M include/mgba-util/gui.h → include/mgba-util/gui.h

@@ -47,7 +47,8 @@ BATTERY_HALF = 2,
 	BATTERY_HIGH = 3,
 	BATTERY_FULL = 4,
 
-	BATTERY_CHARGING = 8
+	BATTERY_CHARGING = 8,
+	BATTERY_NOT_PRESENT = 16
 };
 
 struct GUIBackground {

M src/platform/switch/main.c → src/platform/switch/main.c

@@ -360,6 +360,8 @@ u32 charge;
 	int state = 0;
 	if (R_SUCCEEDED(psmGetBatteryChargePercentage(&charge))) {
 		state = (charge + 12) / 25;
+	} else {
+		return BATTERY_NOT_PRESENT;
 	}
 	ChargerType type;
 	if (R_SUCCEEDED(psmGetChargerType(&type)) && type) {

M src/util/gui/menu.c → src/util/gui/menu.c

@@ -260,6 +260,9 @@ if (!params->batteryState) {
 		return;
 	}
 	int state = params->batteryState();
+	if (state == BATTERY_NOT_PRESENT) {
+		return;
+	}
 	uint32_t color = 0xFF000000;
 	if (state == (BATTERY_CHARGING | BATTERY_FULL)) {
 		color |= 0xFFC060;