Arduino Battery Project

      
      
        float refvolts = 5.0;
        int inputPin1 = A1;
        int inputPin2 = A2;

        void setup() {
          Serial.begin(9600);
        }

        void loop() {
          int val1 = analogRead(inputPin1);
          int val2 = analogRead(inputPin2);

          float volts1 = (val1/1023.0)*refvolts ;
          float volts2 = (val2/1023.0)*refvolts ;

          Serial.print("Volts1 = ");
          Serial.println(volts1);
          Serial.print("Volts2 = ");
          Serial.println(volts2);

          delay(1000);
        }

The diagram of this project: