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Incorrect Battery Percentage Reading on MKR 1010 with 3.7V Lithium Battery

Hi
I am using the following code to monitor a 3.7V 800MAH lithium battery to power my MKR 1010, and I have all the required library. However, this code always shows the battery percentage as 100, do you have any idea how to solve?
“#include “Battery.h”

Battery battery(2750, 4200, ADC_BATTERY);

void setup() {
Serial.begin(9600);
while (!Serial);
analogReference(AR_EXTERNAL);
analogReadResolution(10);
battery.begin(3300, 1.47);
}

void loop() {
Serial.print(“Battery voltage is “);
Serial.print(battery.voltage());
Serial.print(” (“);
Serial.print(battery.level());
Serial.println(“%)”);
delay(1000);
}“

  1. Nayel#0000

    Hi Aymen can you add this to your code is for debugging purpose ; void loop() {
    int rawADC = analogRead(ADC_BATTERY);
    Serial.print(“Raw ADC value: “);
    Serial.println(rawADC);
    Serial.print(“Battery voltage is “);
    Serial.print(battery.voltage());
    Serial.print(” (“);
    Serial.print(battery.level());
    Serial.println(“%)”);
    delay(1000);
    }

  2. aymen ammari#0000

    Could you please explain what difference it could make?

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