The truth about the CHRG LED

I'd like to understand the charge LED behaviour when a battery is connected. I've tried different batteries, from 500 mAh to 6600 mAh. Sometimes the LED turns on solid, sometimes it starts blinking sometimes it turns off.

I've read here:

This is what I understand so far:

Solid = charging

Blinking = fully charged? faulty battery? reached 4-hours charging limit? (in this case, when will it start charging again?)

Off = ??

Any help is greatly appreciated!

Thanks,

G.

This is from the PMIC data sheet. The LED operation is the opposite of what is shown here because of how it is connected:

Zbelding,

thank you.

So I update my humble understanding as follows:

Solid = charging

Off = Charged or sleep mode

Blinking = over-voltage, temperature or timer fault

I also found this topic:

that says:
"If the capacity of the battery you have connected to the MKR WiFi 1010 is greater than the charge current * safety timer timeout duration then the battery will never get a full charge and the safety timer fault will be expected (you could consider it an indicator that the charge process has finished."

I guess my next questions are:

What's the maximum battery capacity a MKR can charge?

How/when does the charger get out of blink mode and starts a new charging cycle?

Thanks