#include Battery battery(3000, 4200, A0); /** * 1 cell li-ion/li-poly battery wired to A0, continuous sensing, sigmoidal mapping function, cut off at 3000mV * https://github.com/rlogiacco/BatterySense#lesser-than-5v-with-voltage-booster **/ void setup() { Serial.begin(9600); while (!Serial); battery.begin(5000, 1.0, &sigmoidal); } void loop() { digitalWrite(13, HIGH); delay(500); digitalWrite(13, LOW); delay(500); Serial.print("Battery voltage is "); Serial.print(battery.voltage()); Serial.print("mV ("); Serial.print(battery.level()); Serial.println("%)"); }