diff --git a/Solar_UAV_Optimization/Vehicles.py b/Solar_UAV_Optimization/Vehicles.py
index 10e3412..6f5aa6e 100644
--- a/Solar_UAV_Optimization/Vehicles.py
+++ b/Solar_UAV_Optimization/Vehicles.py
@@ -201,7 +201,6 @@ def base_setup():
     bat.mass_properties.mass = 5.0  * Units.kg
     bat.specific_energy      = 250. *Units.Wh/Units.kg
     bat.resistance           = 0.003
-    bat.iters                = 0
     initialize_from_mass(bat,bat.mass_properties.mass)
     net.battery              = bat
 
diff --git a/tut_solar_uav.py b/tut_solar_uav.py
index 230bdeb..e788214 100644
--- a/tut_solar_uav.py
+++ b/tut_solar_uav.py
@@ -82,9 +82,9 @@ def vehicle_setup():
     #   Vehicle-level Properties
     # ------------------------------------------------------------------    
     # mass properties
-    vehicle.mass_properties.takeoff         = 200. * Units.kg
-    vehicle.mass_properties.operating_empty = 200. * Units.kg
-    vehicle.mass_properties.max_takeoff     = 200. * Units.kg 
+    vehicle.mass_properties.takeoff         = 250. * Units.kg
+    vehicle.mass_properties.operating_empty = 250. * Units.kg
+    vehicle.mass_properties.max_takeoff     = 250. * Units.kg 
     
     # basic parameters
     vehicle.reference_area                    = 80.       
@@ -112,7 +112,6 @@ def vehicle_setup():
     wing.chords.mean_aerodynamic = wing.areas.reference/wing.spans.projected
     wing.chords.root             = wing.areas.reference/wing.spans.projected
     wing.chords.tip              = wing.areas.reference/wing.spans.projected
-    wing.span_efficiency         = 0.98 
     wing.twists.root             = 0.0 * Units.degrees
     wing.twists.tip              = 0.0 * Units.degrees
     wing.highlift                = False  
@@ -263,8 +262,8 @@ def vehicle_setup():
 
     # Component 8 the Battery
     bat = SUAVE.Components.Energy.Storages.Batteries.Constant_Mass.Lithium_Ion()
-    bat.mass_properties.mass = 55.0 * Units.kg
-    bat.specific_energy      = 450. * Units.Wh/Units.kg
+    bat.mass_properties.mass = 90.0 * Units.kg
+    bat.specific_energy      = 600. * Units.Wh/Units.kg
     bat.resistance           = 0.05
     bat.max_voltage          = 45.0
     initialize_from_mass(bat,bat.mass_properties.mass)