--- a/src/linux/up-device-supply-battery.c	2022-12-26 15:54:48.887273250 -0500
+++ b/src/linux/up-device-supply-battery.c	2022-12-26 16:01:27.774169696 -0500
@@ -99,7 +99,7 @@
 	 * device */
 	if (!self->shown_invalid_voltage_warning) {
 		self->shown_invalid_voltage_warning = TRUE;
-		g_warning ("no valid voltage value found for device %s, assuming 10V",
+		g_debug ("no valid voltage value found for device %s, assuming 10V",
 			   g_udev_device_get_sysfs_path (native));
 	}
 	/* completely guess, to avoid getting zero values */