diff --git a/ArduCopter/Parameters.cpp b/ArduCopter/Parameters.cpp
index a83f663534..e60219bba8 100644
--- a/ArduCopter/Parameters.cpp
+++ b/ArduCopter/Parameters.cpp
@@ -1043,9 +1043,9 @@ const AP_Param::ConversionInfo conversion_table[] = {
     { Parameters::k_param_serial2_baud,       0,      AP_PARAM_INT16, "SERIAL2_BAUD" },
     { Parameters::k_param_arming_check_old,   0,      AP_PARAM_INT8,  "ARMING_CHECK" },
     // battery
-    { Parameters::k_param_fs_batt_voltage,    0,      AP_PARAM_INT8,  "BATT_FS_LOW_VOLT" },
-    { Parameters::k_param_fs_batt_mah,        0,      AP_PARAM_INT8,  "BATT_FS_LOW_MAH" },
-    { Parameters::k_param_failsafe_battery_enabled,0, AP_PARAM_INT8,  "BATT_FS_LOW_ACT" },
+    { Parameters::k_param_fs_batt_voltage,    0,      AP_PARAM_FLOAT,  "BATT_LOW_VOLT" },
+    { Parameters::k_param_fs_batt_mah,        0,      AP_PARAM_FLOAT,  "BATT_LOW_MAH" },
+    { Parameters::k_param_failsafe_battery_enabled,0, AP_PARAM_INT8,   "BATT_FS_LOW_ACT" },
 };
 
 void Copter::load_parameters(void)