diff --git a/src/app/SAB.cpp b/src/app/SAB.cpp
index 9975bba..779ac3b 100644
--- a/src/app/SAB.cpp
+++ b/src/app/SAB.cpp
@@ -107,9 +107,9 @@ SDCardConfig SAB::getSdCardConfig() const
 
 PowerInfo SAB::getPowerInfo(const unsigned char nbOfMeasures) const
 {
-  uint16_t batteryMeasures = 0, temp = 0;
-  unsigned char i = 0;
-  int checkLevel = 0;
+  uint16_t batteryMeasures(0), temp(0);
+  unsigned char i(0);
+  int checkLevel(0);
   PowerInfo p;
 
   for(;i < nbOfMeasures;i++)
@@ -128,7 +128,7 @@ PowerInfo SAB::getPowerInfo(const unsigned char nbOfMeasures) const
   else 
   {
     p.powerType = BATTERY; 
-    checkLevel = ((batteryMeasures-BATT_EMPTY)*100/BATT_DIFF);
+    checkLevel = ((double)(batteryMeasures-BATT_EMPTY)*100.0/(double)BATT_DIFF);
     
     if(checkLevel > 100)
       p.level = 100;