? CURRENT_USB : CURRENT_NORMAL;
             if ((backlight_get_timeout() == 1) || (charger_inserted() && backlight_get_on_when_charging()))
                                                        /* LED always on or LED on when charger connected */
                 current += CURRENT_BACKLIGHT;
             powermgmt_est_runningtime_min = battery_level() * battery_capacity / 100 * 60 / current;
         }
 #else
-        current = CURRENT_NORMAL;
+        current = usb_inserted() ? CURRENT_USB : CURRENT_NORMAL;
         if (backlight_get_timeout() == 1) /* LED always on */
             current += CURRENT_BACKLIGHT;
         powermgmt_est_runningtime_min = battery_level() * battery_capacity / 100 * 60 / current;
diff --git a/firmware/powermgmt.h b/firmware/powermgmt.h
index b9686119c0..f4c772e221 100644
--- a/firmware/powermgmt.h
+++ b/firmware/powermgmt.h
@@ -66,6 +66,7 @@ extern int charge_state;         /* tells what the charger is doing (for info di
 #endif /* HAVE_CHARGE_CTRL */
 
 #define CURRENT_NORMAL    145    /* usual current in mA when using the AJB including some disk/backlight/... activity */
+#define CURRENT_USB       500    /* usual current in mA in USB mode */
 #define CURRENT_BACKLIGHT  30    /* additional current when backlight is always on */
 #define CURRENT_CHARGING  300    /* charging current */