diff --git a/APMrover2/Parameters.h b/APMrover2/Parameters.h
index 2b06eaae56..ea753047ef 100644
--- a/APMrover2/Parameters.h
+++ b/APMrover2/Parameters.h
@@ -57,7 +57,7 @@ public:
         k_param_battery_monitoring = 140,
         k_param_volt_div_ratio,
         k_param_curr_amp_per_volt,
-        k_param_input_voltage,
+        k_param_input_voltage, // deprecated, can be deleted
         k_param_pack_capacity,
 
         //
@@ -165,7 +165,6 @@ public:
     AP_Int8	    battery_monitoring;	// 0=disabled, 3=voltage only, 4=voltage and current
     AP_Float    volt_div_ratio;
     AP_Float    curr_amp_per_volt;
-    AP_Float    input_voltage;
     AP_Int16    pack_capacity;		// Battery pack capacity less reserve    
 
     // navigation parameters
diff --git a/APMrover2/Parameters.pde b/APMrover2/Parameters.pde
index d5adf405ba..2e50966cb4 100644
--- a/APMrover2/Parameters.pde
+++ b/APMrover2/Parameters.pde
@@ -106,12 +106,6 @@ const AP_Param::Info var_info[] PROGMEM = {
     // @User: Advanced
 	GSCALAR(curr_amp_per_volt,      "AMP_PER_VOLT",     CURR_AMP_PER_VOLT),
 
-    // @Param: INPUT_VOLTS
-    // @DisplayName: Max internal voltage of the battery voltage and current sensing pins
-    // @Description: Used to convert the voltage read in on the voltage and current pins for battery monitoring.  Normally 5 meaning 5 volts.
-    // @User: Advanced
-	GSCALAR(input_voltage,          "INPUT_VOLTS",      INPUT_VOLTAGE),
-
     // @Param: BATT_CAPACITY
     // @DisplayName: Battery Capacity
     // @Description: Battery capacity in milliamp-hours (mAh)