improved low bat detection on other then 10s

Inc/config.h

@@ -12,7 +12,7 @@
 #define BAT_CALIB_REAL_VOLTAGE        42.0       // input voltage measured by multimeter  
 #define BAT_CALIB_ADC                 1667       // adc-value measured by mainboard (value nr 4 on UART debug output)
 
-#define BAT_NUMBER_OF_CELLS     12        // normal Hoverboard battery: 10s
+#define BAT_NUMBER_OF_CELLS     10        // normal Hoverboard battery: 10s
 #define BAT_LOW_LVL1            3.6       // gently beeps at this voltage level. [V/cell]
 #define BAT_LOW_LVL2            3.5       // your battery is almost empty. Charge now!  [V/cell]
 #define BAT_LOW_DEAD            3.37      // undervoltage lockout.  [V/cell]

Src/bldc.c

@@ -131,7 +131,7 @@ int offsetrr2   = 2000;
 int offsetdcl   = 2000;
 int offsetdcr   = 2000;
 
-float batteryVoltage = 40.0;
+float batteryVoltage = BAT_NUMBER_OF_CELLS * 4.0;
 
 int curl = 0;
 // int errorl = 0;