diff --git a/mk/PX4/ROMFS/defaults.parm b/mk/PX4/ROMFS/defaults.parm
index b7a8ee81a4..82aef0d06f 100644
--- a/mk/PX4/ROMFS/defaults.parm
+++ b/mk/PX4/ROMFS/defaults.parm
@@ -50,7 +50,7 @@ FLTMODE5, 5.000000
 FLTMODE6, 5.000000
 FS_BATT_CURR_RTL, 0.000000
 FS_BATT_ENABLE, 2.000000
-FS_BATT_MAH, 520.000000
+FS_BATT_MAH, 1040.000000
 FS_BATT_VOLTAGE, 14.000000
 FS_EKF_ACTION, 2.000000
 FS_GCS_ENABLE, 0.000000