diff --git a/src/FlightDisplay/PreFlightBatteryCheck.qml b/src/FlightDisplay/PreFlightBatteryCheck.qml
index 9e1d86d2997d571cb7a82d42c2e1595754eba2fe..30736be6632d929187cbdc259c83fb21601585fc 100644
--- a/src/FlightDisplay/PreFlightBatteryCheck.qml
+++ b/src/FlightDisplay/PreFlightBatteryCheck.qml
@@ -25,6 +25,7 @@ PreFlightCheckButton {
 
     property int    failurePercent:                 40
     property bool   allowFailurePercentOverride:    false
-    property var    _batPercentRemaining:           activeVehicle ? activeVehicle.battery.percentRemaining.value : 0
+    property var    _batteryValue:                  activeVehicle ? activeVehicle.battery.percentRemaining.value : 0
+    property var    _batPercentRemaining:           isNaN(_batteryValue) ? 0 : _batteryValue
     property bool   _batLow:                        _batPercentRemaining < failurePercent
 }