FuelGauge
getVCell()
FuelGauge::getVCell, getVCell, FuelGauge.getVCell
// PROTOTYPE
float getVCell();
// EXAMPLE
FuelGauge fuel;
Log.info( "voltage=%.2f", fuel.getVCell() );
Returns the battery voltage as a float
. Returns -1.0 if the fuel gauge cannot be read.