Charger led of MKR1310 is set on while charging

Official Hardware MKR Family MKR WAN 1310
1

Hello,
I've tested this example code

on two different MKR1310 boards.

I have this battery EEMB Batteria 3.7V 3500mAh 104567 Lipo Batteria ricaricabile agli ioni di litio con connettore JST-Fai una polarità sicura del dispositivo corrispondente con la batteria prima dell'acquisto !!! : Amazon.it: Moda.

3500 mAh 3.7V

I've also printed POWERON_CONFIG_REGISTER with
Serial.println(PMIC.readRegister(0x01),HEX);
which has a value of 0x1B, so CHG_CONFIG = 1 which means charger enabled
and

byte sysreg = PMIC.readSystemStatusRegister();
Serial.println(sysreg, HEX);

which is equal to 0x2B, so , CHRG_STAT[5:4] = 10 (Fast Charging).

Anyway I see CHARGER led (D2) on, while from datasheet it should be off while charging.

I'm referring to this datasheet: TI BQ24195

Do you know which could be the issue ?

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