Battery low discharge protection?

Hey guys!

Because the mkr zero has a voltage regulator on the battery input, does that make a low battery voltage protection circuit useless?

I am thinking the regulator will stop once the input voltage goes below 3.3V (input voltage spec is 3.3 to 5.5)

Any idea? Thanks!

No, it won't. When the input voltage drops below 3.3V, the output voltage will also drop below 3.3V. Eventually the output voltage will drop to the point where the Arduino will no longer function correctly. Even after that, it will continue to draw some current from the battery. So the battery protection is needed

you are absolutely right ! thank you PaulRB